WO2005112171A1

WO2005112171A1 - Fuel storage/supply system for fuel cell

Info

Publication number: WO2005112171A1
Application number: PCT/JP2005/008599
Authority: WO
Inventors: Minoru Yagi
Original assignee: Kurita Water Industries Ltd.
Priority date: 2004-05-14
Filing date: 2005-05-11
Publication date: 2005-11-24

Abstract

Disclosed is a fuel storage/supply system which is excellent in storage/transport/discharge efficiency of a fuel. A fuel molecular compound (2) in a fuel storage tank (1) is heated by a heating unit (3) so that a fuel is discharged from the fuel molecular compound (2), and the thus-discharged fuel is taken out from a discharge line (1b). After being taken out, the fuel is introduced into the fuel storage tank (1) through a introduction line (1a) so that the fuel is brought into contact with the host compound remaining in the fuel storage tank (1), thereby forming a fuel molecular compound again. Consequently, there are repeated formation of the fuel molecular compound and discharge of the fuel from the fuel molecular compound.

Description

Specification

Fuel storage and supply equipment for fuel cells

Field of the invention

The present invention relates to a fuel storage / supply device that stores fuel as a molecular compound and releases the stored fuel as fuel for a fuel cell. The present invention relates to a fuel cell power generation system. Background of the Invention

[0002] A solid polymer electrolyte fuel cell has a solid electrolyte membrane such as a perfluorosulfonic acid membrane. A fuel electrode and an oxidizer electrode are joined to both surfaces of this film. Hydrogen and methanol are supplied to the anode, and oxygen is supplied to the power source, and power is generated by an electrochemical reaction. When methanol is supplied, the electrochemical reaction that occurs at the anode is expressed by the following equation [1].

CH OH + H 0 → 6H + + CO + 6e "'· · [1]

3 2 2

The reaction of the force sword is expressed by the following equation [2].

3/20 + 6H ⁺ + 6e "→ 3H O---[2]

twenty two

In order to cause this reaction, the anode and the force sword are composed of a mixture of carbon fine particles carrying a catalytic substance and a solid polymer electrolyte.

[0003] In a solid polymer electrolyte fuel cell, methanol supplied to the anode passes through pores in the electrode and reaches a catalyst, where the methanol is decomposed by the catalyst and the reaction formula [1] The reaction produces electrons and hydrogen ions. The hydrogen ions reach the power source through the electrolyte in the anode and the solid electrolyte membrane between the two electrodes, and react with oxygen supplied to the power source and electrons flowing from an external circuit, as shown in the above reaction equation [2]. Water is formed. The electrons emitted from methanol are led to the external circuit through the catalyst carrier in the anode, and flow into the force sword from the external circuit.

[0004] Hydrogen ions generated at the anode move toward the force sword along with water molecules in the electrolyte membrane. At this time, both the methanol and the anode force move to the force sword. This phenomenon is called methanol crossover and causes the output voltage drop when using methanol as fuel. Methanol crossover is more pronounced as the methanol concentration in the fuel increases. Therefore, it was difficult to use a high-concentration methanol fuel for a direct methanol fuel cell.

[0005] Japanese Patent Application Laid-Open Nos. 11-26005 and 2002-83612 describe that an electrolyte membrane between an anode and a force sword and its structure are improved to solve the methanol crossover. . JP 2001-93541 A describes that a liquid fuel is vaporized using a vaporizer or a heater and supplied to an anode.

Summary of the Invention

[0006] An object of the present invention is to provide an apparatus in which fuel of a fuel cell is stored as a molecular compound, and the fuel is released from the molecular compound.

[0007] The fuel storage / supply device of the first aspect has a fuel tank for incorporating a fuel molecular compound, and heating means for heating the fuel molecular compound in the fuel tank.

[0008] The first aspect of the fuel storage 'supply device stores the fuel as a molecular compound, so that the fuel can be easily stored and transported. The fuel molecular compound can be easily obtained only by contacting or recrystallizing the fuel with a compound that forms a molecular compound with the fuel (hereinafter sometimes referred to as “component compound”). Heating the fuel molecule releases the fuel.

