Proceedings of 6th International Conference on Hybrid and Organic Photovoltaics (HOPV14)
Publication date: 1st March 2014
We made an attempt to employ highly exposed (001) facets of anatase phase TiO2 nanosheets by a conventional hydrothermal approach and subsequently assembled them together as a stack to increase the Li-ion reversibility. A half-cell assembly is conducted to evaluate the Li-storage properties of self-assembled and asprepared (non-assembled) TiO2 nanosheets of (001) facets. It was found that 0.65 moles of Li per formula unit were reversible, with very little irreversible capacity loss, in the initial cycle. The non-assembled (as-synthesized) TiO2 nanosheets delivered a slightly lower irreversible capacity compared to the self-assembled TiO2 nanosheets. Both self-assembled and non-assembled TiO nanosheets experienced a mild capacity fade during cycling. Apart from this fade, the observed values are among the best ones reported on such reactive facets for Li-ion battery anodes. The high reversible capacity of the above TiO2 nanosheets certainly opens new avenues for the development of high-performance insertion-type anodes with reactive facets.
Self-Assembled Ultrathin Anatase TiO2 Nanosheets with Reactive (001) Facets for Highly Enhanced Reversible Li Storage Loc H Nguyen, Vanchiappan Aravindan, Sneha A Kulkarni, Fang Yanan, Rajiv Ramanujam Prabhakar, Sudip K Batabyal, Srinivasan Madhavi CHEMELECTROCHEM. doi: 10.1002/celc.201300121
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