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The nominal LiMn 2 O 4 and Li-doped spinels with different oxygen stoichiometry were prepared and investigated for capacity fading upon cycling at elevated temperatures. The discharge plateau at 3.2V originating from oxygen defects in manganese spinels is observed to grow very quickly to nearly a maximum scale in initial 15 cycles at 60°C. Meanwhile, the majority of capacity fading...
A series of cathode spinel materials with the nominal composites Li 1+x Mn 2-x O 4-z have been studied with respect to capacity fading at room temperature upon cycling, both before and after elevated temperature storage. It was found that capacity fading is closely related to oxygen defect degree. The greater the oxygen deficiency, the poorer the...
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