Preparation and Electrochemical Performance of Li₄Ti₅O₁₂/SnO₂ Composite as an Anode of Lithium-Ion Batteries

Abstract:

Li₄Ti₅O₁₂/SnO₂ composite with different SnO₂ contents were prepared by hydrothermal method. SnO₂ nanosheets were in situ formed on the surface of Li₄Ti₅O₁₂ nanoparticles. At the same time, Sn ions were doped into the Li₄Ti₅O₁₂ lattice, which effectively improved the conductivity of Li₄Ti₅O₁₂. When the content of SnO₂ was 8 %, the electrochemical performance of Li₄Ti₅O₁₂/SnO₂ composite was the best. The first discharge specific capacity was 480.54 mAh/g. The capacity remained at 276.8 mAh/g after 200 cycles at 0.1 A/g, and the capacity retention was as high as 87.4% (compared with the 10th cycle).

• Periodical: Solid State Phenomena (Volume 330)
• Pages: 139-144
• DOI: https://doi.org/10.4028/p-92i62s
• Online since: April 2022
• Authors: Ming Wang*, Liang Du, Peng Fei Fang, Hong Ling Bao, Jun Tao Huang
• Keywords: Electrochemical Performance, Li₄Ti₅O₁₂/SnO₂ Composite, Lithium-Ion Battery

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