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Graphdiyne Interface Engineering: Highly Active and Selective Ammonia Synthesis
Author(s) -
Fang Yan,
Xue Yurui,
Li Yongjun,
Yu Huidi,
Hui Lan,
Liu Yuxin,
Xing Chengyu,
Zhang Chao,
Zhang Danyan,
Wang Zhongqiang,
Chen Xi,
Gao Yang,
Huang Bolong,
Li Yuliang
Publication year - 2020
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.202004213
Subject(s) - electrocatalyst , catalysis , faraday efficiency , electrochemistry , ammonia , ammonia production , yield (engineering) , interface (matter) , materials science , nitride , cobalt , tandem , chemical engineering , nanotechnology , inorganic chemistry , chemistry , electrode , organic chemistry , composite material , layer (electronics) , engineering , capillary number , capillary action
Abstract A freestanding 3D graphdiyne–cobalt nitride (GDY/Co 2 N) with a highly active and selective interface is fabricated for the electrochemical nitrogen reduction reaction (ECNRR). Density function theory calculations reveal that the interface‐bonded GDY contributes an unique p‐electronic character to optimally modify the Co‐N compound surface bonding, which generates as‐observed superior electronic activity for NRR catalysis at the interface region. Experimentally, at atmospheric pressure and room temperature, the electrocatalyst creates a new record of ammonia yield rate (YNH3) and Faradaic efficiency (FE) of 219.72 μg h −1 mg cat. −1 and 58.60 %, respectively, in acidic conditions, higher than reported electrocatalysts. Such a catalyst is promising to generate new concepts, new knowledge, and new phenomena in electrocatalytic research, driving rapid development in the field of electrocatalysis.