Low permeability composite proton exchange membrane including organic-inorganic hybrid

A proton exchange membrane, inorganic technology, used in fuel cell parts, separators/films/diaphragms/spacers, fuel cells, etc., can solve the problem of power generation efficiency decline, fuel cell output voltage drop, short battery life, etc. problem, to achieve the effect of blocking the penetration of methanol

Active Publication Date: 2012-07-04
IND TECH RES INST
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Problems solved by technology

[0005] However, the membrane electrode assembly (MEA) of direct methanol fuel cells faces problems such as short battery life and power generation efficiency degradation due to the phenomenon of methanol crossover.
In existing fuel cells, the anode structure has the problem of penetration of liquid, colloidal, solid, or gaseous organic fuels (such as alcohols such as methanol, aldehydes, or acids), such as part of the fuel and water passing through the anode It does not react with the catalyst, but directly passes through the proton exchange membrane to reach the cathode, resulting in a reduction in the catalytic reaction capacity of the cathode
In addition, the fuel undergoes an oxidation r...

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  • Low permeability composite proton exchange membrane including organic-inorganic hybrid
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  • Low permeability composite proton exchange membrane including organic-inorganic hybrid

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Embodiment Construction

[0017] The proton exchange membrane proposed in this embodiment is a kind of organic-inorganic composite proton exchange membrane mixed with organic materials and inorganic materials, which includes about 0.001wt% to 10wt% of graphene derivatives with two-dimensional structure as inorganic material, and 99.999wt%-90wt% of polymer materials with sulfonate groups are used as organic materials. The graphene derivatives herein are selected from the group consisting of graphene oxide, graphene sulfide, graphene hydroxide, graphene carbonate, graphene nitride and graphene sulfonate. The organic material is, for example, a sulfonated polyfluoropolymer (PTFE-PFSA copolymer) or a sulfonated hydrocarbon polymer such as s-PEEK, s-PPO, s-PI, s-PES or s-PPBP.

[0018] In an embodiment of the present invention, the content of sulfonated graphene in the organic-inorganic hybrid proton exchange membrane is 0.005 wt%, and the content of organic materials is 99.995 wt%. In another embodiment, ...

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Abstract

A composite proton exchange membrane is made up of dispersed organized graphene in ion conducting polymer as a fuel barrier material. The composite proton exchange membrane includes an inorganic material of 0.001-10 wt % and an organic material of 99.999-90 wt %. The inorganic material is a graphene derivative with two-dimensional structure. The organic material includes a polymer material with sulfonic acid group.

Description

technical field [0001] The invention relates to a proton exchange membrane, in particular to an organic-inorganic hybrid composite proton exchange membrane with low permeability. Background technique [0002] A fuel cell (Fuel Cell, FC) is a power generation device that uses chemical energy to be directly converted into electrical energy. Compared with traditional power generation methods, fuel cells have low pollution, low noise, high energy density, and high energy conversion efficiency. The advantage is that it is a very future-looking clean energy, which can be applied in various fields such as portable electronic products, household power generation systems, transportation tools, military equipment, space industry, and small power generation systems. [0003] Various types of fuel cells have different application markets depending on their operating principles and operating environments. The applications in mobile energy are mainly hydrogen proton exchange membrane fuel...

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Application Information

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IPC IPC(8): H01M8/02H01M2/16H01M50/409
CPCH01M8/103H01M8/02H01M8/1048Y02E60/523H01M8/1039H01M8/1051H01M8/1032H01M8/1023H01M2/16H01M8/1025Y02E60/50Y02E60/10H01M50/409
Inventor 蔡丽端简宏仲廖永宏
Owner IND TECH RES INST
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