A novel preparation method for NiCo2O4 electrodes stacked with hexagonal nanosheets for water electrolysis
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In this paper, we describe the preparation of a porous nanosheet-stacked NiCo2O4 composite electrode using a novel electrophoretic deposition (EPD) calcination method. The effects of the deposition time and voltage, and of the calcination temperature have been investigated. The microstructure of the deposited films in the electrodes before and after calcination has also been investigated. The electrocatalytic properties of the electrodes have been investigated using cyclic voltammetry and polarization curves. The electrode films produced using this new technique have a porous structure composed of stacked hexagonal NiCo2O4 nanosheets. The resulting electrodes exhibit good electrocatalytic properties for water electrolysis.
Keywordselectrophoretic deposition hexagonal nanosheet NiCo2O4 spinel water electrolysis
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The authors acknowledge financial support from the National High Technology Research and Development Program of China (863 Program) (Grant number: 2002AA332060), the National Natural Science Foundation of China (NSFC) (Grant number: 50372029) and the National Natural Science Foundation of China (NSFC) (Grant number: 50572051). The authors thank Prof. Andy Godfrey for his valuable discussions and suggestions.
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