铂石墨烯氧还原电催化剂的共还原法制备及表征-IngentaConnect.PDFVIP

See discussions, stats, and author profiles for this publication at: /publication/263756113 Synthesis and Characteristics of Pt/graphene by Co-Reduction Method for Oxygen Reduction... Article in A TA PHYSI O- HIMI A SINI A · December 2012 DOI: 10.3866/PKU.WHXB201209252 ITATIONS READS 5 27 2 authors, including: Zi-Feng Ma Shanghai Jiao Tong University 223 PUBLI ATIONS 3,579 ITATIONS SEE PROFILE Some of the authors of this publication are also working on these related projects: supercapacitor and Full cell View project All content following this page was uploaded by Zi-Feng Ma on 10 June 2015. The user has requested enhancement of the downloaded file. 物理化学学报(Wuli Huaxue Xuebao) December Acta Phys. ⁃Chim. Sin. 2012, 28 (12), 2879-2884 2879 [Article] doi: 10.3866/PKU.WHXB201209252 铂/石墨烯氧还原电催化剂的共还原法制备及表征 王万丽 马紫峰* (上海交通大学化学工程系, 上海200240) 摘要: 使用硼氢化钠共还原法制备40% (w)铂/石墨烯电催化剂用于氧还原反应. 通过循环伏安测试发现, 这 种方法制备所得铂/石墨烯催化剂对氧还原反应活性较铂/碳催化剂差, 但稳定性有所提高. 在稳定性测试中, 铂/石墨烯电催化性能衰减为50%, 较铂/碳(79%)好. X射线衍射(XRD)和透射电子显微镜(TEM)表征发现在铂/ 石墨烯催化剂中两者存在明显交互作用, 这可能是阻止石墨烯再堆垛和防止铂颗粒团聚的主要原因. 通过对单 电池性能测试也发现铂/石墨烯催化剂更有利于电池长期稳定. 关键词: 石墨烯; 共还原法; 电催化剂; 氧还原反应; 质子交换膜燃料电池 中图分类号: O646 Synthesis and Characteristics of Pt/graphene by Co-Reduction Method for Oxygen Reduction Reactions WANG Wan-Li MA Zi-Feng* (Department of Chemical Engineering, Shang