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催化剂/交换膜复合材料(英文)

关键词:新能源,燃料电池,PEM
简介:The benefit of mechanical reinforcement of ionic membranes was realized early in the development and application of perfluoro ionomers for industrial electrolytic processes, such as chlor-alkali in the late 1970s.Freestanding, pure, ionomeric films are typically weak and susceptible to swelling when hydrated; hydration of the membrane significantly reduces its strength due to the plasticization of the ionomer. The macro-mechanical reinforcement of ionomer membranes for industrial applications is today typically performed with inert chemically resistant woven fabrics, such as woven polytetrafluoroethylene
(PTFE). This provides the desired physical strength and allows thinner membranes with lower resistance to be utilized, with the further benefit of decreasing material content, and therefore, cost of the membrane.

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