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Pt/石墨烯燃料电池催化剂的制备、表征及性能

Release time:2021-03-15 Hits:

Key Words:石墨烯;;燃料电池;;冷冻干燥;;循环伏安;;电催化;;甲醇

Abstract:采用冷冻干燥-蒸汽还原法成功合成了负载Pt纳米粒子的石墨烯燃料电池催化剂。用扫描电子显微镜(SEM)、透射电子显微镜(TEM)、X射线衍射仪(XRD)对Pt/石墨烯催化剂的表面形貌及物相组成进行了表征分析。用循环伏安法(CV)研究了Pt/石墨烯催化剂对酸性条件下甲醇的电催化氧化活性。结果表明,通过冷冻干燥后水合肼蒸汽还原的Pt/石墨烯催化剂样品,Pt颗粒粒径在20～40nm,均匀负载于石墨烯的片层结构上。当Pt负载量为10%时,催化活性最高。

Volume:v.33;No.137

Issue:04

Translation or Not:no

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