Carbon-Supported Divacancy-Anchored Platinum Single-Atom Electrocatalysts with Superhigh Pt Utilization for the Oxygen Reduction Reaction

被引：344

作者：

Liu, Jing ^{[1
,2
]}

Jiao, Menggai ^{[3
]}

Mei, Bingbao ^{[2
,4
]}

Tong, Yuxin ^{[5
]}

Li, Yuping ^{[6
]}

Ruan, Mingbo ^{[1
]}

Song, Ping ^{[1
]}

Sun, Gongquan ^{[6
]}

Jiang, Luhua ^{[6
,7
]}

Wang, Ying ^{[8
]}

Jiang, Zheng ^{[4
]}

Gu, Lin ^{[5
,9
]}

Zhou, Zhen ^{[3
]}

Xu, Weilin ^{[1
]}

机构：

[1] Chinese Acad Sci, Changchun Inst Appl Chem, Jilin Prov Key Lab Low Carbon Chem Power, State Key Lab Electroanalyt Chem, 5625 Renmin St, Changchun 130022, Jilin, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[3] Nankai Univ, Inst New Energy Mat Chem, Sch Mat Sci & Engn, Tianjin 300350, Peoples R China

[4] Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai Synchrotron Radiat Facil, Shanghai 201204, Peoples R China

[5] Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China

[6] Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Div Fuel Cell & Battery, Dalian 116023, Peoples R China

[7] Qingdao Univ Sci & Technol, Coll Mat Sci & Engn, Qingdao 266042, Peoples R China

[8] Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Rare Earth Resource Utilizat, Changchun 130022, Jilin, Peoples R China

[9] Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2019年 / 58卷 / 04期

基金：

中国博士后科学基金; 中国国家自然科学基金;

关键词：

carbon defects; fuel cells; oxygen reduction reaction; platinum; single-atom catalysts; TOTAL-ENERGY CALCULATIONS; ENHANCED ACTIVITY; PTNI ALLOY; CATALYSTS; GRAPHENE; NANOPARTICLES; DURABILITY; TRANSITION; ALGORITHM; NITROGEN;

D O I：

10.1002/anie.201812423

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Maximizing the platinum utilization in electrocatalysts toward oxygen reduction reaction (ORR) is very desirable for large-scale sustainable application of Pt in energy systems. A cost-effective carbon-supported carbon-defect-anchored platinum single-atom electrocatalysts (Pt-1/C) with remarkable ORR performance is reported. An acidic H-2/O-2 single cell with Pt-1/C as cathode delivers a maximum power density of 520 mW cm(-2) at 80 degrees C, corresponding to a superhigh platinum utilization of 0.09 g(Pt) kW(-1). Further physical characterization and density functional theory computations reveal that single Pt atoms anchored stably by four carbon atoms in carbon divacancies (Pt-C-4) are the main active centers for the observed high ORR performance.

引用

页码：1163 / 1167

页数：5

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