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
作者： Sun, Yanchun 1 ; Kong, Fanpeng 2 ; Chen, Zhongxiang 1 ; Wang, Haitao 1 ; Wang, Peng 1 ; Han, Shicheng 1 ; Wu, Song 1 ; Lu 1 ;
作者机构： 1.Chinese Acad Fishery Sci, Minist Agr & Rural Areas, Heilongjiang River Fisheries Res Inst, Lab Qual & Safety Risk Assessments Aquat Prod Har, Harbin 150070, Peoples R China
2.Harbin Inst Technol, Sch Chem & Chem Engn, Harbin 150001, Peoples R China
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.
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