[0009] The fuel cell power generation system according to the second aspect includes a fuel storage tank containing an organic fuel molecular compound, a concentration adjusting means for adjusting the concentration of the fuel introduced from the fuel storage tank, and a concentration adjustment from the concentration adjustment tank. And a fuel cell into which used fuel is introduced.

[0010] In the fuel cell power generation system according to the second aspect, the fuel concentration is adjusted and then supplied to the fuel cell, so that the output of the fuel cell is stabilized. In addition, even with fuel ethanol, it does not damage the electrodes of the fuel cell or corrode metal materials.

Brief Description of Drawings

FIG. 1 is a system diagram of a fuel storage / supply device according to a first embodiment.

FIG. 2 is a system diagram of a fuel storage / supply device according to a second embodiment.

FIG. 3 is a system diagram of a fuel storage / supply device according to a third embodiment.

FIG. 4 is a system diagram of a fuel storage / supply device according to a fourth embodiment.

FIG. 5 is a system diagram of a fuel storage and supply device according to a fifth embodiment. FIG. 6 is a system diagram of a fuel storage / supply device according to a sixth embodiment.

FIG. 7 is a system diagram of a fuel cell system according to an embodiment.

FIG. 8 is a system diagram of a fuel cell system according to another embodiment.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

[0012] The fuel storage and supply device outside the first space may include a stirring means for stirring the fuel molecular compound in the storage tank! By heating the fuel molecular compound with the heating means while stirring the fuel molecular compound with the stirring means, the fuel can be released more efficiently. By bringing the fuel into contact with the agitated conjugate after releasing the fuel, a fuel molecular compound is efficiently produced.

[0013] The fuel storage and supply device according to the first aspect may further include a cooling means for cooling the fuel molecular compound in the storage tank. After the fuel is released from the fuel molecular compound by heating by the heating means, the fuel is cooled by the cooling means, so that the release of the fuel by the fuel molecular compound can be stopped immediately.

As the fuel molecular compound, a fuel inclusion compound in which the fuel is included by a contact reaction or recrystallization between the host conjugate and the fuel is preferable.

[0015] The fuel storage and supply device of the present invention has the following effects.

(0 The fuel can be stored relatively easily and lightly at normal temperature and pressure.

GO Fuels stored as molecular compounds can be released and supplied by heating at relatively low temperatures;

(iii) Many fuels are specified as dangerous goods or deleterious substances, but by using fuel molecular compounds, these can be avoided and a highly safe fuel storage and supply system can be provided;

(iv) The compound such as the host compound after the release of the fuel (the above-mentioned “component compound”) can be re-used by reacting with the fuel to obtain the fuel molecular compound again. The device of the present invention can be used for various types of fuel cells such as a solid polymer type, a direct methanol type, and other types of organic fuels, particularly a mobile phone and a mopile type. It is extremely useful as a fuel storage and supply device for portable small fuel cells for computers and fuel cells for vehicles.

[0016] Hereinafter, an embodiment of a fuel storage 'supply device of the first aspect will be described in detail with reference to the drawings. Will be described. 1 to 6 are system diagrams each showing an embodiment of the fuel storage / supply device of the first aspect.

In the fuel storage / supply device of FIG. 1, the fuel storage tank 1 contains a fuel molecular compound 2. The fuel storage tank 1 has a fuel inlet and a fuel outlet, and is connected to a fuel introduction line la and a discharge line lb, respectively. The fuel storage tank 1 is provided with a heater 3 for heating the fuel molecular compound 2.

[0018] By heating the fuel molecule compound 2 in the fuel storage tank 1 with the heater 3, the fuel is released from the fuel molecule compound 2 and taken out from the discharge line lb. After the release of the fuel, the fuel is introduced from the introduction line la and brought into contact with the hostile conjugate remaining in the fuel storage tank 1 to form a fuel molecular compound again. The formation of the fuel molecular compound and the release of the fuel from the fuel molecular compound can be repeatedly performed. The introduction line la and the drain line lb may be combined into one, and fuel introduction and discharge may be performed in one line.

[0019] The fuel storage tank 1 is composed of a container capable of storing a fuel molecular compound. Since the container is heated when the fuel is released from the fuel molecular compound, the container is preferably made of a material that can withstand heating up to 100 ° C, preferably up to 200 ° C. In order to improve the thermal efficiency, the container may be provided with a heat insulating material or the like. Containers that store fuel under normal pressure conditions are lighter than pressure-resistant containers.

