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Lithium ion pathways in LiFePO4 and related olivines

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Abstract

Determining ion transport pathways as regions of low bond valence mismatch represents a simple, reliable way of characterizing ion transport pathways in local structure models, provided that the local structure model captures the essential structural features. The examples of LiFePO4 and other olivine-type mixed conductors discussed here demonstrate the impact of structural disorder on the ion transport pathway and mechanism. The effect of Li′Fe antisite defects on the transition from one- to two-dimensional conduction pathway dimensionality as well the possibility of heterogeneous do** of LiFePO4 by a lithium phosphate glass surface layer are discussed in detail.

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Acknowledgements

The financial support by A*Star (NSF/SERC Materials World Network 062 119 0009) is gratefully acknowledged.

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  1. Department of Materials Science and Engineering, National University of Singapore, 7 Engineering Drive 1, E3A #04-02, Singapore, 117574, Singapore

    Stefan Adams

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  1. Stefan Adams
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Correspondence to Stefan Adams.

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Adams, S. Lithium ion pathways in LiFePO4 and related olivines. J Solid State Electrochem 14, 1787–1792 (2010). https://doi.org/10.1007/s10008-010-1012-1

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  • DOI: https://doi.org/10.1007/s10008-010-1012-1

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