CN105789552A - Zinc positive electrode for zinc/air battery - Google Patents
Zinc positive electrode for zinc/air battery Download PDFInfo
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- CN105789552A CN105789552A CN201410777145.2A CN201410777145A CN105789552A CN 105789552 A CN105789552 A CN 105789552A CN 201410777145 A CN201410777145 A CN 201410777145A CN 105789552 A CN105789552 A CN 105789552A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The invention discloses a zinc positive electrode for a zinc/air battery. The zinc positive electrode comprises a current collector, zinc paste electrodes and electrode reinforcement parts, wherein the zinc paste electrodes are attached onto the surfaces of the two sides of the sheet-shaped current collector, the electrode reinforcement parts are arranged inside the zinc paste electrodes and/or the electrode reinforcement parts wrap the zinc paste electrodes, so that an active substance is prevented from dropping, the mechanical strength of the zinc positive electrode is improved, meanwhile, the problems that the reaction product of the zinc positive electrode is seriously deformed and is difficult to be extracted from an inner cavity of a single battery are solved, the damage to the surface of a negative electrode due to deformation of the positive electrode and difficulty in extraction can be effectively relieved, the mechanical replacement time of the zinc positive electrode is shortened, and rapid charging of the zinc/air battery is achieved. With the zinc positive electrode disclosed by the invention, the porosity is controlled within a certain range, the polarization loss can be effectively reduced, and the high-power discharge capability is improved.
Description
Technical field
The invention belongs to electrochemistry association area, be specifically related to a kind of zinc/air cell zinc anode.
Background technology
Metal-air batteries is a kind of environmental protection clear energy sources.Zinc/air cell is the one in metal-air battery.Zinc/air cell has that specific capacity is big, energy density is high, transmission of electricity quality better, dry state storage time length, cheap, use the many merits such as safety, environmental friendliness.Zinc/air cell adopts air electrode as negative electrode, and zinc electrode is as anode, and electrolyte solution mostly is alkalescence KOH solution.Zinc anode is as the core component of zinc/air cell, and its discharge performance height directly affects the transmission of electricity quality of zinc/air cell.But, traditional zinc anode, its active substance is prone to come off from electrode surface, and the present invention adopts and strengthens parts or inner supporting structure reinforcing mode in electrode exterior cladding, improves the mechanical strength of zinc electrode；Solve the serious not easily extracting problem from the inner chamber of single pond of zinc anode product deformation simultaneously, can effectively alleviate and carry, because anode deforms hard-pumped, the destruction that cathode surface is caused, and shorten zinc anode machinery replacing construction.
Summary of the invention
Not enough for prior art, the present invention adopts scheme in detail below to realize:
A kind of zinc/air cell zinc anode, strengthens parts including collector, paste zinc electrode, electrode；Described paste zinc electrode is attached to described lamellar collector both side surface；Described electrode strengthens parts and is placed in the internal and/or described electrode of paste zinc electrode and strengthens parts and be coated on outside paste zinc electrode, comes off reducing active substance in zinc anode, improves the mechanical strength of zinc anode, strengthen its anti-vibration, anti shock and vibration ability.
When described electrode enhancing parts are placed in paste zinc electrode inside, it is plastic plate supporting construction that electrode strengthens parts.Increase its mechanical strength by internal for plastic supporting structure distributed anode, in the way of " grain ", zinc anode is fixed in electrode interior.Supporting construction resistance should be less, does not affect electrode discharge performance, through the zinc anode that the method is prepared from, through long-distance transport, can have shock resistance, anti-vibration ability.
When described electrode enhancing parts are coated on paste zinc electrode outside, it is the one in hydrocellulose membrane, asbestos film, polypropylene screen, tissue paper that electrode strengthens parts.Coated zinc anode, lowers on the one hand effectively active substance zinc powder and comes off problem, it is simple to transport with store, on the other hand, cladding material has good electrochemical stability in alkali liquor, and resistance is less does not affect high power discharge ability.
