Self-Assembled Ultrathin Anatase TiO2 Nanosheets with Reactive (001) Facets for Highly Enhanced Reversible Li Storage
Sneha Kulkarni a, Fang Yanan a, Sudip K Batabyal a, Srinivasan Madhavi a, Vanchiappan Aravindan a, Huu Loc Nguyen a, Rajiv Ramanujam Prabhakar a
a Nanyang Technological University, Energy Research Institute @ NTU (ERI@N) Research TechnoPlaza, 5th Storey 50 Nanyang Drive, Singapore 637553, singapore, 637553
International Conference on Hybrid and Organic Photovoltaics
Proceedings of 6th International Conference on Hybrid and Organic Photovoltaics (HOPV14)
Ecublens, Switzerland, 2014 May 11th - 14th
Organizers: Michael Graetzel and Mohammad Nazeeruddin
Poster, Huu Loc Nguyen, 240
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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