The electrochemical behaviour of TiO2 nanotubes with Co3O4 or NiO submicron particles: Composite anode materials for Li-ion micro batteries

The electrochemical performance of self-organized TiO2 nanotubes (TiO2nts) can be improved for lithium-ion microbatteries by depositing submicron Co3O4 and NiO particles. These transition metal oxides were directly grown onto the titania nanotubes by electrodeposition and thermal treatments. The mor...

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Bibliographic Details
Published in:Electrochimica acta 2013-01, Vol.88, p.814-820
Main Authors: Kyeremateng, Nana Amponsah, Lebouin, Chrystelle, Knauth, Philippe, Djenizian, Thierry
Format: Article
Language:English
Subjects:
Anodization
Applied sciences
Chemistry
Composite materials
Conversion reaction
Direct energy conversion and energy accumulation
Electrical engineering. Electrical power engineering
Electrical power engineering
Electrochemical conversion: primary and secondary batteries, fuel cells
Electrochemistry
Electrodeposition
Electrodes
Engineering Sciences
Exact sciences and technology
General and physical chemistry
Li-ion battery
Microorganisms
Nanostructure
Nanotubes
Optics
Particulate composites
Photonic
Scanning electron microscopy
Study of interfaces
Titania
Titanium dioxide
X-rays
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Summary:The electrochemical performance of self-organized TiO2 nanotubes (TiO2nts) can be improved for lithium-ion microbatteries by depositing submicron Co3O4 and NiO particles. These transition metal oxides were directly grown onto the titania nanotubes by electrodeposition and thermal treatments. The morphology and the chemical composition of the resulting materials were characterized by scanning electron microscopy (SEM), Energy-Dispersive X-Ray Spectroscopy (EDS), and X-Ray Diffraction (XRD). The electrochemical nucleation and growth mechanisms of Co and Ni onto TiO2nts are also discussed. Besides the remarkable capacity retention of the nano-architectured titania electrodes in lithium test cells, we show that the addition of submicron Co3O4 or NiO particles leads to a spectacular increase of the capacity values during the first 25 cycles.
ISSN:0013-4686
1873-3859
DOI:10.1016/j.electacta.2012.09.120