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Lithium intercalation into CrO3-GIC and its derivatives

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Abstract.

Graphite intercalation compound with chromium trioxide (CrO3-GIC) was used as a precursor for new graphite composites. By heating CrO3-GIC at 800 °C in air a composite material, expanded graphite/Cr2O3, was obtained, whereas further heating of this composite at 1000 °C in the stream of hydrogen/argon mixture led to the reduction of Cr2O3 to chromium carbide (Cr3C2). A new material thus obtained was expanded graphite/Cr3C2 composite. The chromium species having catalytic properties gave rise to the improvement of the crystal structure of expanded graphite. All materials were tested as anode materials for lithium-ion cell. It was found that graphitic material treated in H2/Ag at 1000 °C has greater reversible capacity in comparison to the original graphite and the shape of the charge/discharge curve shows very well-defined stage structure which supports the crystallographic data.

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Acknowledgements.

This work was partially supported from the State Committee for Scientific Research of Poland (KBN Grant No. 3 T09B 068 19).

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Authors and Affiliations

  1. Institute of Chemistry and Technical Electrochemistry, Poznań University of Technology, ul. Piotrowo 3, 60–965, Poznań, Poland

    Jan M. Skowroński

  2. Central Laboratory of Batteries and Cells, ul. Forteczna 12, 61–362 , Poznań, Poland

    Mariusz Walkowiak

Authors
  1. Jan M. Skowroński
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  2. Mariusz Walkowiak
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Correspondence to Jan M. Skowroński.

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Presented at the 3rd International Meeting “Advanced Batteries and Accumulators”, June 16th–June 20th, Brno, Czech Republic

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Skowroński, J.M., Walkowiak, M. Lithium intercalation into CrO3-GIC and its derivatives. J Solid State Electrochem 8, 23–27 (2003). https://doi.org/10.1007/s10008-003-0408-6

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  • DOI: https://doi.org/10.1007/s10008-003-0408-6

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