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Several 18650 lithium-ion batteries using LiCoO 2 , LiMn 2 O 4 , and LiFePO 4 as cathode materials were assembled separately. Gas species of these batteries under normal cycling and overcharging to 4.5 and 5.0V conditions were examined by means of GC–MS method. Under the normal charge and discharge voltage range, it is found that gas components are independent to the...
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