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New anode materials of Li1+x V1−x O2 (0 ≤ x ≤ 0.1) for secondary lithium batteries: correlation between structures and properties

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Abstract

Li1+x V1−x O2 (0 ≤ x ≤ 0.1) compounds were studied as the anode materials for a lithium-ion battery. The crystal and electronic structures of the prepared materials were correlated with electrical conductivities and electrochemical properties. The electrochemical behaviors were significantly dependent on the composition of Li1+x V1−x O2, and these were resulted from the perturbation of the local electronic structure arising from the increase in lithium contents in Li1+x V1−x O2 rather than from the slight distortion in the crystal structure. The electrical conductivities of Li1+x V1−x O2 increased with the increase in lithium contents in the compounds. Li1.1V0.9O2 and Li1.075V0.925O2 samples exhibit the first discharge capacities of 250 and 241 mAh g−1 at 0.2 C-rate, respectively.

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Acknowledgments

This work is supported by the Ministry of Knowledge Economy and Korea Institute of Energy Technology Evaluation and Planning (KETEP) for the development of materials and module of kWh-grade energy storage for next generation.

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Authors and Affiliations

  1. School of Materials Science and Engineering, Kyungpook National University, Daegu, 702-701, Korea

    Won-Tae Kim & Yeon Uk Jeong

  2. Department of Chemistry, Chonnam National University, Gwangju, 500-757, Korea

    Hyun Chul Choi

  3. Advanced Batteries Research Center, Korea Electronics Technology Institute, Seongnam, 463-816, Korea

    Young Jun Kim & Jun Ho Song

  4. School of Mechanical Engineering, Kyungpook National University, Daegu, 702-701, Korea

    Ho Lee & Yong Joong Lee

Authors
  1. Won-Tae Kim
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  2. Yeon Uk Jeong
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  3. Hyun Chul Choi
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  4. Young Jun Kim
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  5. Jun Ho Song
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  6. Ho Lee
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  7. Yong Joong Lee
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Correspondence to Yeon Uk Jeong.

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Kim, WT., Jeong, Y.U., Choi, H.C. et al. New anode materials of Li1+x V1−x O2 (0 ≤ x ≤ 0.1) for secondary lithium batteries: correlation between structures and properties. J Appl Electrochem 41, 803–808 (2011). https://doi.org/10.1007/s10800-011-0299-7

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  • DOI: https://doi.org/10.1007/s10800-011-0299-7

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