A kind of ion exchange membrane that reduces methanol fuel permeation and its preparation method
An ion exchange membrane, methanol fuel technology, applied in the field of fuel cells, can solve complex problems, achieve the effects of excellent performance, high efficiency and low methanol permeability, and avoid cell voltage
Inactive Publication Date: 2020-11-17
ZHEJIANG UNIV +1
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Problems solved by technology
[0013] The existing methods for preparing ion-exchange membranes with low methanol permeability are generally complicated. Therefore, the development of an ion-exchange membrane with high efficiency and low methanol permeability and a simple preparation method are of great significance for the large-scale application of direct methanol fuel cells.
Method used
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Embodiment 1
[0034] (1) Dissolve 1 g PVA powder in 50 mL deionized water, 80 o C heat and stir for 0.5 hour to obtain PVA gel; add 0.5 g AER to PVA gel, 80 o C heat and stir for 0.5 hours to obtain PVA-AER gel; coat the gel on the glass substrate with a film method, and dry it naturally;
[0035] (2) Immerse the dried film in 1 M CuCl 2 Solution for 1 hour, then take it out and rinse the membrane surface with deionized water, and then immerse it in deionized water for 5 minutes;
[0036] (3) Take the membrane out of deionized water and immerse it in a 0.1M sodium borohydride solution for 0.5 hours, then take it out and rinse it clean to obtain the ion exchange membrane of the present invention.
Embodiment 2
[0038] The difference with embodiment 1 is that CuCl in step (2) 2 AgNO 3 Instead, the other parameters are the same.
Embodiment 3
[0040] The difference with embodiment 1 is that CuCl in step (2) 2 For Cl 4 Na 2 Pd substitute, other parameters are the same.
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Abstract
The invention discloses an ion exchange membrane for reducing permeation of a methanol fuel and a preparation method of the ion exchange membrane. The membrane comprises polyvinyl alcohol, ion exchange resin particles and metal particles, wherein the polyvinyl alcohol forms a membrane substrate and is provided with micro pore passages formed during the membrane formation process, the ion exchange resin particles are intercalated into the polyvinyl alcohol membrane substrate to develop an ion exchange effect, and the metal particles are filled in the micro pore passages of the membrane substrate and are used for preventing fuel methanol molecules from being diffused through the micro pore passages. The preparation method of the ion exchange membrane comprises the steps of forming the polyvinyl alcohol and ion exchange resin powder, dissolving the polyvinyl alcohol and the ion exchange resin powder in deionized water to form gel and form the membrane, immersing the membrane in a metal salt solution for cleaning, and immersing the membrane in a sodium borohydride solution. The ion exchange membrane disclosed by the invention has the characteristics of high efficiency and low methanol permeation rate, moreover, the preparation method is simple and practical, and precision equipment is not needed.
Description
Technical field [0001] The invention relates to the field of fuel cells, in particular to an ion exchange membrane in a polymer electrolyte membrane fuel cell and a preparation method thereof. Background technique [0002] As a special device that converts chemical energy into electrical energy, fuel cell is considered to be because of its high energy conversion efficiency, low pollution, wide selection of energy storage materials, low noise and other incomparable advantages of other energy generating devices. One of the most promising and environmentally friendly new chemical power sources. Among them, the polymer electrolyte membrane fuel cell has the advantages of fast start-up and fast response to load changes, etc., which has attracted more and more attention and has become a recent research hotspot. [0003] The polymer electrolyte membrane fuel cell uses the polymer electrolyte membrane as a solid electrolyte to separate the anode and cathode and conduct protons (H + ) Or h...
Claims
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IPC IPC(8): H01M8/1018H01M8/1072H01M8/1081
CPCH01M8/1018H01M8/1074H01M8/1081Y02E60/50
Inventor 董泽熹蒋伟王紫旌刘锋王宣程陈宇麒吴睿知盛欢欢秦海英褚雯邓永红石桥曹伟刘嘉斌
Owner ZHEJIANG UNIV