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Surface reconstruction of cobalt phosphide nanosheets by electrochemical activation for enhanced hydrogen evolution in alkaline solution
Su, Liang; Cui, Xiangzhi; He, Ting; Zeng, Liming; Tian, Han; Song, Yiling; Qi, Kai; Xia, Bao Yu
2019-02-21
Source PublicationCHEMICAL SCIENCE
ISSN2041-6520
Volume10Issue:7Pages:2019
SubtypeArticle
AbstractTransition metal phosphides exhibit promising catalytic performance for the hydrogen evolution reaction (HER); however their surface structure evolution during electrochemical operation has rarely been studied. In this work, we investigate the surface reconstruction of CoP nanosheets by an in situ electrochemical activation method. After remodeling, CoP nanosheets experience an irreversible and significant evolution of the morphology and composition, and low-valence Co complexes consisting of Co(OH)(x) species are formed on the surface of CoP nanosheets, and they largely accelerate the dissociation of water. Benefiting from the synergistic effect of CoP and Co(OH)(x), the working electrode shows a remarkably enhanced HER activity of 100 mV at 10 mA cm(-2) with a Tafel slope of 76 mV dec(-1), which is better than that of most transition metal phosphide catalysts. This work would provide a deep understanding of surface reconstruction and a novel perspective for rational design of high performance transition metal phosphide electrocatalysts for water related electrolysis.
DOI10.1039/c8sc04589e
Language英语
WOS Research AreaChemistry
PublisherROYAL SOC CHEMISTRY
Citation statistics
Cited Times:47[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/27322
Collection中国科学院上海硅酸盐研究所
Recommended Citation
GB/T 7714
Su, Liang,Cui, Xiangzhi,He, Ting,et al. Surface reconstruction of cobalt phosphide nanosheets by electrochemical activation for enhanced hydrogen evolution in alkaline solution[J]. CHEMICAL SCIENCE,2019,10(7):2019.
APA Su, Liang.,Cui, Xiangzhi.,He, Ting.,Zeng, Liming.,Tian, Han.,...&Xia, Bao Yu.(2019).Surface reconstruction of cobalt phosphide nanosheets by electrochemical activation for enhanced hydrogen evolution in alkaline solution.CHEMICAL SCIENCE,10(7),2019.
MLA Su, Liang,et al."Surface reconstruction of cobalt phosphide nanosheets by electrochemical activation for enhanced hydrogen evolution in alkaline solution".CHEMICAL SCIENCE 10.7(2019):2019.
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