Intrinsically Synergistic Active Centers Coupled with Surface Metal Doping To Facilitate Alkaline Hydrogen Evolution Reaction
作者:Zhong, HF (Zhong, Hua-Fu)[ 1 ] ; Yin, H (Yin, Hui)[ 1 ] ; Zhang, DX (Zhang, Deng-Xue)[ 1 ] ; Gan, LY (Gan, Li-Yong)[ 1,2,3 ] ; Wang, P (Wang, Ping)[ 1 ]
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JOURNAL OF PHYSICAL CHEMISTRY C
卷: 123 期: 39 页: 24220-24224
DOI: 10.1021/acs.jpcc.9b08127
出版年: OCT 3 2019
文献类型:Article
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摘要
Efficient catalysts for hydrogen evolution reactions (HERs) in acid media usually lose substantial performance in alkaline media primarily due to their inefficiency in the prior step: water dissociation. To circumvent the issue, synergistic catalysts have been designed via combining them with metal (hydro)oxides. While this strategy suffers from high cost and complicated fabrication methods, generating catalytic synergy within a single-phase catalyst is considerably more promising. Herein, using first-principles calculations, we demonstrate that Ni2P is such a prototypical catalyst whose (001) surface provides not only uniformly distributed single-atom-like but also more importantly intrinsically synergetic active sites to catalyze different elementary steps of alkaline HER Significantly, the unique structural attributes enable surface metal doping to effectively modulate the activity through a bifunctional mechanism and lead to a robust activity descriptor: OH binding strength. We believe that these findings will provide a rational paradigm that advances innovative design of high-performance and economic electrocatalysts for alkaline HER.
关键词
KeyWords Plus:NICKEL PHOSPHIDE; EFFICIENT; ELECTROCATALYST; NI2P(001); CATALYSTS; ARRAYS; FOAM
作者信息
通讯作者地址: Gan, LY; Wang, P (通讯作者)
显示更多South China Univ Technol, Sch Mat Sci & Engn, Key Lab Adv Energy Storage Mat Guangdong Prov, Guangzhou 510641, Guangdong, Peoples R China.
通讯作者地址: Gan, LY (通讯作者)
显示更多Chongqing Univ, Inst Struct & Funct, Chongqing 400030, Peoples R China.
通讯作者地址: Gan, LY (通讯作者)
显示更多Chongqing Univ, Dept Phys, Chongqing 400030, Peoples R China.
地址:
显示更多[ 1 ] South China Univ Technol, Sch Mat Sci & Engn, Key Lab Adv Energy Storage Mat Guangdong Prov, Guangzhou 510641, Guangdong, Peoples R China
显示更多[ 2 ] Chongqing Univ, Inst Struct & Funct, Chongqing 400030, Peoples R China
显示更多[ 3 ] Chongqing Univ, Dept Phys, Chongqing 400030, Peoples R China
电子邮件地址:ganly@cqu.edu.cn; mspwang@scut.edu.cn
基金资助致谢
基金资助机构显示详情授权号
National Natural Science Foundation of China
11504303
51671087
National Natural Science Foundation of China
51621001
National Key R&D Program of China
2018YFB1502100
National Natural Science Foundation of Guangdong Province
2016A030312011
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出版商
AMER CHEMICAL SOC, 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
期刊信息
Impact Factor (影响因子): Journal Citation Reports
类别 / 分类
研究方向:Chemistry; Science & Technology - Other Topics; Materials Science
Web of Science 类别:Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary