Effect of oxygen deficiency reduction in Mg-doped Mn-spinel on its cell storage performance at high temperature
作者： Michio Takahashi , Toshihiro Yoshida , Akimasa Ichikawa , Kenshin Kitoh , Hiroyuki Katsukawa
DOI: 10.1016/J.ELECTACTA.2006.02.025
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摘要: Abstract The effect of doping foreign metal ions into the LiMn2O4 spinel structure on oxygen deficiency by high-temperature firing has been investigated. degree in Mg- and/or Al-doped is very small even when fired at 1000 °C, and then nearly disappeared after low temperature annealing. Mg-doped Mn-spinels (Li1.05Mn1.94−xMgxCa0.01O4−z, 0 ≤ x ≤ 0.15) obtained 1000 °C contained a amount x-value reached 0.03 or more. annealing 800 °C reduced defect content spinels. crystallinity spinels improved with Ti. storage performance coin-type cell 60 °C about 1.6 times using both Ti-doping, which would be due to stoichiometric solubility high temperatures Ti-doping increase crystallinity.
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