[0020] The heater 3 may be an electric heater such as an electric heater or a Peltier element, in addition to a hot water heater or an oil heater through which a heating medium such as hot water or oil flows.

The heat generated from the fuel cell may be absorbed by a heat medium such as water and circulated through the heater 3. Thereby, energy can be used efficiently.

[0022] The fuel storage and supply device shown in Fig. 2 is provided with control valves V and V on a fuel introduction line la and a discharge line lb, respectively, and controls the opening and closing or opening of the valves V and V to introduce or discharge fuel.

a b a b

Alternatively, the flow rate can be controlled. Other configurations of the apparatus in FIG. 2 are the same as those in FIG.

The control valves V 1 and V 2 may be pressure-resistant valves.

a b

The fuel storage / supply device shown in FIG. 3 has a cooler 4 for cooling the fuel molecular compound 2 in the fuel storage tank 1. After heating the fuel molecular compound 2, it is cooled by the cooler 4 to release the fuel. Exit can be stopped immediately. Other configurations in FIG. 3 are the same as those in FIG.

[0025] The cooler 4 may be a coiled pipe for heat exchange through which a cooling medium such as cooling water flows, but is not limited thereto.

The fuel storage / supply device shown in FIG. 4 has a stirrer 5 for stirring the fuel molecule compound 2 in the fuel storage tank 1 and a fuel circulation line 6 provided with a pump P. Other configurations of the apparatus in FIG. 4 are the same as those in FIG.

[0027] When the fuel molecular compound 2 and the host compound after releasing the fuel are powder, stirring the fuel molecular compound by the stirrer 5 improves the fuel release efficiency, and increases the fuel and host compound. The contact efficiency with the contact is also improved.

[0028] The stirrer may be a stirrer provided with stirring blades!

[0029] Fuel is introduced into the fuel storage tank 1 from the introduction line, and the fuel discharged from the discharge line lb is circulated to the introduction port side by the circulation line 6 by the pump P, thereby recovering the fuel. The efficiency and the formation efficiency of fuel molecular compounds are improved.

[0030] As shown in FIG. 5, a plurality of fuel storage tanks each containing a fuel molecular compound 2 and including a heater 3, and further a cooler 4 and a Z or a stirrer 5 (three fuel storage tanks in FIG. 5) 1A, IB, 1C) They may be connected and connected in series. In FIG. 5, V, V, V, V

a bed is an on-off valve. A plurality of fuel storage tanks 1A, IB, 1C may be arranged in parallel as shown in FIG. As shown in Fig. 6, multiple fuel storage tanks are arranged in parallel and connected by multi-way valves V and V such as four-way valves.

A B

By switching between the fuel storage tank that discharges fuel and the fuel storage tank that stores fuel, it is possible to continuously supply fuel to the equipment and to continuously remove fuel from the equipment. .

[0031] The fuel storage 'supply device shown in Figs. 1 to 6 is an example of an embodiment of the fuel storage' supply device of the present invention, and does not limit the present invention at all. For example, a stirrer and Z or a circulation line may be further provided in the fuel storage and supply device of FIG.

[0032] The fuel storage / supply device further includes a shelf for holding the fuel molecular compound or the compound in the fuel storage tank in order to more efficiently release and store the fuel. May be established. A vibration mechanism or the like for dispersing and supplying the fuel into the fuel storage tank may be provided. Next, the fuel molecular compound used in the present invention will be described.

[0034] The fuel molecular compound is composed of two or more kinds of compounds that can exist stably alone, and these compounds are other than covalent bonds represented by hydrogen bond, van der Waals force, and the like. They are linked by relatively weak interactions. The molecular compound may be a hydrate, a solvate, an addition compound, an inclusion compound, or the like. The fuel molecular compound is preferably a compound that can be formed by a contact reaction between a fuel and a component compound such as a host compound that forms the fuel molecular compound. Fuel molecular compounds are relatively lightweight, can store fuel at near normal temperature and pressure, and release fuel by simple heating

[0035] The fuel molecular compound is preferably a fuel inclusion compound in which the fuel is included by host molecules.

