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The Crucial Role of Charge Accumulation and Spin Polarization in Activating Carbon‐Based Catalysts for Electrocatalytic Nitrogen Reduction
Author(s) -
Yang Yuanyuan,
Zhang Lifu,
Hu Zhenpeng,
Zheng Yao,
Tang Cheng,
Chen Ping,
Wang Ruguang,
Qiu Kangwen,
Mao Jing,
Ling Tao,
Qiao ShiZhang
Publication year - 2020
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201915001
Subject(s) - catalysis , heteroatom , chemistry , carbon fibers , electrochemistry , redox , inorganic chemistry , polarization (electrochemistry) , chalcogen , materials science , organic chemistry , electrode , ring (chemistry) , composite number , composite material
Cost‐effective carbon‐based catalysts are promising for catalyzing the electrochemical N 2 reduction reaction (NRR). However, the activity origin of carbon‐based catalysts towards NRR remains unclear, and regularities and rules for the rational design of carbon‐based NRR electrocatalysts are still lacking. Based on a combination of theoretical calculations and experimental observations, chalcogen/oxygen group element (O, S, Se, Te) doped carbon materials were systematically evaluated as potential NRR catalysts. Heteroatom‐doping‐induced charge accumulation facilitates N 2 adsorption on carbon atoms and spin polarization boosts the potential‐determining step of the first protonation to form *NNH. Te‐doped and Se‐doped C catalysts exhibited high intrinsic NRR activity that is superior to most metal‐based catalysts. Establishing the correlation between the electronic structure and NRR performance for carbon‐based materials paves the pathway for their NRR application.