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WO2021181085A1 - Catalyseur - Google Patents

Catalyseur Download PDF

Info

Publication number
WO2021181085A1
WO2021181085A1 PCT/GB2021/050585 GB2021050585W WO2021181085A1 WO 2021181085 A1 WO2021181085 A1 WO 2021181085A1 GB 2021050585 W GB2021050585 W GB 2021050585W WO 2021181085 A1 WO2021181085 A1 WO 2021181085A1
Authority
WO
WIPO (PCT)
Prior art keywords
graphene sheets
fuel cell
composition according
catalyst
typically
Prior art date
Application number
PCT/GB2021/050585
Other languages
English (en)
Inventor
David Hodgson
Hubert MEISSEL
Original Assignee
Amalyst Limited
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from GBGB2003464.1A external-priority patent/GB202003464D0/en
Priority claimed from GBGB2003617.4A external-priority patent/GB202003617D0/en
Application filed by Amalyst Limited filed Critical Amalyst Limited
Publication of WO2021181085A1 publication Critical patent/WO2021181085A1/fr

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00Electrodes
    • H01M4/86Inert electrodes with catalytic activity, e.g. for fuel cells
    • H01M4/90Selection of catalytic material
    • H01M4/92Metals of platinum group
    • H01M4/925Metals of platinum group supported on carriers, e.g. powder carriers
    • H01M4/926Metals of platinum group supported on carriers, e.g. powder carriers on carbon or graphite
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B32/00Carbon; Compounds thereof
    • C01B32/15Nano-sized carbon materials
    • C01B32/182Graphene
    • C01B32/194After-treatment
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2204/00Structure or properties of graphene
    • C01B2204/20Graphene characterized by its properties
    • C01B2204/32Size or surface area
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01GCAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G11/00Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/22Electrodes
    • H01G11/30Electrodes characterised by their material
    • H01G11/32Carbon-based
    • H01G11/36Nanostructures, e.g. nanofibres, nanotubes or fullerenes
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30Hydrogen technology
    • Y02E60/50Fuel cells

Definitions

  • compositions for use in fuel cells comprising: a plurality of catalyst-functionalised graphene sheets; and one or more spacer particles; characterised in that the spacer particles partially disrupt the co-ordination between the graphene sheets; and wherein the spacer particles comprise one or more metals.
  • the particle size distribution of the spacers need not be such that all particles have the same dimensions. As one skilled in the art will appreciate, such highly uniform formulations are very difficult to create. However, the particle size distribution may be a normal distribution (i.e. a Gaussian distribution) or a bimodal distribution.
  • the spacer will comprise an electrically insulating material. It has surprisingly been found that employing an electrically insulating material appears to improve the electrochemical performance. This is counter-intuitive, not only because it was not expected for an insulating material to augment electrochemical processes but, because the presence of insulating materials in electrochemical systems typically reduces the overall efficiency of charge transfer (making the whole electrochemical process less efficient). Even if such an adverse phenomena is occurring in the present invention, as can be seen from the examples, better results are nevertheless obtained with insulating materials as compared to embodiments employing conducting spacers.
  • an electrode comprising the composition according to the first aspect of the invention.
  • the electrode is typically a cathode, though anodes are also envisaged.
  • the electrode may be part of a membrane electrode assembly (MEA) as would be familiar to one skilled in the art (see, for example, WO213093449).
  • the electrodes may be diffusion electrodes, comprising an electrically conducting support with a diffusion material deposited on the surface comprising the complex.
  • Figure 2 shows polarization curves (on a 10 cm 2 membrane electrode assembly) of the catalyst according to Example 1 without spacers (identified as “HM10”) compared to the same catalyst with titanium oxide spacers (identified as “HM10 + PO2"). For comparison purposes, this was contrasted with a commercial MEA made using 40 wt.% Pt on carbon black.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Nanotechnology (AREA)
  • Inorganic Chemistry (AREA)
  • Catalysts (AREA)
  • Inert Electrodes (AREA)

Abstract

L'invention concerne un catalyseur destiné à être utilisé dans des piles à combustible, des procédés de fabrication dudit catalyseur, des électrodes et des piles à combustible comprenant ledit catalyseur et l'utilisation dudit catalyseur dans des piles à combustible. En particulier, l'invention utilise un graphène fonctionnalisé par catalyseur perturbé, à l'aide d'une série d'éléments d'espacement (typiquement fabriqués à partir de substances non métalliques), pour optimiser les performances des matériaux.
PCT/GB2021/050585 2020-03-10 2021-03-09 Catalyseur WO2021181085A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GBGB2003464.1A GB202003464D0 (en) 2020-03-10 2020-03-10 Catalyst
GB2003464.1 2020-03-10
GB2003617.4 2020-03-12
GBGB2003617.4A GB202003617D0 (en) 2020-03-12 2020-03-12 Catalyst

