Understanding the Activity of Co-N4-xCx in Atomic Metal Catalysts for Oxygen Reduction Catalysis
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Jia, Yi
Wei, Fenfei
Zhuang, Linzhou
Yang, Dongjiang
Liu, Jizi
Wang, Xin
Lin, Sen
Yuan, Pei
Yao, Xiangdong
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Abstract
Atomic metal catalysis (AMC) provides an effective way to enhance activity for the oxygen reduction reaction (ORR). Cobalt anchored on nitrogen‐doped carbon materials have been extensively reported. The carbon‐hosted Co‐N4 structure was widely considered as the active site; however, it is very rare to investigate the activity of Co partially coordinated with N, for example, Co‐N4−x Cx . Herein, the activity of Co‐N4−x Cx with tunable coordination environment is investigated as the active sites for ORR catalysis. The defect (di‐vacancies) on carbon is essential for the formation of Co‐N4−x Cx . N species play two important roles in promoting the intrinsic activity of atomic metal catalyst: N coordinated with Co to manipulate the reactivity by modification of electronic distribution and N helped to trap more Co to increase the number of active sites.
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Angewandte Chemie International Edition
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59
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15
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© 2020 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. This is the peer reviewed version of the following article: Understanding the Activity of Co-N4-xCx in Atomic Metal Catalysts for Oxygen Reduction Catalysis, Angewandte Chemie International Edition, 2020, 59 (15), pp. 6122-6127, which has been published in final form at https://doi.org/10.1002/anie.202000324. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. This article may not be enhanced, enriched or otherwise transformed into a derivative work, without express permission from Wiley or by statutory rights under applicable legislation. Copyright notices must not be removed, obscured or modified. The article must be linked to Wiley’s version of record on Wiley Online Library and any embedding, framing or otherwise making available the article or pages thereof by third parties from platforms, services and websites other than Wiley Online Library must be prohibited.
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Chemical sciences
Science & Technology
Physical Sciences
Chemistry, Multidisciplinary
Chemistry
active sites
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Yang, Q; Jia, Y; Wei, F; Zhuang, L; Yang, D; Liu, J; Wang, X; Lin, S; Yuan, P; Yao, X, Understanding the Activity of Co-N4-xCx in Atomic Metal Catalysts for Oxygen Reduction Catalysis, Angewandte Chemie International Edition, 2020, 59 (15), pp. 6122-6127