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

被引：342
|
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：
中国国家自然科学基金; 中国博士后科学基金;
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
收藏
页码：1163 / 1167
页数：5
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