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Dirac Nodal Arc Semimetal PtSn 4 : An Ideal Platform for Understanding Surface Properties and Catalysis for Hydrogen Evolution
Author(s) -
Li Guowei,
Fu Chenguang,
Shi Wujun,
Jiao Lin,
Wu Jiquan,
Yang Qun,
Saha Rana,
Kamminga Machteld E.,
Srivastava Abhay K.,
Liu Enke,
Yazdani Aliza N.,
Kumar Nitesh,
Zhang Jian,
Blake Graeme R.,
Liu Xianjie,
Fahlman Mats,
Wirth Steffen,
Auffermann Gudrun,
Gooth Johannes,
Parkin Stuart,
Madhavan Vidya,
Feng Xinliang,
Sun Yan,
Felser Claudia
Publication year - 2019
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201906109
Subject(s) - catalysis , semimetal , electrocatalyst , hydrogen , dirac (video compression format) , electrochemistry , chemical physics , materials science , adsorption , hydrogen fuel , metal , inorganic chemistry , chemistry , chemical engineering , electrode , optoelectronics , physics , band gap , metallurgy , organic chemistry , nuclear physics , neutrino , biochemistry , engineering
Conductivity, carrier mobility, and a suitable Gibbs free energy are important criteria that determine the performance of catalysts for a hydrogen evolution reaction (HER). However, it is a challenge to combine these factors into a single compound. Herein, we discover a superior electrocatalyst for a HER in the recently identified Dirac nodal arc semimetal PtSn 4 . The determined turnover frequency (TOF) for each active site of PtSn 4 is 1.54 H 2 s −1 at 100 mV. This sets a benchmark for HER catalysis on Pt‐based noble metals and earth‐abundant metal catalysts. We make use of the robust surface states of PtSn 4 as their electrons can be transferred to the adsorbed hydrogen atoms in the catalytic process more efficiently. In addition, PtSn 4 displays excellent chemical and electrochemical stabilities after long‐term exposure in air and long‐time HER stability tests.