A compound proton exchange film for self-humidity increase fuel battery and its making method

A proton exchange membrane and fuel cell technology, applied in the field of proton exchange membranes, can solve the problems of complex electroless plating methods, long membrane production cycle, poor battery performance, etc., to eliminate mixed overpotential, increase proton conductivity, and improve battery efficiency. performance effect

Active Publication Date: 2008-04-30
SUNRISE POWER CO LTD
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  • Application Information

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Problems solved by technology

However, the Pt electroless plating method is complicated, the film forming cycle is long, and the addition of non-proton-conducting oxides in the composite film increases the internal resistance of the film, and the battery performance is poor. In addition, the addition of Pt is easy to produce electronic short circuits in the entire film.
[0011] In the literature (L.Wang, D.M.Xing, Y.H.Liun, J.Power Sourc

Method used

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  • A compound proton exchange film for self-humidity increase fuel battery and its making method
  • A compound proton exchange film for self-humidity increase fuel battery and its making method
  • A compound proton exchange film for self-humidity increase fuel battery and its making method

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[0038] The supported catalyst is prepared by impregnating and reducing the nano-scale catalytically active component carrier to support the catalytically active component, and the role of the catalyst is the interpenetrating H in the chemical catalytic membrane. 2 And O 2 Water is generated to wet the proton exchange membrane. The role of the catalytically active component carrier is to absorb the water generated on the surface of the catalyst active component and the water electrochemically generated on the cathode side, and release water in time to wet the membrane when the membrane needs water. In addition, the carrier can provide additional protons in the composite membrane. Conduction path, thereby improving the conductivity of the composite membrane, improving the open circuit voltage and battery performance of the battery.

[0039] The self-humidifying composite membrane in the present invention includes two types. One is to dissolve the polymer electrolyte in a high boilin...

Example Embodiment

[0041] Example 1: 3.7 mg / ml of H 2 PtCl 6 Solution and Nano SO -2 4 / ZrO 2 Soak the same volume (50ml) at room temperature for 24h, and then use H at 200℃ 2 Reduction 10h, prepared into a supported catalyst Pt / (SO -2 4 / ZrO 2), the Pt loading is 0.2wt.%.

Example Embodiment

[0042] Example 2: 3.7 mg / ml HAuCl 4 Solution and Nano SO -2 4 / Fe 2 O 3 Soak the same volume (50ml) at room temperature for 24h, then use H at 120℃ 2 Reduction 10h, prepared into a supported catalyst Au / (SO -2 4 / Fe 2 O 3 ), the Au loading capacity is 10 -3 wt.%.

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Abstract

The invention relates to a proton exchange membrane for a fuel cell, in particular to a combined self-humidifying proton exchange membrane for a self-humidifying fuel cell and a preparation method. The method comprises the steps of distributing loaded catalysts to organic solution of solid macromolecule electrolyte to form casting solution, then casting, coating, or tape casting are adopted to prepare the self-humidifying proton exchange membrane, or the casting solution is adopted with methods of casting, coating, or tape casting to be filled in a porous strengthening membrane to prepare theself-humidifying proton exchange membrane. The self-humidifying proton exchange membrane of the invention generates from non-electric short circuit in the whole membrane, and has the characteristics of good density, high proton conductivity, strong water retaining capacity, as well as low cost.

Description

technical field [0001] The invention relates to a proton exchange membrane for a fuel cell, in particular to a composite proton exchange membrane for a self-humidifying fuel cell and a synthesis method thereof. Background technique [0002] The use of fossil fuels has caused a large amount of pollutants to be discharged, leading to environmental pollution problems. The development of new clean energy has attracted great attention from governments and business circles around the world. Proton exchange membrane fuel cell (PEMFC) is a power generation device that directly converts chemical energy in fuel and oxidant into electrical energy through electrochemical reactions, and has the advantages of high energy conversion efficiency and environmental friendliness. Currently, fuel cell technology has entered the demonstration stage. However, there are many obstacles in the process of fuel cell commercialization: such as infrastructure architecture, hydrogen production and storag...

Claims

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Application Information

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IPC IPC(8): H01M8/02H01M8/10C08L71/00C08L81/06C08L79/08C08L25/06C08J5/22C08J5/18H01M8/1025
CPCY02E60/521Y02E60/50Y02P70/50
Inventor 张华民张宇朱晓兵耿笑颖毕成梁永民衣宝廉
Owner SUNRISE POWER CO LTD
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