Quantitative analysis of cation mixing and local valence states in LiNixMn2-xO4 using concurrent HARECXS and HARECES measurements.

Yu Yamamoto,Kunimitsu Kataoka,Junji Akimoto,Kazuyoshi Tatsumi, Takashi Kousaka, Jun Ohnishi,Teruo Takahashi,Shunsuke Muto

Microscopy（2016）

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摘要

Cation mixing in positive electrode materials for rechargeable lithium ion batteries, LiNixMn2−xO4 (x = 0, 0.2, 0.5) and Li0.21Ni0.7Mn1.64O4−δ (denoted as x = 0.7), is analyzed by high-angular-resolution electron-channeling X-ray/electron spectroscopy (HARECXS/HARECES) techniques, using energy-dispersive X-ray spectroscopy and electron energy-loss spectroscopy. Mixing between the tetrahedral lithi...

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关键词

lithium ion secondary batteries,positive electrode materials,cation mixing,site-specific EELS,electron channeling,multiple linear regression

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