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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
发表期刊JOURNAL OF MATERIALS CHEMISTRY A
卷号6期号:5页码:1967-1970
摘要The 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.
关键词Thin-film Nickel Catalyst Water Nanocrystals Performance Reduction Oxidation Surfaces Foam
学科领域Science & Technology - Other Topics ; Materials Science
语种英语
文献类型期刊论文
条目标识符http://ir.nimte.ac.cn/handle/174433/16820
专题2018专题
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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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