Highly Active Surface Structure in Nanosized Spinel Cobalt-Based Oxides for Electrocatalytic Water Splitting
Highly Active Surface Structure in Nanosized Spinel Cobalt-Based Oxides for Electrocatalytic Water Splitting
复制标题
用于电催化水分解的纳米尖晶石钴基氧化物的高活性表面结构
DOI:
10.1021/acs.jpcc.8b00407
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发表时间:
2018-06
影响因子:
3.7
通讯作者:
Zhang Shuo
中科院分区:
文献类型:
--
作者:
Zhou Jing;Li Jiong;Zhang Linjuan;Song Sanzhao;Wang Yu;Lin Xiao;Gu Songqi;Wu Xiang;Weng Tsu-Chien;Wang Jianqiang;Zhang Shuo
Spinel cobalt-based oxides are a promising family of materials for water splitting to replace currently used noble-metal catalysts. Identifying the highly active facet and the corresponding coordinated structure of surface redox centers is pivotal for the rational design of low-cost and efficient nanosized catalysts. Using high-resolution transmission electron microscopy and advanced X-ray techniques, as well as ab initio modeling, we found that the activity of Co3+ ions exhibits the surface dependence owing to the variability of its electronic configurations. Our calculation shows that the Co3+ site in {100} facet of nanosized Li2Co2O4 exhibits an impressive intrinsic activity with low overpotential, far lower than that of the {110} and {111} facets. The unique, well-defined CoO5 square-pyramidal structure in this nonpolar surface stabilizes the unusual intermediate-spin states of the Co3+ ion. Specially, we unraveled that oxygen ion anticipates the redox process via the strong hybridization Co 3d–O 2p s...
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影响因子:
3.7
作者:
DEGROOT, FMF;FUGGLE, JC;SAWATZKY, GA
通讯作者:
SAWATZKY, GA
影响因子:
29.4
作者:
Liu, Fengzhen;Xiang, Junhui;Hu, Zhongbo;Li, Yadong
通讯作者:
Li, Yadong
DOI:
10.1002/chin.201211009
发表时间:
2012-03
期刊:
ChemInform
影响因子:
--
作者:
Jin Suntivich;Kevin J. May;H. Gasteiger;J. Goodenough;Y. Shao-horn
通讯作者:
Jin Suntivich;Kevin J. May;H. Gasteiger;J. Goodenough;Y. Shao-horn
影响因子:
3.7
作者:
Kresse, G;Furthmuller, J
通讯作者:
Furthmuller, J
DOI:
10.1002/3527600434.eap236
发表时间:
2003-04
期刊:
--
影响因子:
--
作者:
通讯作者:
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