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

Nature Materials volume 2, pages 702–703 (2003)Cite this article

Chung et al replies

The 'reproduced' experiments by Ravet et al.1 have, on closer reading, clear differences in procedure from ours2. They do not observe increased conductivity on attempted doping, and therefore attribute our results2 to a variety of conductive secondary-phase artefacts.

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Figure 1: Discharge curves at various current rates for Li0.99Zr0.01FePO4 cathode tested in a lithium half cell5.

References

  1. Ravet, N., Abouimrane, A. & Armand, M. Caveat emptor. Nature Materials 2, 702 (2003).

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  2. 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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  3. Ravet, N. et al. Improved iron based cathode material. Abstract No. 127, Electrochemical Society Fall meeting, Honolulu, Hawaii (1999).

  4. Chung, S.-Y. & Chiang, Y.-M. Microscale measurements of electrical conductivity in doped LiFePO4 . Electrochem. Solid State Lett. in the press.

  5. Bloking, J.T. SM thesis, MIT, February 2003; Chiang, Y.-M. et al. presented at The International Battery Association and 5th Hawaii Battery Conference Ernest B. Yeager Memorial Symposium, Waikoloa, Hawaii, 7–10 January, 2003, and the 20th International Seminar and Exhibit on Primary and Secondary Batteries, Fort Lauderdale, Florida, 17–20 March, 2003.

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  1. Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, 02139, Massachusetts, USA

    Sung-Yoon Chung, Jason T. Bloking & Yet-Ming Chiang

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  1. Sung-Yoon Chung
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Correspondence to Yet-Ming Chiang.

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Chung, SY., Bloking, J. & Chiang, YM. On the electronic conductivity of phospho-olivines as lithium storage electrodes. Nature Mater 2, 702–703 (2003). https://doi.org/10.1038/nmat1009b

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