TiO2, mainly known for photocatalysis, has also been studied as a safer anode material for lithium ion batteries compared to graphite, while with the limited lithium ion diffusion within the host and the structural distortion during lithium insertion/extraction. Here, we demonstrate that a thin layer of hydrogenated surface disorder on the crystalline TiO2 electrode may induce better electrochemical energy storage performance, better charge/discharge rate performance, larger capacity and longer stability. The reasons for these improvements are proposed in terms of the facilitation of easier lithium ion transport within the disordered layer and the less structural distortion during the lithium insertion/extraction process.

Surface-disordered hydrogenated TiO<sub>2</sub> nanocrystals for lithium ion battery

245th National Meeting (2013)

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Surface-disordered hydrogenated TiO2 nanocrystals for lithium ion battery

Surface-disordered hydrogenated TiO₂ nanocrystals for lithium ion battery