Comprehensive Understanding of the Spatial Configurations of CeO2 in NiO for the Electrocatalytic Oxygen Evolution Reaction: Embedded or Surface-Loaded
Gao, W; Xia, ZM; Cao, FX; Ho, JC; Jiang, Z; Qu, YQ
2018
发表期刊ADVANCED FUNCTIONAL MATERIALS
ISSN1616-301X
卷号28期号:11页码:-
文章类型期刊论文
摘要Introducing cerium (Ce) species into electrocatalysts has been recently developed as an effective approach to improve their oxygen evolution reaction (OER) performance. Importantly, the spatial distribution of Ce species in the hosts can determine the availability of Ce species either as additives or as co-catalysts, which would dictate their different contributions to the enhanced electrocatalytic performance. Herein, the comprehensive investigations on two different catalyst configurations, namely CeO2-embedded NiO (Ce-NiO-E) and CeO2-surface-loaded NiO (Ce-NiO-L), are performed to understand the effect of their specific spatial arrangements on OER characteristics. The Ce-NiO-E catalysts exhibit a smaller overpotential of 382 mV for 10 mA cm(-2) and a lower Tafel slope of 118.7 mV dec(-1), demonstrating the benefits of the embedded configuration for OER, as compared with those of Ce-NiO-L (426 mV and 131.6 mV dec(-1)) and pure NiO (467 mV and 140.7 mV dec(-1)), respectively. The improved OER property of Ce-NiO-E originates from embedding small-sized CeO2 clusters into the host for the larger specific surface area, richer surface defects, higher oxygen adsorption capacity, and better optimized electronic structures of the surface active sites, as compared with Ce-NiO-L. Above findings provide a valuable guideline for and insight in designing catalysts with different spatial configurations for enhanced catalytic properties.
关键词High-performance Electrocatalysts Metal-organic-framework Water Oxidation Highly Efficient Nickel-alloy Catalysts Nanosheets Batteries Vacancies Storage
DOI10.1002/adfm.201706056
收录类别SCI
语种英语
WOS记录号WOS:000427110100023
引用统计
文献类型期刊论文
条目标识符http://ir.sinap.ac.cn/handle/331007/28947
专题中科院上海应用物理研究所2011-2018年
作者单位1.Gao, W
2.Xia, ZM
3.Cao, FX
4.Ho, JC
5.Jiang, Z
6.Qu, YQ
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GB/T 7714
Gao, W,Xia, ZM,Cao, FX,et al. Comprehensive Understanding of the Spatial Configurations of CeO2 in NiO for the Electrocatalytic Oxygen Evolution Reaction: Embedded or Surface-Loaded[J]. ADVANCED FUNCTIONAL MATERIALS,2018,28(11):-.
APA Gao, W,Xia, ZM,Cao, FX,Ho, JC,Jiang, Z,&Qu, YQ.(2018).Comprehensive Understanding of the Spatial Configurations of CeO2 in NiO for the Electrocatalytic Oxygen Evolution Reaction: Embedded or Surface-Loaded.ADVANCED FUNCTIONAL MATERIALS,28(11),-.
MLA Gao, W,et al."Comprehensive Understanding of the Spatial Configurations of CeO2 in NiO for the Electrocatalytic Oxygen Evolution Reaction: Embedded or Surface-Loaded".ADVANCED FUNCTIONAL MATERIALS 28.11(2018):-.
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