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Insight into the role of Ni-Fe dual sites in the oxygen evolution reaction based on atomically metal-doped polymeric carbon nitride

文献类型：期刊论文

作者Wu, Chuchu4,5; Zhang, Xiaoming4; Xia, Zhangxun4; Shu, Miao2,5; Li, Huanqiao4; Xu, Xinlong4,5; Si, Rui2; Rykov, Alexandre I.3; Wang, Junhu3; Yu, Shansheng1
刊名JOURNAL OF MATERIALS CHEMISTRY A
出版日期2019-06-21
卷号7期号:23页码:14001-14010
ISSN号2050-7488
DOI10.1039/c9ta03163d
通讯作者Wang, Suli(suliwang@dicp.ac.cn) ; Sun, Gongquan(gqsun@dicp.ac.cn)
英文摘要The oxygen evolution reaction (OER) plays a critical role in efficient conversion and storage of renewable energy sources, whereas the active sites for the most representative electrocatalysts, Ni-Fe compounds, remain under debate. In this work, we have developed polymeric carbon nitride (PCN) with atomically dispersed N-coordinated Ni-Fe sites to investigate the OER process. The Ni-Fe dual sites consist of adjacent Ni and Fe atoms coordinated with N atoms in the PCN matrix. NiFe-codoped PCN exhibits higher electrocatalytic activity than monometal-doped catalysts, showing a lower overpotential (310 mV at 10 mA cm(-2)) and smaller Tafel slope (38 mV dec(-1)) in 1 M KOH, indicating that Ni-Fe dual-metal sites significantly favor the OER process. According to density functional theory calculations based on the oxidized-NiFe@PCN model, it was found that adjacent Ni and Fe atoms co-participate in the OER process for NiFe-codoped PCN, leading to a much lower energy barrier (0.10 or 0.22 eV for U = 1.58 V), while the effect of electronic modification of the single metal active sites by the other component (Ni sites by Fe sites or vice versa) contributes less to activity enhancement, thus leading to a rational explanation on the synergistic effect of the NiFe-based OER catalysts.
WOS关键词WATER OXIDATION ; C CATALYST ; IRON ; ELECTROCATALYSTS ; REDUCTION ; HYDROGEN ; DENSITY ; EFFICIENT ; NANORODS ; G-C3N4
资助项目Transformational Technologies for Clean Energy and Demonstration, Strategic Priority Research Program of the Chinese Academy of Sciences[XDA21090300] ; National Natural Science Foundation of China[91834301]
WOS研究方向Chemistry ; Energy & Fuels ; Materials Science
语种英语
WOS记录号WOS:000472566400013
出版者ROYAL SOC CHEMISTRY
资助机构Transformational Technologies for Clean Energy and Demonstration, Strategic Priority Research Program of the Chinese Academy of Sciences ; Transformational Technologies for Clean Energy and Demonstration, Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Transformational Technologies for Clean Energy and Demonstration, Strategic Priority Research Program of the Chinese Academy of Sciences ; Transformational Technologies for Clean Energy and Demonstration, Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Transformational Technologies for Clean Energy and Demonstration, Strategic Priority Research Program of the Chinese Academy of Sciences ; Transformational Technologies for Clean Energy and Demonstration, Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Transformational Technologies for Clean Energy and Demonstration, Strategic Priority Research Program of the Chinese Academy of Sciences ; Transformational Technologies for Clean Energy and Demonstration, Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China
源URL[http://cas-ir.dicp.ac.cn/handle/321008/175831]  
专题大连化学物理研究所_中国科学院大连化学物理研究所
通讯作者Wang, Suli; Sun, Gongquan
作者单位1.Jilin Univ, Dept Mat Sci, Changchun 130012, Jilin, Peoples R China
2.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai Synchrotron Radiat Facil, Shanghai 201204, Peoples R China
3.Chinese Acad Sci, Dalian Inst Chem Phys, Mossbauer Effect Data Ctr, Dalian 116023, Peoples R China
4.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China
5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Wu, Chuchu,Zhang, Xiaoming,Xia, Zhangxun,et al. Insight into the role of Ni-Fe dual sites in the oxygen evolution reaction based on atomically metal-doped polymeric carbon nitride[J]. JOURNAL OF MATERIALS CHEMISTRY A,2019,7(23):14001-14010.
APA Wu, Chuchu.,Zhang, Xiaoming.,Xia, Zhangxun.,Shu, Miao.,Li, Huanqiao.,...&Sun, Gongquan.(2019).Insight into the role of Ni-Fe dual sites in the oxygen evolution reaction based on atomically metal-doped polymeric carbon nitride.JOURNAL OF MATERIALS CHEMISTRY A,7(23),14001-14010.
MLA Wu, Chuchu,et al."Insight into the role of Ni-Fe dual sites in the oxygen evolution reaction based on atomically metal-doped polymeric carbon nitride".JOURNAL OF MATERIALS CHEMISTRY A 7.23(2019):14001-14010.

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来源：大连化学物理研究所

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