Described collector is stretch the one in wire netting, punch metal net, foam metal net, braided metal net.The surface density of described wire netting is 5-20mg/cm2.Dissimilar metals net chemical property under alkaline medium condition is different, side reaction degree is occurred to there are differences, therefore selecting to be even more important as the wire netting of collector, the wire netting surface density simultaneously selected should control within rational scope, to reduce polarization loss.
Described collector has extraction lug, and described lug lead-out mode is the one in one chip, double-disk or monoblock type.
Described paste zinc electrode includes zinc powder and binding agent；Described binding agent is one or more in Kynoar, acrylate copolymer, polyvinyl alcohol, sodium polyacrylate, sodium carboxymethyl cellulose；Described binding agent mass content in paste zinc electrode is 0.25%-5%.Binding agent is the important component part of paste zinc electrode, should have good adhesive property and electrochemical stability, can be bonded together by active substance zinc powder and form stable electrode structure.Binding agent kind and composition antianode product deformation extent, the impact of mechanical replaceable extracting complexity, replacing construction is bigger.Binder content preferably must be held in a rational scope, content is very few easily occur active substance come off, the problem such as electrode mechanical strength variation, too high levels makes ohmage become affects electrode discharge performance greatly.
Described paste zinc electrode also includes conductive agent, and described conductive agent mass content in paste zinc electrode is 0.1%-5%.
Described conductive agent is one or more in acetylene black, XC-72, BP, MWCNT, Graphene.
Described paste zinc electrode also includes KOH and/or NaOH；Described KOH and/or NaOH mass content in paste zinc electrode is 5%-40%.
Described zinc powder particle diameter is 0.5-600 μm；Described binding agent particles size distribution is 50-300 order.
Described zinc anode porosity is 35%-85%, controls within the scope of this by the porosity of zinc anode, there is enough spaces and stores electrolyte and reaction afterproduct, can form good electron propagation ducts simultaneously between active substance between active material particle.
Beneficial effect
The invention discloses a kind of zinc/air cell zinc anode.Described zinc anode includes collector, paste zinc electrode, electrode enhancing parts；
Described paste zinc electrode is attached to described lamellar collector both side surface；Described electrode enhancing parts are placed in the internal and/or described electrode enhancing parts of paste zinc electrode and are coated on outside paste zinc electrode, to reduce active substance and come off, to improve its mechanical strength, solve the serious not easily extracting problem from the inner chamber of single pond of zinc anode product deformation simultaneously, can effectively alleviate and carry, because anode deforms hard-pumped, the destruction that cathode surface is caused, and shorten zinc anode machinery replacing construction, it is achieved zinc/air cell group " quick charge ".
Porosity is controlled within the specific limits by this patent zinc anode, can effectively reduce polarization loss, improve high power discharge ability.
Accompanying drawing explanation
Fig. 1 zinc anode designs schematic diagram, wherein 1 collector, 2 is paste zinc electrode；
Fig. 2 electrode interior strengthens parts, and wherein 3 is inner support body, and 4 is supporter frame；
Fig. 3 current collector structure schematic diagram, wherein 5 is one chip lug；
Fig. 4 current collector structure schematic diagram, wherein 6,7 is double-disk lug；
Fig. 5 current collector structure schematic diagram, wherein 8 is monoblock type lug；
Fig. 6 electrode upper lead-out wire, wherein 9 is becket；
Fig. 7 is that the zinc anode for preparing of embodiment 1,2,3,4 discharge voltage in 7mol/LKOH solution is with change curve discharge time.
Detailed description of the invention
Embodiment 1:
After 250g zinc powder is mixed homogeneously with 2.52g acrylate copolymer, its mixture adds 100mL water, after stirring 10min when rotating speed is 1000r/min, is prepared into paste.Adopting scraper dedicated by mastic blade coating uniformly thin block paste zinc electrode, paste zinc electrode is dried 7h under 40 DEG C of conditions, dried paste zinc electrode is placed in copper mesh both sides and carries out pressing process, pressure is 20MPa, and pressing time is 3min, namely prepares into zinc anode.
