NIMTE OpenIR  > 2018专题
A Ni(OH)(2)-PtO2 hybrid nanosheet array with ultralow Pt loading toward efficient and durable alkaline hydrogen evolution
Xie, Lisi; Ren, Xiang; Liu, Qin; Cui, Guanwei; Ge, Ruixiang; Asiri, Abdullah M.; Sun, Xuping; Zhang, Qiuju; Chen, Liang
2018
Source PublicationJOURNAL OF MATERIALS CHEMISTRY A
Volume6Issue:5Pages:1967-1970
AbstractThe design and development of highly active electrocatalysts for the hydrogen evolution reaction (HER) in alkaline media is of significant importance. In this communication, we report the direct growth of an ultralow-Pt-content (Pt content: 5.1 wt%) Ni(OH)(2)-PtO2 hybrid nanosheet array on a Ti mesh (Ni(OH)(2)-PtO2 NS/Ti), carried out by hydrothermal treatment of a Ni(OH)(2) nanosheet array on a Ti mesh (Ni(OH)(2) NS/Ti) in the presence of [PtCl6](2-). When used as a 3D catalyst electrode for the HER, the resulting Ni(OH)(2)-PtO2 NS/Ti exhibits superior activity with the need of an overpotential of only 31.4 mV to deliver a geometrical catalytic current density of 4 mA cm(-2) in 0.1 M KOH. Remarkably, this catalyst also shows strong long-term electrochemical durability for at least 100 h with a faradaic efficiency close to 100%. Density functional theory calculations reveal that the Ni(OH)(2)/PtO2 interface can promote the kinetics of H2O dissociation and tune the hydrogen adsorption free energy to a more moderate value, thereby promoting the HER.
KeywordThin-film Nickel Catalyst Water Nanocrystals Performance Reduction Oxidation Surfaces Foam
Subject AreaScience & Technology - Other Topics ; Materials Science
Language英语
Document Type期刊论文
Identifierhttp://ir.nimte.ac.cn/handle/174433/16820
Collection2018专题
Recommended Citation
GB/T 7714
Xie, Lisi,Ren, Xiang,Liu, Qin,et al. A Ni(OH)(2)-PtO2 hybrid nanosheet array with ultralow Pt loading toward efficient and durable alkaline hydrogen evolution[J]. JOURNAL OF MATERIALS CHEMISTRY A,2018,6(5):1967-1970.
APA Xie, Lisi.,Ren, Xiang.,Liu, Qin.,Cui, Guanwei.,Ge, Ruixiang.,...&Chen, Liang.(2018).A Ni(OH)(2)-PtO2 hybrid nanosheet array with ultralow Pt loading toward efficient and durable alkaline hydrogen evolution.JOURNAL OF MATERIALS CHEMISTRY A,6(5),1967-1970.
MLA Xie, Lisi,et al."A Ni(OH)(2)-PtO2 hybrid nanosheet array with ultralow Pt loading toward efficient and durable alkaline hydrogen evolution".JOURNAL OF MATERIALS CHEMISTRY A 6.5(2018):1967-1970.
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