[0036] The host conjugate may be a monomolecular host compound, a multi-molecular host compound, a polymer host compound, an inorganic compound or an inorganic compound or an organic / inorganic composite conjugate. Any of a system host compound and an organic / inorganic composite host compound may be used.

[0037] The monomolecular host compound includes cyclodextrins, crown ethers, cryptands, cyclophanes, azacyclophanes, calixarenes, cyclotriveratrylenes, sphereland, cyclic oligopeptides, and the like. Well.

[0038] The multimolecular hosty conjugates include ureas, thioureas, deoxycholates, perhydrotriphenylenes, tri-o-thymotides, bianthrils, spirobifluorenes, cyclophosphazenes, monoalcohols , Diols, acetylene alcohols, hydroxy benzophenones, phenols, bisphenols, trisphenols, tetrakisphenols, polyphenols, naphthols, bisnaphthols, diphenylmethanols, carboxylic amides, Thioamides, bixanthenes, carboxylic acids, imidazoles, hydroquinones and the like may be used.

[0039] The high molecular weight hosty conjugate is a polyethylene glycol arm having a core of celluloses, starches, chitins, chitosans, polyvinyl alcohols, and 1,1,2,2-tetrakisphenol. Polymers such as polyethylene glycol arm-type polymers having _a , _a , _a , _a , and _a tetrakisphenylenyl xylene as a core. [0040] Inorganic hostoy dating products include titanium oxide, graphite, alumina, transition metal dicargogenite, lanthanum fluoride, clay minerals (such as montmorillonite), silver salts, silicates, phosphates, zeolites, and silica. And porous glass.

[0041] The organic'inorganic composite host compound may be a calixarene tungsten oxide cluster or the like.

[0042] The molecular compound is an organic phosphorus compound, an organic silicon compound, an organic aluminum compound, an organic titanium compound, an organic boron compound, an organic zinc compound, an organic indium compound, an organic gallium compound, an organic tellurium compound, an organic tin compound. It may be a dagger, an organic zirconium compound, an organic magnesium compound, or the like. The molecular compound may be a metal salt of an organic carboxylic acid—an organometallic complex.

As the hostile conjugate, a multi-molecular hostile conjugate whose inclusion ability is hardly influenced by the size of the molecule of the guest conjugate is suitable.

[0044] Specific examples of the multimolecular hostile conjugate include urea, 1,1,6,6-tetraphenylhexa-2,4diyne-1,6 diol, 1,1-bis (2, 4 dimethylphenyl) — 2-propyne 1ol, 1,1,4,4-tetraphenyl-2-butyne 1,4-diol, 1,1,6,6-tetrakis (2,4 dimethinolepheninole) 2,4 1,6-diol, 9,10 diphenyl 9,10 dihydroanthracene 9,10 diol, 9,10 bis (4-methylphenyl) -1,9,10 dihydroanthracene 1,10 diol, 1, 1,2,2-tetraphenylethane 1,2 diol, 4-methoxyphenol, 2,4 dihydroxybenzophenone, 4,4'dihydroxybenzophenone, 2,2'dihydroxybenzophenone, 2, 2 ', 4,4'-tetrahydroxybenzophenone, 1,1-bis (4hydroxyphenyl Cyclohexane, 4,4,1-sulfol-bisphenol, 2,2,1-methylenebis (4-methynole-1-6-t-butynolephenole), 4,4,1-ethylidenebisphenol, 4 , 4, -Thiobis (3-methyl-6-t-butylphenol), 1,1,3 Tris (2-methyl-4-hydroxy-1-5-t-butylphenyl) butane, 1,1,2,2-tetrakis (4-hydroxyphenyl) ethane, 1,1,2,2-tetrakis (4-hydroxyphenyl) ethylene, 1,1,2,2-tetrakis (3-methyl-4-hydroxyphenyl) ethane, 1, 1, 2, 2-tetrakis (3-fluoro-1-hydroxyphenyl) ethane, a, a, α ', α, 1-tetrakis (4-hydro Xylene, p-xylene, tetrakis (p-methoxyphenyl) ethylene, 3,6,3 ', 6, tetramethoxy-9,9'B 9H-xanthene, 3,6,3', 6'- Tetraacetoxy 9,9,1B 9H-xanthene, 3,6,3 ', 6-tetrahydroxy 9,9,1B 9H—Xanthene, gallic acid, methyl gallate, catechin, bis β-naphthol, α , α, α ', α, 1-tetraphenyl-1,1,1'-biphenyl-1,2,1-dimethanol, bisdicyclohexylamide diphenate, bisdicyclohexylamide fumarate, cholic acid, dexcholate, 1,1,2,2-Tetraphenyl-ethane, tetrakis (rhodophenyl) ethylene, 9,9,1-Bianthril, 1,1,2,2-tetrakis (4-carboxyphenyl) ethane, 1,1 , 2, 2-tetrakis (3 carboxyphenyl) ethane, ace Tylenedicarboxylic acid, 2,4,5 Trifuy-imidazole, 1,2,4,5-Tetraphenyl-imidazole, 2-phenylenantole [9, 10 d] Imidazole, 2- (ο cyanophyl) phenanthantine [9,10—d] imidazole, 2— (m—cyanophen) phenanthrole [9,10—d] imidazole, 2— (pcyanophene) phenanthrole [9,10 d] imidazole, hydroquinone, 2 — T-butylhydroquinone, 2,5 di-t-butylhydroquinone, 2,5 bis (2,4 dimethylphenyl) hydroquinone, and the like.

