Abstract Changes in Ti K-edge X-ray absorption fine structure (XAFS) spectra of lithium titanium oxide (LTO) during the charge discharge cycle of lithium ion battery were investigated by using a specially designed cell for in situ X-ray measurement. Thought LTO is famous for zero-strain lattice during the charge/discharge cycle, the significant spectral changes might be attributed to Li migration in the lattice. The experimental results were compared with the theoretical simulation, and the spectral changes were caused both by the slight changes in oxygen position parameter that affected titanium neighbors and Li migration.

中文翻译：

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Ti K-edge XAFS研究在充放电循环下锂钛氧化物负极材料中的锂迁移

摘要 采用专门设计的原位 X 射线测量电池，研究了锂离子电池充放电循环过程中钛酸锂 (LTO) 的 Ti K 边 X 射线吸收精细结构 (XAFS) 光谱的变化。认为 LTO 以充电/放电循环期间的零应变晶格而闻名，显着的光谱变化可能归因于晶格中的锂迁移。将实验结果与理论模拟进行比较，光谱变化是由影响钛邻居和锂迁移的氧位置参数的微小变化引起的。