Abstract
Two types of treatment of the initial mechanical mixture [silicon nanopowder and graphene oxide (GO)] for obtaining Si/RGO nanocomposites were used: reduction in hydrazine vapor and heat treatment at 550°C in an argon atmosphere. It was shown that the type of reduction has an influence on the morphological and electrochemical characteristics of the composites due to the formation of defects and the presence of nitrogen in the graphene network. Less defective and nitrogen doped Si/RGO composites have a better electrochemical behavior as an active material of negative electrode for lithium-ion batteries. The discharge capacity of electrodes based on Si/RGO nanocomposites amounted to 437 mA h g–1 without polymer binder and 1192 mA h g–1 with CMC as a binder.
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ACKNOWLEDGMENTS
This work was performed with financial support from the Ministry of Science and Higher Education of Russian Federation, project ID RFMEFI60419X0235.
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Korchun, A.V., Evshchik, E.Y., Baskakov, S.A. et al. Silicon-Reduced Graphene Oxide Composite as Negative Electrode of Li-Ion Batteries. Russ J Appl Chem 93, 1940–1946 (2020). https://doi.org/10.1134/S1070427220120174
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DOI: https://doi.org/10.1134/S1070427220120174