Spherical Sacrificial ZnO Template-Derived Hybrid Ni/Co3O4 Cubes as Efficient Bifunctional Electrocatalyst for Overall Water Splitting

doi:10.1002/ente.201901310

SIC OpenIR

	Spherical Sacrificial ZnO Template-Derived Hybrid Ni/Co3O4 Cubes as Efficient Bifunctional Electrocatalyst for Overall Water Splitting
	Riaz, MS; Zhao, SW; Dong, CL; Iqbal, MJ; Zhao, YT; Huang, FQ
	2020-05-01
Source Publication	ENERGY TECHNOLOGY
ISSN	2194-4288
Issue	5
Subtype	Article
Abstract	Heterostructure transition metal derivatives have been extensively studied in electrocatalysis, but most of the hybrid samples are on nanoscale with low stability and tap density. ZnO microspheres are applied as a sacrificial template, followed by alkaline etching and aluminum reduction to construct Ni/Co3O4 microcubes. The porous hybrid microcubes show stirring performance in both hydrogen evolution reaction (HER) and oxygen evolution reaction (OER). For HER, it exhibits comparable overpotential of 145 mV at 10 mA cm(-2) as Pt/C (101 mV) and desirable stability. For OER, it outperforms RuO2 with lower overpotential when the current exceeds 17.8 mA cm(-2) and much smaller Tafel slope of 34 mV dec(-1) versus RuO2 (72 mV dec(-1)). The potential activity is assigned to the charge transfer at the heterointerfaces, and the synergic effects of the Ni/Co3O4 phases, which possibly will cast light on the design of microscale bifunctional electrocatalysts.
DOI	10.1002/ente.201901310
WOS Keyword	OXYGEN EVOLUTION REACTION ; ENERGY-CONVERSION ; HYDROGEN ; NANOCAGE ; STORAGE
Language	英语
WOS Research Area	Energy & Fuels
Publisher	WILEY-V C H VERLAG GMBH
Citation statistics
Document Type	期刊论文
Identifier	http://ir.sic.ac.cn/handle/331005/28357
Collection	中国科学院上海硅酸盐研究所
Recommended Citation GB/T 7714	Riaz, MS,Zhao, SW,Dong, CL,et al. Spherical Sacrificial ZnO Template-Derived Hybrid Ni/Co3O4 Cubes as Efficient Bifunctional Electrocatalyst for Overall Water Splitting[J]. ENERGY TECHNOLOGY,2020(5).
APA	Riaz, MS,Zhao, SW,Dong, CL,Iqbal, MJ,Zhao, YT,&Huang, FQ.(2020).Spherical Sacrificial ZnO Template-Derived Hybrid Ni/Co3O4 Cubes as Efficient Bifunctional Electrocatalyst for Overall Water Splitting.ENERGY TECHNOLOGY(5).
MLA	Riaz, MS,et al."Spherical Sacrificial ZnO Template-Derived Hybrid Ni/Co3O4 Cubes as Efficient Bifunctional Electrocatalyst for Overall Water Splitting".ENERGY TECHNOLOGY .5(2020).

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