[0045] As the host compound, among the above-mentioned compounds, 1,1-bis (4-hydroxyphenyl) cyclohexane, 1,1,2,2-tetrakis (4-hydroxyphenyl) ethane, 1,1 A phenolic host compound such as 2,2,2-tetrakis (4-hydroxyphenyl) ethylene is advantageous in terms of economy and inclusion ability.

[0046] One of these hostile conjugates may be used alone, or two or more may be used in combination.

[0047] The host compound may be in the form of solid, powder, granule, or lump, and may be crystalline, amorphous (amorphous), or misaligned. When the host compound is a powdery solid, its particle size is preferably about lmm or less.

[0048] The hostile conjugate may be supported on a porous substance. Examples of the porous material include silica, zeolites, activated carbons, as well as intercalation compounds such as clay minerals and montmorillonite, but are not limited thereto. The host compound is dissolved in the solvent, the solution is impregnated in the porous material, and the solvent is dried and dried under reduced pressure, whereby the host compound is supported on the porous material. Amount of organic compound supported on porous material Is preferably about 10 to 80% by weight based on the porous material.

[0049] It is known that 1,1 bis (4-hydroxyphenyl) cyclohexane incorporates various guest molecules to form a crystalline inclusion conjugate. It is also known that an inclusion compound is formed by a direct contact reaction with a guest compound (which may be in any state of solid, liquid and gas).

[0050] Examples of the fuel include, but are not limited to, alcohols, ethers, hydrocarbons, and acetal. As the fuel, those which are generally liquid at normal temperature and normal pressure are preferable. Specifically, alcohols such as methanol, ethanol, n-propanol, isopropanol, and ethylene glycol, dimethyl ether, and methyl ethyl Ethers such as ether and getyl ether; hydrocarbons such as propane and butane; and acetals such as dimethoxymethane and trimethoxymethane. These may be used alone or two or more. You may mix and use.

Example 1

50 g of a methanol clathrate prepared by enclosing 1 mol of methanol in 1 mol of 1,1 bis (4-hydroxyphenyl) cyclohexane is placed in the fuel storage tank shown in FIG. When the contact compound was heated to 60 to LOO ° C with stirring, methanol could be released. Thereafter, when the temperature was cooled to 20 ° C., the release of methanol, which was a physical property of methanol inclusion, was stopped.

Hereinafter, an embodiment of the fuel cell power generation system according to the second aspect will be described in detail with reference to the drawings. 7 and 8 are system diagrams each showing an embodiment of the fuel cell power generation system of the present invention.

The fuel cell power generation system of FIG. 7 includes a fuel storage tank 1, a water tank 12, a concentration adjustment tank 13 into which fuel and water are introduced from the fuel storage tank 1 and the water tank 12, and a concentration adjustment tank 13 from the concentration adjustment tank 13. And a fuel cell 14 to which supplied fuel is supplied.

