The spinel phase, Li2CoMn3O8 , can be used as a cathode in secondary lithium batteries, Li/LiPF6 ,propylene carbonate/Li2CoMn3O8 , with a discharge capacity of ca. 40 mAh g–1 at 5.0 V increasing to ca. 130 mAh g–1 at 3.8 V. This appears to be the first single cell system to operate reversibly over 5 volts.
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Kawai et al. (1998) studied this question.
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