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    • 51. 发明授权
    • Electrode substrate for electrochemical cell from carbon and cross-linkable resin fibers
    • 用于碳和可交联树脂纤维的电化学电池的电极基底
    • US08298725B2
    • 2012-10-30
    • US12311483
    • 2007-03-29
    • Richard D. Breault
    • Richard D. Breault
    • H01M4/00
    • D04H1/54D04H1/42D04H1/4242D04H1/542D04H1/64D04H1/732D21H13/16D21H13/22D21H13/50D21H17/07D21H27/30H01M8/023Y02P70/56
    • A method of making an electrochemical cell electrode substrate includes creating an aqueous or dry mixture of chopped carbon fibers, chopped cross-linkable resin fibers that are still fuseable after being formed into a felt, such as novolac, a temporary binder, such as polyvinyl alcohol fiber or powder, forming a non-woven felt from either an aqueous suspension of the aqueous mixture or an air suspension of the dry mixture, by a non-woven, wet-lay or dry-lay, respectively, felt forming process, a resin curing agent, such as hexamethylene tetramine may be included in the aqueous or dry mixture, or it may be coated onto the formed felt; pressing one or more layers of the formed felt for 1-5 minutes to a controlled thickness and a controlled porosity at a temperature at which the resin melts, cross-links and then cures, such as 150° C.-200° C.; and heat treating the pressed felt in a substantially inert atmosphere, first to 750° C.-1000° C. and then to 1000° C.-3000° C.
    • 制造电化学电池电极基板的方法包括产生切碎的碳纤维的水性或干混合物,在形成毡之后仍然可熔的切断的可交联树脂纤维,例如酚醛清漆,临时粘合剂如聚乙烯醇 纤维或粉末,通过水分混合物的水性悬浮液或干燥混合物的空气悬浮液,分别通过无纺布,湿敷或干铺,分别形成无纺毡,毡成型工艺,树脂 固化剂如六亚甲基四胺可以包含在水或干混合物中,或者可以将其涂布到形成的毡上; 将一层或多层所形成的毡压制至受控的厚度,并在树脂熔化,交联,然后固化,例如150℃-2200℃的温度下控制孔隙率。 并在基本惰性的气氛中对压制毛毡进行热处理,首先至750℃-1000℃,然后至1000℃-3000℃