Nanocomposite of platinum and prussian blue: A highly active and stable electrocatalyst towards oxygen reduction reaction in acidic media

文献类型： 外文期刊

第一作者： Sun, Yanchun

作者： Sun, Yanchun;Chen, Zhongxiang;Wang, Haitao;Wang, Peng;Han, Shicheng;Wu, Song;Sun, Yanchun;Kong, Fanpeng;Lu, Weihong;Wang, Jiajun

作者机构：

关键词： Platinum; Oxygen reduction reaction; Prussian blue; Electronic effect; Stability

期刊名称：INTERNATIONAL JOURNAL OF HYDROGEN ENERGY （ 影响因子：5.816； 五年影响因子：5.242 ）

ISSN： 0360-3199

年卷期： 2021 年 46 卷 60 期

页码：

收录情况： SCI

摘要： Deployment of proton exchange membrane fuel cells (PEMFCs) are of vital importance for the mitigation of fossil energy shortage and environment pollution. A significant amount of Pt on cathode is highly needed to accelerate the process of sluggish oxygen reduction reaction (ORR) and maintains a stable long-term performance. During ORR, the yield of undesirable hydrogen peroxide through a two-electron pathway not only decreases outer power but also weakens the long-term stability. Herein, Pt-prussian blue (PB) composite, featuring around structure, is firstly proposed and facilely fabricated via electrostatic self-assembly strategy. Pt1PB0.25/C shows 50% higher activity than commercial Pt/C, rationally ascribed to modulated electronic structure and higher selectivity towards four-electron pathway. Moreover, in contrast with the striking 38% loss in mass activity for Pt/C after accelerated degradation tests (ADTs), Pt1PB0.25/C shows only a 15% decrease possibly due to the elimination of hydrogen oxide and the anchor interaction between Pt and PB. The employment of PB with a synergy role paves an efficient way for the fabrication of brand-new Pt-based catalysts with high activity and stability. (C) 2021 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

分类号：

  • 相关文献
作者其他论文 更多>>

微信小程序