INDUCED ELECTRODEPOSITION OF AMORPHOUS MOLYBDENUM (IV) OXIDE FILM BY Ni2+ AND ITS ABILITY OF LITHIUM STORAGE

Changwei Su, Mengchao Ye, Yang Bai, Jianping Hou and Junming Guo
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Changwei Su: School of Chemistry and Environment, Yunnan Minzu University, Kunming, Yunnan 650500, P. R. China2Engineering Research Center of Biopolymer Functional, Materials of Yunnan, Yunnan Minzu University, Kunming, Yunnan 650500, P. R. China
Mengchao Ye: School of Chemistry and Environment, Yunnan Minzu University, Kunming, Yunnan 650500, P. R. China2Engineering Research Center of Biopolymer Functional, Materials of Yunnan, Yunnan Minzu University, Kunming, Yunnan 650500, P. R. China
Yang Bai: School of Chemistry and Environment, Yunnan Minzu University, Kunming, Yunnan 650500, P. R. China2Engineering Research Center of Biopolymer Functional, Materials of Yunnan, Yunnan Minzu University, Kunming, Yunnan 650500, P. R. China
Jianping Hou: School of Chemistry and Environment, Yunnan Minzu University, Kunming, Yunnan 650500, P. R. China2Engineering Research Center of Biopolymer Functional, Materials of Yunnan, Yunnan Minzu University, Kunming, Yunnan 650500, P. R. China
Junming Guo: School of Chemistry and Environment, Yunnan Minzu University, Kunming, Yunnan 650500, P. R. China2Engineering Research Center of Biopolymer Functional, Materials of Yunnan, Yunnan Minzu University, Kunming, Yunnan 650500, P. R. China

Surface Review and Letters (SRL), 2017, vol. 24, issue 05, 1-9

Abstract: Amorphous molybdenum oxide films with almost 20μm thickness are electrodeposited on the Cu foils from a citrate-ammonia molybdate bath containing Ni2+ ions. The content of Ni in the oxide films is very low, 0.87 at.%. XRD and FTIR data suggest that they are composed of hydrous MoO2. The multilayer and cracked structures are characterized by scanning electron microscopy (SEM), and are beneficial to transmission of Li+ ions between the electrolyte and anode materials. Galvanostatic battery testing shows that amorphous molybdenum (IV) oxides as anodes for lithium-ion batteries exhibit a high specific capacity of 876mA⋅h⋅g−1 at a current density of 50mA⋅g−1, good capacity retention as high as 97.4% after 20 cycles.

Keywords: Electrodeposition; molybdenum oxide; MoO2; lithium-ion battery (search for similar items in EconPapers)
Date: 2017
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DOI: 10.1142/S0218625X17500706

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