| 专利名称 | Method of preparing of nanometer electrocatalyst for proton exchange membrane fuel cell | 申请号 | US20010932048 | 专利类型 | US | 公开（公告）号 | US6518217 | 公开（授权）日 | 2003.02.11 | 申请（专利权）人 | 中国科学院长春应用化学研究所 | 发明（设计）人 | DU RONGBING (CN); LU TIANHONG (CN); XING WEI (CN) | 主分类号 | B01J27/13 | IPC主分类号 | B01J27/13;B01J21/18;B01J27/06;H01M4/88;H01M4/86 | 专利有效期 | Method of preparing of nanometer electrocatalyst for proton exchange membrane fuel cell 至Method of preparing of nanometer electrocatalyst for proton exchange membrane fuel cell | 法律状态 | 说明书摘要 | The present invention relates a method for preparing nanometer electrocatalyst for proton exchange membrane fuel cells, comprising the steps of: 1) adding in water a platinum halogen compound or a mixture of a platinum halogen compound and a ruthenium halogen compound, and active carbon, the amount of noble metal in the solution is 0.5-10 g/L, and the amount of active carbon is 0.05-2 g/L; 2) adjusting the pH of the solution to 2.5-10.5 with potassium hydroxide and/or ammonium hydroxide; 3) adding dropwise a reducing agent to an amount of 2.5 to 5 times in excess of that of the noble metal in moles, and allowing the reduction reaction to proceed; 4) filtering off the liquid and washing the remains; and 6) drying the remains. The catalysts prepared by the present invention have uniform particle sizes in the range of 4 0.5 nm, and superior electrochemical properties. |
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