公开(公告)号：KR1020010061632A

公开(公告)日：2001-07-07

申请号：KR1019990064130

申请日：1999-12-28

Applicant: 한국에너지기술연구원

Inventor： 김창수 ,  전영갑 ,  백동현 ,  곽상희 ,  신동렬

IPC: H01M8/06

Abstract: PURPOSE: A method for preparing a composite polymer membrane of polymer electrolyte membrane fuel cell(PEMFC) is provided, which lowers a price of the polymer membrane, produces the electrolytic polymer membrane having a relatively thin thickness and reduces expansion and contraction of the polymer membrane. And a method for preparing a composite polymer membrane/electrode assembly by using the same is provided. CONSTITUTION: The method for preparing a composite polymer membrane comprises steps of: (i) hot pressing or rolling a perfluorosulfonylfluoride/TFE copolymer resin at 200-250 deg.C to obtain a pre-formed precursor sheet; (ii) after inserting a porous membrane in the center of the pre-formed precursor sheet, hot pressing or rolling it to obtain a composite sheet of the pre-formed precursor and the porous membrane; (iii) treating the composite sheet with an aqueous solution of sodium hydroxide in a 5-30 weight ratio to convert the composite pre-formed sheet consisting of the composite perfluorosulfonylfluoride/TFE copolymer resin into a Na+ formed composite perfluorosulfonate polymer membrane; and (iv) hydrating the Na+ formed composite perfluorosulfonate polymer membrane to convert it into a H+ formed composite perfluorosulfonate polymer membrane. The composite polymer membrane/electrode assembly is prepared by the steps of: (i) hot pressing or rolling a perfluorosulfonylfluoride/TFE copolymer resin at 200-250 deg.C to obtain a pre-formed precursor sheet; (ii) after inserting a porous membrane in the center of the pre-formed precursor sheet, hot pressing or rolling it to obtain a composite sheet of the pre-formed precursor and the porous membrane; (iii) treating the composite sheet with an aqueous solution of sodium hydroxide in a 5-30 weight ratio to convert the composite pre-formed sheet consisting of the composite perfluorosulfonylfluoride/TFE copolymer resin into a Na+ formed composite perfluorosulfonate polymer membrane; (iv) coating the Na+ formed composite perfluorosulfonate polymer membrane with a platinum catalyst ink; and (v) hot pressing the catalyst ink coated composite polymer membrane at 120-200 deg.C to produce a composite polymer membrane/electrode assembly.

Abstract translation: 目的：提供一种制备聚合物电解质膜燃料电池（PEMFC）的复合聚合物膜的方法，降低了聚合物膜的价格，生产了具有较薄厚度的电解聚合物膜，并降低了聚合物膜的膨胀和收缩 。 并且提供了通过使用该复合聚合物膜/电极组件制备复合聚合物膜/电极组件的方法。 构成：制备复合聚合物膜的方法包括以下步骤：（i）在200-250℃热压或轧制全氟磺酰氟/ TFE共聚物树脂以获得预制前体片; （ii）在预先形成的前体片的中心插入多孔膜后，热压或滚压，得到预成型前体和多孔膜的复合片; （iii）以5-30重量比的氢氧化钠水溶液处理复合片材，将由复合全氟磺酰氟/ TFE共聚物树脂组成的复合预成型片材转变为形成Na +的复合全氟磺酸盐聚合物膜; 和（iv）使Na +形成的复合全氟磺酸盐聚合物膜水合，以将其转化成H +形成的复合全氟磺酸盐聚合物膜。 通过以下步骤制备复合聚合物膜/电极组件：（i）在200-250℃热压或轧制全氟磺酰氟/ TFE共聚物树脂以获得预成形的前体片; （ii）在预先形成的前体片的中心插入多孔膜后，热压或滚压，得到预成型前体和多孔膜的复合片; （iii）以5-30重量比的氢氧化钠水溶液处理复合片材，将由复合全氟磺酰氟/ TFE共聚物树脂组成的复合预成型片材转变为形成Na +的复合全氟磺酸盐聚合物膜; （iv）用铂催化剂油墨涂覆形成Na +的复合全氟磺酸盐聚合物膜; 和（v）在120-200℃热压催化剂油墨复合聚合物膜以制备复合聚合物膜/电极组件。