Platinum Cluster/Nanoparticle on CoO Nanosheets with Coupled Atomic Structure and High Electrocatalytic Durability

被引：22
作者：
Qu, H. -J. [1 ,2 ]
Gao, J. J. [1 ]
Wen, Y. R. [3 ]
Shang, B. [1 ]
Wang, J. Q. [4 ]
Lin, Xi [2 ]
Wang, Y. [1 ]
机构：
[1] Congqing Univ, Sch Chem & Chem Engn, Chongqing 400044, Peoples R China
[2] Harbin Inst Technol, Sch Mat Sci & Engn, Shenzhen 518055, Peoples R China
[3] Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China
[4] Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Zhejiang, Peoples R China
来源：
ACS APPLIED ENERGY MATERIALS | 2018年 / 1卷 / 05期
基金：
中国国家自然科学基金;
关键词：
Pt clusters; dealloying; epitaxial growth; fuel cells; oxygen reduction reaction; OXYGEN REDUCTION; CATALYTIC-ACTIVITY; NANOPARTICLES; SUPPORT; OXIDE; NANOSTRUCTURE; PERFORMANCE; ULTRATHIN; PD;
D O I：
10.1021/acsaem.8b00263
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Seeking electrocatalysts with a low Pt content, high activity, and durability in oxygen reduction reaction (ORR) remains one major challenge for fuel cell applications. Herein, by chemical dealloying of AlCoPt ternary alloys, CoO nanosheets with evenly doped ultrasmall Pt clusters/nanoparticles have been obtained. Thanks to the coherent atomic structure between CoO and Pt, the Pt doped CoO (Pt/CoO) can work stably for ORR in 0.1 M HClO4 after tens of thousands of electrochemical cycles and exhibits a 13.5-fold enhancement in the electrochemically active surface area normalized ORR activity over that of commercial Pt/C catalyst.
引用
收藏
页码：1840 / 1845
页数：11
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