In gained zinc anode, electrode strengthens parts is netted plastic framework, and frame size is 12 × 10cm2, 6 lattice of above-mentioned plastic frame average mark；Collector is for stretching copper mesh, and the surface density of described wire netting is 10mg/cm2；Copper mesh area is identical with frame size, and described paste zinc electrode is attached to copper mesh both side surface, and plastic supporting structure distributed anode is internal increases its mechanical strength, is fixed by zinc anode in the way of " grain " in electrode interior.Supporting construction resistance should be less, does not affect electrode discharge performance, through the zinc anode that the method is prepared from, through long-distance transport, can have shock resistance, anti-vibration ability.Described collector has extraction lug, and described lug lead-out mode is one chip.Described paste zinc electrode includes zinc powder and acrylate copolymer；Described acrylate copolymer mass content in paste zinc electrode is 1%.Binding agent acrylate copolymer is the important component part of paste zinc electrode, should have good adhesive property and electrochemical stability, can be bonded together by active substance zinc powder and form stable electrode structure.Binder content is very few easily occur active substance come off, the problem such as electrode mechanical strength variation, too high levels makes ohmage become affects electrode discharge performance greatly.Described zinc powder particle diameter is 1-500 μm；Described acrylate copolymer particles size 100 order.Gained zinc anode porosity is 60%, controls within the scope of this by the porosity of zinc anode, there is enough spaces and stores electrolyte and reaction afterproduct, can form good electron propagation ducts simultaneously between active substance between active material particle.
Embodiment 2:
After 250g zinc powder is mixed homogeneously with 2g sodium polyacrylate, its mixture adds 100mL water, after stirring 10min when rotating speed is 1000r/min, is prepared into paste.Adopt scraper dedicated by mastic blade coating uniformly thin block paste zinc electrode, molding paste zinc electrode is dried under 40 DEG C of temperature conditions 7h, namely one layer of tissue paper of dried paste zinc electrode Surface coating is prepared into zinc anode under 20MPa pressing pressure after pressing 3min.
In gained zinc anode, electrode strengthens parts is netted plastic framework, and frame size is 10 × 12cm2, 6 lattice of above-mentioned plastic frame average mark；Collector is for stretching copper mesh, and the surface density of described wire netting is 10mg/cm2；Copper mesh area is identical with frame size, and described paste zinc electrode is attached to copper mesh both side surface.Described collector has extraction lug, and described lug lead-out mode is double-disk.Described paste zinc electrode includes zinc powder and sodium polyacrylate；Described sodium polyacrylate mass content in paste zinc electrode is 0.8%.Described zinc powder particle diameter is 10-400 μm；Described acrylate copolymer particles size 180 order.Gained zinc anode porosity is 65%, controls within the scope of this by the porosity of zinc anode, there is enough spaces and stores electrolyte and reaction afterproduct, can form good electron propagation ducts simultaneously between active substance between active material particle.
Embodiment 3:
After 250g zinc powder, 1.5g sodium polyacrylate are mixed homogeneously with the acetylene black of 1.5g, its mixture adds 100mL water, after stirring 10min when rotating speed is 1000r/min, is prepared into paste.Tissue paper is positioned over bottom plastic supporting structure, adopt scraper dedicated by mastic blade coating behind the bottom of supporting construction, braiding copper mesh is placed as collector in plastic support centre position, and mastic is uniform at copper mesh top blade coating, paste zinc electrode top tissue paper is covered simultaneously.Above-mentioned paste zinc electrode is dried under 40 DEG C of temperature conditions 1h, namely dried paste zinc electrode is prepared into after pressing 3min under 20MPa pressing pressure zinc anode.
