Premium
Carbon‐Supported Divacancy‐Anchored Platinum Single‐Atom Electrocatalysts with Superhigh Pt Utilization for the Oxygen Reduction Reaction
Author(s) -
Liu Jing,
Jiao Menggai,
Mei Bingbao,
Tong Yuxin,
Li Yuping,
Ruan Mingbo,
Song Ping,
Sun Gongquan,
Jiang Luhua,
Wang Ying,
Jiang Zheng,
Gu Lin,
Zhou Zhen,
Xu Weilin
Publication year - 2019
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201812423
Subject(s) - platinum , carbon fibers , catalysis , density functional theory , oxygen reduction reaction , chemistry , materials science , electrochemistry , inorganic chemistry , computational chemistry , electrode , organic chemistry , composite number , composite material
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 °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.