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Phosphorus Incorporation into Co9S8 Nanocages for Highly Efficient Oxygen Evolution Catalysis
Qiu, Bocheng; Cai, Lejuan; Wang, Yang; Guo, Xuyun; Ma, Sainan; Zhu, Ye; Tsang, Yuen Hong; Zheng, Zijian; Zheng, Renkui; Chai, Yang
2019-11-30
Source PublicationSMALL
ISSN1613-6810
Volume15Issue:45
SubtypeArticle
AbstractThe improvement of activity of electrocatalysts lies in the increment of the density of active sites or the enhancement of intrinsic activity of each active site. A common strategy to realize dual active sites is the use of bimetal compound catalysts, where each metal atom contributes one active site. In this work, a new concept is presented to realize dual active sites with tunable electron densities in monometal compound catalysts. Dual Co2+ tetrahedral (Co2+(T-d)) and Co3+ octahedral (Co3+(O-h)) coordination active sites are developed and adjustable electron densities on the Co2+(T-d) and Co3+(O-h) are further achieved by phosphorus incorporation (P-Co9S8). The experimental results and density functional theory calculations show that the nonmetal P doping can systematically modulate charge density of Co2+(T-d) and Co3+(O-h) in P-Co9S8 and simultaneously improve the electrical conductivity of Co9S8, which substantially enhances oxygen evolution reaction performance of P-Co9S8.
Keywordcatalytic sites electron modulation nanocages oxygen evolution reaction phosphorus doping
DOI10.1002/smll.201904507
WOS KeywordHYDROGEN EVOLUTION ; ELECTROCATALYST ; VACANCIES ; CO3O4 ; NANOSHEETS ; SITES ; SHELL
Language英语
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
PublisherWILEY-V C H VERLAG GMBH
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/27535
Collection中国科学院上海硅酸盐研究所
Recommended Citation
GB/T 7714
Qiu, Bocheng,Cai, Lejuan,Wang, Yang,et al. Phosphorus Incorporation into Co9S8 Nanocages for Highly Efficient Oxygen Evolution Catalysis[J]. SMALL,2019,15(45).
APA Qiu, Bocheng.,Cai, Lejuan.,Wang, Yang.,Guo, Xuyun.,Ma, Sainan.,...&Chai, Yang.(2019).Phosphorus Incorporation into Co9S8 Nanocages for Highly Efficient Oxygen Evolution Catalysis.SMALL,15(45).
MLA Qiu, Bocheng,et al."Phosphorus Incorporation into Co9S8 Nanocages for Highly Efficient Oxygen Evolution Catalysis".SMALL 15.45(2019).
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