In gained zinc anode, collector is braiding copper mesh, and the surface density of described wire netting is 15mg/cm2.Paste zinc electrode is attached to described lamellar collector both side surface, it is be placed in the netted structure of plastic support within paste zinc electrode and the tissue paper outside jacketed electrode that electrode strengthens parts, reduces active substance in zinc anode and comes off, improves the mechanical strength of zinc anode, strengthen its anti-vibration, anti shock and vibration ability.Coated zinc anode, lowers on the one hand effectively active substance zinc powder and comes off problem, it is simple to transport with store, on the other hand, cladding material has good electrochemical stability in alkali liquor, and resistance is less does not affect high power discharge ability.Described collector has extraction lug, and lead-out mode is double-disk.Described paste zinc electrode includes zinc powder and sodium polyacrylate；Described sodium polyacrylate mass content in paste zinc electrode is 0.6%.Described paste zinc electrode also includes conductive agent acetylene black, and described conductive agent mass content in paste zinc electrode is 0.6%.Described zinc powder particle diameter is 0.5-600 μm；Described binding agent particles size distribution is 100 orders.Described zinc anode porosity is 35%.
Embodiment 4:
20gKOH is dissolved in 100mL water, is poured into 250g zinc powder and in the mixture of 1.5g sodium polyacrylate composition, after stirring 10min when rotating speed is 1000r/min, is prepared into paste.Adopt scraper dedicated by mastic blade coating uniformly thin block paste zinc electrode, molding paste zinc electrode is dried under 40 DEG C of temperature conditions 7h, namely one layer of tissue paper of dried paste zinc electrode Surface coating is prepared into zinc anode under 20MPa pressing pressure after pressing 3min.
In gained zinc anode, collector is braiding copper mesh, and the surface density of described wire netting is 15mg/cm2.Paste zinc electrode is attached to described lamellar collector both side surface, it is be placed in the netted structure of plastic support within paste zinc electrode and the tissue paper outside jacketed electrode that electrode strengthens parts, reduces active substance in zinc anode and comes off, improves the mechanical strength of zinc anode, strengthen its anti-vibration, anti shock and vibration ability.Coated zinc anode, lowers on the one hand effectively active substance zinc powder and comes off problem, it is simple to transport with store, on the other hand, cladding material has good electrochemical stability in alkali liquor, and resistance is less does not affect high power discharge ability.Described collector has extraction lug, and lead-out mode is full slice system.Described paste zinc electrode includes zinc powder and sodium polyacrylate；Described sodium polyacrylate mass content in paste zinc electrode is 0.55%.Described paste zinc electrode also includes KOH；Described KOH mass content in paste zinc electrode is 7.4%.Described zinc powder particle diameter is 0.5-600 μm；Described binding agent particles size distribution is 100 orders.Described zinc anode porosity is 35%.
Fig. 7 is the zinc anode for preparing of embodiment 1,2,3,4 discharge performance curve in 7mol/LKOH solution.The zinc anode prepared using embodiment 1,2,3,4 is as zinc-air battery anode, and in air cathode, Catalytic Layer is with Ag-MnO/C for catalyst, and carrying capacity is 6mg/cm2, diffusion layer is made collector, PTFE and acetylene black with nickel foam and is mixed with and obtains, and acetylene black carrying capacity is 10mg/cm2, electrode area is 120cm2Carrying out constant-current discharge test after being assembled into monocell, discharge current is 12A, it is shown that zinc-air battery all can stable discharging, disposable zinc anode discharge time was up to 8 hours.Zinc anode in transportation-inactive material comes off, and has certain anti-vibration and shock-resistant ability.
Claims (11)
1. zinc/air cell zinc anode, it is characterised in that: include collector, paste zinc electrode, electrode enhancing parts；Described paste zinc electrode is attached to described lamellar collector both side surface；Described electrode enhancing parts are placed in the internal and/or described electrode enhancing parts of paste zinc electrode and are coated on outside paste zinc electrode.
2. zinc anode as claimed in claim 1, it is characterised in that: when described electrode enhancing parts are placed in paste zinc electrode inside, it is plastic plate supporting construction that electrode strengthens parts.
3. zinc anode as claimed in claim 1, it is characterised in that: when described electrode enhancing parts are coated on paste zinc electrode outside, it is the one in hydrocellulose membrane, asbestos film, polypropylene screen, tissue paper that electrode strengthens parts.
4. zinc anode as claimed in claim 1, it is characterised in that: described collector is stretch the one in wire netting, punch metal net, foam metal net, braided metal net.
