Novel fuel cell based on graphene thermoelectric management layers

A fuel cell and management technology, applied in the direction of fuel cells, fuel cell components, battery electrodes, etc., can solve the problems of fuel cell cost and durability, lack of low cost, etc.

Active Publication Date: 2015-11-11
广东喜玛拉雅氢能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In short, the above-mentioned patents all focus on the unilateral innovation of fuel cell cost or durability, but cannot take into account the comprehensive improvement of fuel cell cost and durability, a

Method used

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  • Novel fuel cell based on graphene thermoelectric management layers
  • Novel fuel cell based on graphene thermoelectric management layers
  • Novel fuel cell based on graphene thermoelectric management layers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Use a proton exchange membrane (perfluorosulfonic acid type) with a thickness of 20 microns, and use an embossing template with striped protrusions (the striped protrusion is 10 microns) at 130°C to hot-press the concave and convex on both sides of the proton exchange membrane. microstructure. A proton exchange membrane with ordered microstructures on both sides was prepared. Then, the above-mentioned proton exchange membrane is put into the atomic layer vapor deposition equipment, and the precursor of Pt, MeCpPtMe3, is passed through first, and after several cycles, the precursor that reaches the atomic level is chemically adsorbed on the surface of the above-mentioned proton exchange membrane. After the excess precursor is discharged, the Pt thin film layer is prepared by passing through hydrogen plasma for reduction, and a three-in-one assembly of catalytic layer thin film | proton exchange membrane | catalytic layer thin film is made. Observed under an electron mic...

Embodiment 2

[0036] Use a proton exchange membrane (aromatic ring type) with a thickness of 50 microns, and use an embossing template with striped protrusions (0.5 microns for striped protrusions) at 155°C to heat-press concave and convex ordered microstructures on both sides of the proton exchange membrane . A proton exchange membrane with ordered microstructures on both sides was prepared. Then, immerse the above-mentioned proton exchange membrane in H2PtCl6 solution, add formaldehyde solution after immersion for 5 hours to reduce to obtain Pt particles, prepare Pt thin film layers on both sides of the above-mentioned proton exchange membrane, and make a catalytic layer thin film|proton exchange membrane|catalyst layer Membrane 3-in-1 component. Observed under an electron microscope, the main particle size distribution of the Pt catalyst particles is 10 nanometers, the catalyst particles are evenly attached to the surface of the proton exchange membrane, and each catalyst particle is cl...

Embodiment 3

[0039] Use a reinforced perfluorosulfonic acid proton exchange membrane with a thickness of 18 microns, and use an embossing template with striped protrusions (the striped protrusions are 1 micron) at 130°C to heat-press the concave-convex orderly microstructures on both sides of the proton exchange membrane. structure. A proton exchange membrane with ordered microstructures on both sides was prepared. Then, immerse the above-mentioned proton exchange membrane in a mixed solution of H2PtCl6 and RuCl3, add formic acid solution after immersion for 2 hours to obtain PtRu alloy particles, and prepare PtRu thin film layers on both sides of the above-mentioned proton exchange membrane to make a catalytic layer thin film|proton exchange Membrane|Catalytic layer thin film three-in-one component. Observed under the electron microscope, the main particle size distribution of the PtRu alloy catalyst particles is 5 nanometers, the catalyst particles are evenly attached to the surface of ...

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Abstract

The invention discloses a novel fuel cell based on graphene thermoelectric management layers. The novel fuel cell comprises a flow field plate, a diffusion layer, an anode catalytic layer, a proton exchange membrane, a cathode catalytic layer, a diffusion layer and a flow field plate, wherein the anode catalytic layer and the cathode catalytic layer both belong to catalytic layers, the novel fuel cell is characterized in that the graphene thermoelectric management layers are arranged between the anode catalytic layer and the diffusion layer and between the cathode catalytic layer and the diffusion layer and are prepared by mixing graphene, an alcohol solvent and a dispersing agent, and micro-sized concave-convex structures are arranged on the front surface and the back surface of the proton exchange membrane. The graphene-based thermoelectric management layers have ultrahigh electron conduction rate and ultrahigh thermal conduction rate, electrons generated during the electrochemical reaction process of the catalytic layers of the fuel cell and required electrons can be rapidly exported and imported, electrochemical polarization and ohmic polarization are reduced, and output performance is improved; moreover, a large amount of waste heat generated by a catalyst can be rapidly discharged, and stable electrochemical reaction is maintained; and meanwhile, temperature and electric field in the catalytic layers also can be balanced, and the service life of the fuel cell is prolonged.

Description

technical field [0001] The invention belongs to the technical field of energy conversion and energy storage, in particular to the field of fuel cell new energy power generation, and in particular to a novel fuel cell based on a graphene thermoelectric management layer. Background technique [0002] Proton Exchange Membrane Fuel Cell (Proton Exchange Membrane Fuel Cell, hereinafter referred to as fuel cell) is a zero-emission, high-efficiency and high-power-density power generation device, especially in the application of new energy transportation power, which has an extremely attractive prospect. After years of continuous research and development worldwide, fuel cells have made breakthroughs in performance indicators such as energy efficiency, power density, specific power, and low-temperature start-up, such as: 1) The fuel cell engine developed by Hyundai-Kia has an energy efficiency of 25%. The rated power (the ratio of DC output electric energy to the input hydrogen fuel ...

Claims

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Application Information

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IPC IPC(8): H01M4/86H01M8/02
CPCH01M4/8673H01M8/0267Y02E60/50
Inventor 王诚郭桂华梁峰戴智舫王建龙
Owner 广东喜玛拉雅氢能科技有限公司
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