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On the electronic conductivity of phospho-olivines as lithium storage electrodes

Nature Materials volume 2, page 702 (2003)Cite this article

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The paper Electronically conductive phospho-olivines as lithium storage electrodes by Chung et al., published in the second issue of this journal1, suggests that the electrode material, LiFePO4, can be doped to reach high electronic conductivity values. This would alleviate the need for the use of carbon as a thin coating, or as an admixture in large amounts of ultrafine powder, in order to reach its electrochemical capacity. We suggest that the effects seen by Chung et al. are due to carbon for low-temperature samples, and to low-valency iron derivatives imparting semimetallic conductivity in samples treated above 750 °C.

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References

  1. Chung, S.-Y., Bloking, J.T. & Chiang, Y.-M. Electronically conductive phospho-olivines as lithium storage electrodes. Nature Materials 1, 123–128 (2002).

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  2. Andersson, A.S., Kalska, B., Haggstrom, L. & Thomas, J.O. Lithium extraction/insertion in LiFePO4: an X-ray diffraction and Mossbauer spectroscopy study. Solid State Ionics 130, 41–52 (2000).

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Authors and Affiliations

  1. Laboratoire International CNRS-UdM, UMR 2289, Université de Montréal, PO Box 6122, Montréal, Québec, Canada

    Nathalie Ravet, Ali Abouimrane & Michel Armand

Authors
  1. Nathalie Ravet
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  2. Ali Abouimrane
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  3. Michel Armand
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Correspondence to Michel Armand.

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Ravet, N., Abouimrane, A. & Armand, M. On the electronic conductivity of phospho-olivines as lithium storage electrodes. Nature Mater 2, 702 (2003). https://doi.org/10.1038/nmat1009a

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