[0054] The fuel storage tank 1 stores a solid clathrate formed by clathrating the fuel with the host. This clathrate conjugate has the property of releasing fuel when heated. In the present embodiment, a heater 3 is provided to heat the clathrate conjugate. In this embodiment, the heater 3 is an electric heating element such as an electric heater or a Peltier element. In fuel tank 1 The fuel from which the physical properties of the inclusion are also released is sent to the concentration adjusting tank 13 via the flow control valve 16 and the pipe 17.

[0055] The configuration of the fuel storage tank 1 is described in detail in the first aspect. This fuel storage tank 1 may be of a replaceable cartridge type.

The water in the water tank 12 is sent to the concentration adjusting tank 13 via the flow control valve 18 and the pipe 19 by a pump, gravity or the like.

[0057] In the concentration adjusting tank 13, a turbulence member such as a mesh and a mixing means such as a stirrer are provided. The concentration adjusting tank 13 is provided with a concentration sensor 20 such as a methanol sensor for measuring the concentration of a mixture of water and fuel. The detection signal of the density sensor 20 is input to the controller 21. The controller 21 controls the energization of the heating element 3 and controls the opening of the flow control valves 16 and 18. The concentration adjusting tank 13 may be directly connected to the fuel cell 14 via a pipe 22. A flow control valve is provided in the pipe 22.

[0058] In the fuel cell system configured as described above, by energizing the heating element 3 to heat the clathrate compound, fuel is released from the clathrate compound. After this fuel and water from the water tank 12 are mixed to a predetermined concentration in the concentration adjusting tank 13, they are supplied to the fuel cell 14 to generate power. The controller 21 controls the energization of the heating element 3 and the opening control of the flow control valves 16 and 18 so that the fuel concentration detected by the concentration sensor 20 becomes a predetermined concentration.

[0059] In this manner, fuel of a predetermined concentration is supplied to the fuel cell 14, so that the output of the fuel cell 14 is stabilized. In addition, even if the fuel is ethanol, it will not damage the electrodes of the fuel cell or corrode metal materials.

In FIG. 7, the power of heating the clathrate conjugate by the heating element 3 may be used to heat the clathrate conjugate using the exhaust heat of the fuel cell 14 as shown in FIG. Yeah.

In FIG. 8, a heat transfer tube 32 is installed in the fuel storage tank 1 together with the heating element 3, and hot waste water (for example, condensed water) generated in the fuel cell 14 is connected to the heat transfer tube via pipes 23 and 24. It is configured to allow water to flow through tube 32. The pipe 23 is provided with a flow control valve 25. The opening of the flow control valve 25 is also controlled by the controller 21. The hot waste water discharged by the heat transfer tube 32 returns to the fuel cell 14 via the pipe 24. [0062] Other configurations in Fig. 8 are the same as those in Fig. 7, and the same reference numerals indicate the same parts.

In FIG. 8, the heat transfer tube 32 and the heating element 3 are provided side by side, but only the heat transfer tube 32 may be provided. However, in order to heat the clathrate when the fuel cell 14 is started or when the amount of heat radiated from the heat transfer tube 32 is insufficient, it is preferable to additionally provide the heating element 3.

In FIGS. 7 and 8, fuel and water are mixed in the concentration adjusting tank 13, but a mixing means such as a line mixer may be provided instead of the concentration adjusting tank 13.

Claims

The scope of the claims

[1] In a fuel storage and supply device that stores a fuel molecular compound and supplies the fuel molecular compound to a fuel cell, a fuel storage tank for incorporating the fuel molecular compound and a fuel storage tank for discharging fuel from the fuel storage tank A fuel storage and supply device, comprising: heating means for heating a fuel molecular compound in a storage tank.

[2] The fuel storage and supply device according to [1], further comprising stirring means for stirring the fuel molecular compound in the fuel storage tank.

[3] The fuel storage and supply device according to claim 1, further comprising cooling means for cooling a fuel molecular compound in the fuel storage tank.

4. The fuel storage and supply device according to claim 1, wherein the fuel molecular compound is a fuel inclusion compound in which the fuel is included by a contact reaction between the host conjugate and the fuel.

