<Abstrate>

The commercial Li₄Ti₅O₁₂ (LTO) is successfully modified by SrF₂ via a low

temperature coprecipitation process. The results indicate that Sr²⁺ and F⁻ 

do not co-dope into the bulk phase of the LTO, but instead form a SrF₂ coating

layer on the surface of the LTO. The suitable SrF₂ buffer layer could cover the

catalytic active sites of the LTO and suppress the electrolyte reduction

decomposition on the surface of the LTO, which means that the SrF₂ 

modification is favorable to suppress gas generation of the LIBs using LTO

as anode material during charge/discharge cycles and storage. Moreover,

according to optimized the amount of SrF₂, the 2 wt% of SrF₂ in the SrF₂

modified LTO composites exhibits the best rate capability and an excellent

cyclic performance.
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