Publications (1)

Publication Number Publication Date
WO2021181085A1 true WO2021181085A1 (fr) 2021-09-16

Family

ID=74870845

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2021/050585 WO2021181085A1 (fr) 2020-03-10 2021-03-09 Catalyseur

Country Status (1)

Country Link
WO (1) WO2021181085A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114864968A (zh) * 2022-04-06 2022-08-05 东风汽车集团股份有限公司 一种燃料电池用抗反极催化剂及其制备方法和应用
CN114941157A (zh) * 2022-05-30 2022-08-26 安徽工业大学 一种电催化剂材料及其制备方法
CN115020718A (zh) * 2022-06-14 2022-09-06 太原理工大学 用于甲醇氧化反应的非贵金属纳米催化剂及其制备方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009143405A2 (fr) * 2008-05-22 2009-11-26 The University Of North Carolina At Chapel Hill Synthèse de feuillets de graphène et composites nanoparticulaires en comprenant
WO2013093449A2 (fr) 2011-12-20 2013-06-27 Ucl Business Plc Pile à combustible
US20140098461A1 (en) * 2012-10-09 2014-04-10 Aruna Zhamu Spacer-modified graphene electrode for supercapacitor
CN107394222A (zh) * 2017-07-10 2017-11-24 浙江美都墨烯科技有限公司 氧化铈/贵金属/石墨烯三元复合材料及其制备方法和应用
WO2019158569A1 (fr) 2018-02-13 2019-08-22 Ucl Business Plc Procédé de préparation de nanomatériau

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009143405A2 (fr) * 2008-05-22 2009-11-26 The University Of North Carolina At Chapel Hill Synthèse de feuillets de graphène et composites nanoparticulaires en comprenant
WO2013093449A2 (fr) 2011-12-20 2013-06-27 Ucl Business Plc Pile à combustible
US20140098461A1 (en) * 2012-10-09 2014-04-10 Aruna Zhamu Spacer-modified graphene electrode for supercapacitor
CN107394222A (zh) * 2017-07-10 2017-11-24 浙江美都墨烯科技有限公司 氧化铈/贵金属/石墨烯三元复合材料及其制备方法和应用
WO2019158569A1 (fr) 2018-02-13 2019-08-22 Ucl Business Plc Procédé de préparation de nanomatériau

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
ECE ARICI ET AL.: "An effective electrocatalyst based on platinum nanoparticles supported with graphene nanoplatelets and carbon black hybrid for PEM fuel cells'", INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, vol. 44, no. 27, 24 May 2019 (2019-05-24), pages 14175 - 14183, XP085691804, DOI: 10.1016/j.ijhydene.2018.11.210
SEHKYU PARK ET AL.: "Design of graphene sheets-supported Pt catalyst layer in PEM fuel cells", ELECTROCHEMISTRY COMMUNICATIONS, vol. 13, 3 March 2011 (2011-03-03), pages 258 - 261, XP028147536, DOI: 10.1016/j.elecom.2010.12.028
YANNICK GARSANY ET AL.: "Analytical Procedure for Accurate Comparison of Rotating Disk Electrode Results for the Oxygen Reduction Activity of Pt/C", JOURNAL OF THE ELECTROCHEMICAL SOCIETY, vol. 161, no. 5, 2014, pages F628 - F640

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114864968A (zh) * 2022-04-06 2022-08-05 东风汽车集团股份有限公司 一种燃料电池用抗反极催化剂及其制备方法和应用
CN114864968B (zh) * 2022-04-06 2024-04-16 东风汽车集团股份有限公司 一种燃料电池用抗反极催化剂及其制备方法和应用
CN114941157A (zh) * 2022-05-30 2022-08-26 安徽工业大学 一种电催化剂材料及其制备方法
CN114941157B (zh) * 2022-05-30 2023-11-28 安徽工业大学 一种电催化剂材料及其制备方法
CN115020718A (zh) * 2022-06-14 2022-09-06 太原理工大学 用于甲醇氧化反应的非贵金属纳米催化剂及其制备方法
CN115020718B (zh) * 2022-06-14 2024-02-13 太原理工大学 用于甲醇氧化反应的非贵金属纳米催化剂及其制备方法

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