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2. 发明授权

US5441822A Electrode used in electrochemical reaction and fuel cell using the same 失效
标题翻译：用于电化学反应的电极和使用其的燃料电池
公开(公告)号：US5441822A
公开(公告)日：1995-08-15
申请号：US366099
申请日：1994-12-29
申请人： Keijiro Yamashita , Nobukazu Suzuki
发明人： Keijiro Yamashita , Nobukazu Suzuki
IPC分类号： H01M4/92 , H01M4/96 , H01M8/08 , H01M8/10 , H01M4/86
CPC分类号： H01M4/926 , H01M4/96 , H01M8/08 , H01M8/1004 , H01M2300/0008 , H01M4/921
摘要： An electrode includes a porous catalyst layer having a thickness of about 0.1 mm and a porous diffusion layer having a thickness of about 1.6 mm. The catalyst layer includes a large number of agglomerate portions and a large number of gap portions which are alternately and almost parallelly arranged in a stripe-like manner. The agglomerate portion has a porous body having a porosity of 50% or more and consisting of fine carbon powder particles on which an alloy catalyst containing platinum as a main component is dispersed and carried, and an aqueous phosphoric acid solution serving as an electrolyte held in the pores of the porous body. The gap portion is formed of a large number of water-repellent PTFE fibers having a porosity of 20% or more to connect the agglomerate portions, thereby providing an electrode of a fuel cell having a higher output density than a conventional case with the same amount of catalyst.
摘要翻译：电极包括厚度为约0.1mm的多孔催化剂层和厚度为约1.6mm的多孔扩散层。催化剂层包括大量的团块部分和大量的以条状方式交替地并且几乎平行地排列的间隙部分。凝聚部具有孔隙率为50％以上的多孔体，其中分散有载有作为主要成分的铂的合金催化剂的细小的碳粉末颗粒和用作电解质的磷酸水溶液多孔体的孔。间隙部由大量的孔隙率为20％以上的防水PTFE纤维形成，以连接附聚部分，从而提供具有相同量的常规情况下具有较高输出密度的燃料电池的电极的催化剂。

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