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Issue 46, 2013
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Understanding the fast lithium storage performance of hydrogenated TiO2 nanoparticles

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Abstract

Anatase TiO2 is considered as one of the promising anode materials for lithium ion batteries (LIBs) because of its nontoxicity, safety, and excellent capacity retention. However, the poor rate capability of TiO2 electrodes, caused by the low electrical conductivity and lithium diffusion coefficient, strongly hinders its practical application in high power LIBs. Herein, we report on the fast lithium storage performance of hydrogenated anatase TiO2 nanoparticles (H-TiO2) prepared by a H2 plasma treatment. The scan-rate dependence of the cyclic voltammetry (CV) analysis reveals that the improved rate capability of H-TiO2 results from the enhanced contribution of pseudocapacitive lithium storage on the particle surface. Combined with the structural properties of H-TiO2, it is suggested that the disordered surface layers and Ti3+ species of H-TiO2 play an important role in the improvement of pseudocapacitive lithium storage. The results help to understand the fast lithium storage performance of H-TiO2 and might pave the way for further studies of other hydrogenated metal oxide electrodes for high power LIBs.

Graphical abstract: Understanding the fast lithium storage performance of hydrogenated TiO2 nanoparticles

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Publication details

The article was received on 02 Sep 2013, accepted on 08 Oct 2013 and first published on 09 Oct 2013


Article type: Paper
DOI: 10.1039/C3TA13491A
Citation: J. Mater. Chem. A, 2013,1, 14507-14513
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    Understanding the fast lithium storage performance of hydrogenated TiO2 nanoparticles

    Y. Yan, B. Hao, D. Wang, G. Chen, E. Markweg, A. Albrecht and P. Schaaf, J. Mater. Chem. A, 2013, 1, 14507
    DOI: 10.1039/C3TA13491A

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