5. zinc anode as claimed in claim 1, it is characterised in that: described collector has extraction lug, and described lug lead-out mode is the one in one chip, double-disk or monoblock type.
6. zinc anode as claimed in claim 1, it is characterised in that: described paste zinc electrode includes zinc powder and binding agent；Described binding agent is one or more in Kynoar, acrylate copolymer, polyvinyl alcohol, sodium polyacrylate, sodium carboxymethyl cellulose；Described binding agent mass content in paste zinc electrode is 0.25%-5%.
7. zinc anode as described in claim 1 or 6, it is characterised in that: described paste zinc electrode also includes conductive agent, and described conductive agent mass content in paste zinc electrode is 0.1%-5%.
8. zinc anode as claimed in claim 7, it is characterised in that: described conductive agent is one or more in acetylene black, XC-72, BP, MWCNT, Graphene.
9. zinc anode as described in claim 1 or 6, it is characterised in that: described paste zinc electrode also includes KOH and/or NaOH；Described KOH and/or NaOH mass content in paste zinc electrode is 5%-40%.
10. zinc anode as claimed in claim 6, it is characterised in that: described zinc powder particle diameter is 0.5-600 μm；Described binding agent particles size distribution is 50-300 order.
11. zinc anode as claimed in claim 1, it is characterised in that: described zinc anode porosity is 35%-85%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410777145.2A CN105789552A (en) | 2014-12-15 | 2014-12-15 | Zinc positive electrode for zinc/air battery |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410777145.2A CN105789552A (en) | 2014-12-15 | 2014-12-15 | Zinc positive electrode for zinc/air battery |
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| CN105789552A true CN105789552A (en) | 2016-07-20 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108736018A (en) * | 2017-04-17 | 2018-11-02 | 常州优特科新能源科技有限公司 | A kind of zinc and air cell |
| CN110088963A (en) * | 2016-10-21 | 2019-08-02 | 南特能源公司 | Ripple fuel electrode |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1459129A (en) * | 2001-03-09 | 2003-11-26 | 杨德谦 | Metal-gas cell battery with soft pocket and soft pocket material for metal-gas cell battery |
| CN101521280A (en) * | 2008-02-27 | 2009-09-02 | 曹鹏 | Carbon calamine cream for alkaline cell " |
| CN103151490A (en) * | 2012-12-21 | 2013-06-12 | 中国科学院大连化学物理研究所 | Metal/ air battery positive electrode protection method |
| CN104393231A (en) * | 2013-05-07 | 2015-03-04 | 株式会社Lg化学 | Electrode for secondary battery, preparation thereof, and secondary battery and cable-type secondary battery comprising the same |
-
2014
- 2014-12-15 CN CN201410777145.2A patent/CN105789552A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1459129A (en) * | 2001-03-09 | 2003-11-26 | 杨德谦 | Metal-gas cell battery with soft pocket and soft pocket material for metal-gas cell battery |
| CN101521280A (en) * | 2008-02-27 | 2009-09-02 | 曹鹏 | Carbon calamine cream for alkaline cell " |
| CN103151490A (en) * | 2012-12-21 | 2013-06-12 | 中国科学院大连化学物理研究所 | Metal/ air battery positive electrode protection method |
| CN104393231A (en) * | 2013-05-07 | 2015-03-04 | 株式会社Lg化学 | Electrode for secondary battery, preparation thereof, and secondary battery and cable-type secondary battery comprising the same |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110088963A (en) * | 2016-10-21 | 2019-08-02 | 南特能源公司 | Ripple fuel electrode |
| US11335918B2 (en) | 2016-10-21 | 2022-05-17 | Form Energy, Inc. | Corrugated fuel electrode |
| US11923568B2 (en) | 2016-10-21 | 2024-03-05 | Form Energy, Inc. | Corrugated fuel electrode |
| CN108736018A (en) * | 2017-04-17 | 2018-11-02 | 常州优特科新能源科技有限公司 | A kind of zinc and air cell |
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Application publication date: 20160720 |
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