Abstract
We have prepared and characterized lithium titanate-based anode materials, Li4Ti5O12/C and Li4Ti5O12/C/Ag, using polyvinylidene fluoride as a carbon source. The formation of such materials has been shown to be accompanied by fluorination of the lithium titanate surface and the formation of a highly conductive carbon coating. The highest electrochemical capacity (175 mAh/g at a current density of 20 mA/g) is offered by the Li4Ti5O12-based anode materials prepared using 5% polyvinylidene fluoride. The addition of silver nanoparticles ensures a further increase in electrical conductivity and better cycling stability of the materials at high current densities.
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Original Russian Text © I.A. Stenina, A.N. Sobolev, A.A. Kuz’mina, T.L. Kulova, A.M. Skundin, N.Yu. Tabachkova, A.B. Yaroslavtsev, 2017, published in Neorganicheskie Materialy, 2017, Vol. 53, No. 10, pp. 1063–1069.
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Stenina, I.A., Sobolev, A.N., Kuz’mina, A.A. et al. Electrochemical properties of Li4Ti5O12/C and Li4Ti5O12/C/Ag nanomaterials. Inorg Mater 53, 1039–1045 (2017). https://doi.org/10.1134/S0020168517100144
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DOI: https://doi.org/10.1134/S0020168517100144