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Stabilized hydroxide-mediated nickel-based electrocatalysts for high-current-density hydrogen evolution in alkaline media
Luo, Yuting1,2; Zhang, Zhiyuan1,2; Yang, Fengning1,2; Li, Jiong3; Liu, Zhibo4; Ren, Wencai4; Zhang, Shuo3; Liu, Bilu1,2
Corresponding AuthorZhang, Shuo(zhangshuo@sinap.ac.cn) ; Liu, Bilu(bilu.liu@sz.tsinghua.edu.cn)
2021-07-06
Source PublicationENERGY & ENVIRONMENTAL SCIENCE
ISSN1754-5692
Pages10
AbstractLarge-scale production of green hydrogen by electrochemical water splitting is considered as a promising technology to address critical energy challenges caused by the extensive use of fossil fuels. Although nonprecious nickel-based catalysts work well at low current densities, they need large overpotentials at high current densities, which hinders their wide applications in practical industry. Here we report a hydroxide-mediated nickel-based electrocatalyst for high-current-density hydrogen evolution, which delivers a current density of 1000 mA cm(-2) at an ultralow overpotential of 97 mV. Combined X-ray absorption spectroscopy (XAS) and X-ray photoelectron spectroscopy (XPS) results show charge redistribution of Ni sites caused by Mo and surface Fe, which can stabilize the surface nickel hydroxide at high current densities for promoting the water dissociation step. Combined in situ XAS, quasi in situ XPS, and density functional theory calculations indicate that Fe plays an important role in the improved catalytic activity. Such a catalyst is synthesized at the metre-size scale and delivers a current density of 500 mA cm(-2) at 1.56 V in overall water splitting, demonstrating its potential for practical use. This work highlights a charge engineering strategy to design efficient catalysts for high current density electrochemical applications.
Funding OrganizationNational Natural Science Foundation of China ; Guangdong Innovative and Entrepreneurial Research Team Program ; Bureau of Industry and Information Technology of Shenzhen ; Shenzhen Basic Research Project ; Youth 1000-Talent Program of China
DOI10.1039/d1ee01487k
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[51722206] ; National Natural Science Foundation of China[51920105002] ; Guangdong Innovative and Entrepreneurial Research Team Program[2017ZT07C341] ; Bureau of Industry and Information Technology of Shenzhen[201901171523] ; Shenzhen Basic Research Project[JCYJ20200109144620815] ; Youth 1000-Talent Program of China
WOS Research AreaChemistry ; Energy & Fuels ; Engineering ; Environmental Sciences & Ecology
WOS SubjectChemistry, Multidisciplinary ; Energy & Fuels ; Engineering, Chemical ; Environmental Sciences
WOS IDWOS:000678047600001
PublisherROYAL SOC CHEMISTRY
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/159671
Collection中国科学院金属研究所
Corresponding AuthorZhang, Shuo; Liu, Bilu
Affiliation1.Tsinghua Univ, Shenzhen Geim Graphene Ctr, Tsinghua Berkeley Shenzhen Inst, Shenzhen 518055, Peoples R China
2.Tsinghua Univ, Tsinghua Shenzhen Int Grad Sch, Inst Mat Res, Shenzhen 518055, Peoples R China
3.Chinese Acad Sci, Shanghai Adv Res Inst, Shanghai Synchrotron Radiat Facil, Shanghai 201210, Peoples R China
4.Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China
Recommended Citation
GB/T 7714
Luo, Yuting,Zhang, Zhiyuan,Yang, Fengning,et al. Stabilized hydroxide-mediated nickel-based electrocatalysts for high-current-density hydrogen evolution in alkaline media[J]. ENERGY & ENVIRONMENTAL SCIENCE,2021:10.
APA Luo, Yuting.,Zhang, Zhiyuan.,Yang, Fengning.,Li, Jiong.,Liu, Zhibo.,...&Liu, Bilu.(2021).Stabilized hydroxide-mediated nickel-based electrocatalysts for high-current-density hydrogen evolution in alkaline media.ENERGY & ENVIRONMENTAL SCIENCE,10.
MLA Luo, Yuting,et al."Stabilized hydroxide-mediated nickel-based electrocatalysts for high-current-density hydrogen evolution in alkaline media".ENERGY & ENVIRONMENTAL SCIENCE (2021):10.
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