[5] The fuel storage tank according to claim 4, wherein the host compound is at least one selected from the group consisting of an organic compound, an inorganic compound, and an organic-inorganic composite compound. Feeding device.

[6] In claim 5, the host compound is a group consisting of a monomolecular host compound, a polymolecular host compound, a polymer host compound, an inorganic host compound, and an organic / inorganic composite host compound. A fuel storage 'supply device, characterized in that it is at least one selected from.

[7] In claim 6, the monomolecular host compound is a cyclodextrin, a crown ether, a cryptand, a cyclophan, an azacyclophane, a calixarene, a cyclotriberatrilen, a sphenand, and a cyclic oligopeptide. A fuel storage and supply device, characterized in that it is at least one member of the class.

[8] In claim 6, the multimolecular hosty conjugate comprises ureas, thioureas, deoxycholates, perhydrotriphenylenes, tri-o-thymotides, bianthrils, spirobifluorenes, Cyclophosphazenes, monoalcohols, diols, acetylenic alcohols, hydroxybenzophenones, phenols, bisphenols, trisphenols, tetrakisphenols, polyphenols, naphthols, bisnaphthols A fuel comprising at least one of diphenylmethanols, carboxylic amides, thioamides, bixanthenes, carboxylic acids, imidazoles, and hydroquinones. Storage and supply equipment.

[9] In claim 6, the high molecular weight host conjugate has a core of celluloses, starches, chitins, chitosans, polyvinyl alcohols, 1,1,2,2-tetrakisphenylethane. A fuel storage / supply device comprising at least one of a polyethylene glycol arm type polymer and a polyethylene glycol arm type polymer having α, α, α ′, α, -tetrakisphenylxylene as a core.

[10] In claim 6, the inorganic ghost compound is titanium oxide, graphite, alumina, transition metal dicargogenite, lanthanum fluoride, clay mineral, silver salt, silicate, phosphate, zeolite. A fuel storage-supply device characterized by at least one of silica, silica, and porous glass.

[11] The fuel storage / supply apparatus according to claim 6, wherein the organic / inorganic composite host conjugate is a calixarene tungsten oxyride cluster.

[12] The fuel storage and supply device according to claim 5, wherein the host conjugate is a multi-molecular host conjugate.

[13] In claim 12, the multimolecular hosty conjugate comprises urea, 1,1,6,6-tetraphenylhexa-2,4diyne-1,6 diol, 1,1-bis (2, 4 dimethylphenyl) —2 propyne 1-ornole, 1,1,4,4-tetrapheninolae 2-butyne 1,4 diol, 1,1,6,6-tetrakis (2,4 dimethylphenyl) —2 , 4 Hexadiyne-1,6-diol, 9,10 diphenyl 9,10 Dihydroanthracene 9,10 diol, 9,10 Bis (4-methylphenyl) -1,9,10 Dihydroanthracene-1,9,10 diol, 1 , 1,2,2-tetraphenyl--1,2-diol, 4-methoxyphenol, 2,4-dihydroxybenzophenone, 4,4'-dihydroxybenzophenone, 2,2, dihydroxybenzophenone, 2,2 ', 4,4,1-tetrahydroxybenzophenone, 1,1-bis (4hydroxyfif -Le) cyclohexane, 4,4'-sulfol-bisphenol, 2,2'-methylenebis (4-methyl 6-t-butylphenol), 4,4'-ethylidenebisphenol, 4,4 , -Thoobis (3-methyl-6t-butylphenol), 1,1,3 Tris (2-methyl-4hydroxy-15-tbutylphenyl) butane, 1,1,2,2-tetrakis (4hydroxyphenyl) ethane , 1,1,2,2-tetrakis (4-hydroxyphenyl) ethylene, 1,1, 2, 2-tetrakis (3-methyl-4-hydroxyphenyl) ethane, 1,1,2,2-tetrakis (3-fluoro-1-hydroxyphenyl) ethane, a, a, α ', α, one-tetrakis (4-hydroxyphenyl) -p-xylene, tetrakis (ρ-methoxyphenyl) ethylene, 3,6,3,, 6'-tetramethoxy-9,9 'b 9Η-xanthene, 3,6,3' , 6'-tetraacetoxy 9,9,1B 9Η-xanthene, 3,6,3 ', 6-tetrahydroxy-9,9,1B 9-xanthene, gallic acid, methyl gallate, catechin, bis β-naphthol, ex , a, α ', α, 1-tetraphenyl-1,1,1-biphenyl-1,2,2-dimethanol, bisdicyclohexylamide diphenate, bisdicyclohexylamide fumarate, cholic acid, deoxycholic acid, 1 , 1, 2, 2-tetratetra-luetane, tetrakis (ρ Ethylene, 9, 9'-bianthril, 1,1,2,2-tetrakis (4-carboxyphenyl) ethane, 1,1,2,2-tetrakis (3 carboxyphenyl) ethane , Acetylenedicarboxylic acid, 2,4,5 triflu-imidazole, 1,2,4,5-tetraphenyl-imidazole, 2-phenyl-phenanthone [9, 10 d] imidazole, 2- (o cyanophyl) [9,10-d] imidazole, 2- (m-cyanophen) phenant [9,10-d] imidazole, 2- (p-cyanophenyl) phenant [9,10d] imidazole, hydroquinone A fuel storage / supply device comprising at least one of 2, 2-t-butylhydroquinone, 2,5 di-tert-butylhydroquinone and 2,5 bis (2,4 dimethylphenyl) hydroquinone.

[14] In claim 12, the host compound is selected from the group consisting of 1,1-bis (4-hydroxyphenyl) cyclohexane, 1,1,2,2-tetrakis (4-hydroxyphenyl) ethane, and 1,1,2 A fuel storage and supply device, characterized in that it is at least one of 2,4-tetrakis (4-hydroxyphenyl) ethylene.

[15] The fuel storage / supply device according to claim 5, wherein the host compound is in a solid state, a powder state, a granular state or a massive state.

[16] The fuel storage / supply device according to claim 5, wherein the host tie is in a powder form.

[17] The fuel storage and supply device according to claim 16, wherein the particle size of the host tie is 1 mm or less.

[18] In claim 1, the fuel molecular compound is an alcohol, an ether, a hydrocarbon, And a fuel storage and supply device characterized by being at least one of:

[19] The fuel molecular compound according to claim 18, wherein the fuel molecular compound is methanol, ethanol, n-propanol.

Fuel storage characterized by at least one of isopropyl alcohol, ethylene glycol, ethylene glycolone, dimethinooleate, methinoleetinoleate, getyl ether, propane, butane, dimethoxymethane, and trimethoxymethane. Feeding device.

[20] The fuel storage / supply device according to claim 5, wherein the host conjugate is supported on a porous substance.

21. The fuel storage and supply device according to claim 20, wherein the porous substance is at least one of silicas, zeolites, activated carbons, and clay minerals.

22. The fuel storage and supply device according to claim 20, wherein the amount of the organic compound carried on the porous substance is about 10 to 80% by weight based on the porous substance.

[23] The fuel storage according to claim 1, further comprising a fuel concentration adjusting means for receiving the fuel discharged from the fuel storage tank, adjusting the fuel concentration, and then supplying the fuel to the fuel cell. · Feeding equipment.

24. The fuel storage and supply device according to claim 23, wherein the fuel is methanol, and the fuel concentration adjusting means adjusts the concentration by adding water to the methanol.

[25] A fuel cell power generation system comprising: the fuel storage / supply device according to claim 1; and a fuel cell to which fuel is supplied from the fuel storage / supply device.

[26] A fuel storage tank capable of containing an organic fuel molecular compound, concentration adjusting means for adjusting the concentration of the fuel introduced from the fuel storage tank, and a fuel cell into which the fuel whose concentration has been adjusted is introduced from the concentration adjusting tank. A fuel cell power generation system comprising:

27. The fuel cell power generation system according to claim 26, wherein the fuel cell is a solid polymer electrolyte fuel cell or a direct methanol fuel cell.

[28] A fuel cell power generation system according to claim 26, wherein the fuel storage tank is the fuel storage tank according to claim 1.

29. The fuel cell power generation system according to claim 28, further comprising means for supplying exhaust heat of the fuel cell to the heating means of the fuel storage tank to release fuel from a fuel molecular compound.