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Title: Atomically dispersed Ni(I) as the active site for electrochemical CO2 reduction
Authors: Yang, Hong Bin
Hung, Sung-Fu
Liu, Song
Yuan, Kaidi
Miao, Shu
Zhang, Liping
Huang, Xiang
Wang, Hsin-Yi
Cai, Weizheng
Chen, Rong
Gao, Jiajian
Yang, Xiaofeng
Chen, Wei
Huang, Yanqiang
Chen, Hao Ming
Li, Chang Ming
Zhang, Tao
Liu, Bin
Keywords: Engineering::Chemical engineering
Issue Date: 2018
Source: Yang, H. B., Hung, S.-F., Liu, S., Yuan, K., Miao, S., Zhang, L., . . . Liu, B. (2018). Atomically dispersed Ni(I) as the active site for electrochemical CO2 reduction. Nature Energy, 3(2), 140-147. doi:10.1038/s41560-017-0078-8
Journal: Nature Energy
Abstract: Electrochemical reduction of CO2 to chemical fuel offers a promising strategy for managing the global carbon balance, but presents challenges for chemistry due to the lack of effective electrocatalyst. Here we report atomically dispersed nickel on nitrogenated graphene as an efficient and durable electrocatalyst for CO2 reduction. Based on operando X-ray absorption and photoelectron spectroscopy measurements, the monovalent Ni(I) atomic center with a d9 electronic configuration was identified as the catalytically active site. The single-Ni-atom catalyst exhibits high intrinsic CO2 reduction activity, reaching a specific current of 350 A gcatalyst−1 and turnover frequency of 14,800 h−1 at a mild overpotential of 0.61 V for CO conversion with 97% Faradaic efficiency. The catalyst maintained 98% of its initial activity after 100 h of continuous reaction at CO formation current densities as high as 22 mA cm−2.
ISSN: 2058-7546
DOI: 10.1038/s41560-017-0078-8
Rights: © 2018 Macmillan Publishers Limited, part of Springer Nature. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:SCBE Journal Articles

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