Abstract
Li/graphite fluoride (GFx) cells have been widely noticed during the past decades due to its highest theoretical capacity in primary lithium batteries, high energy density, long shelf life, safety and a wide operating temperature. However, the low electronic conductivity and discharge potential Li/GFx cells obviously limited its applications. In order to improve the energy performance of Li/GFx cells, an efficient method is to increase the transportation ability of Li+ in cathode. Considering its high specific surface area and large layer spacing, bamboo charcoal is suitable for preparing the cathode materials with highly stored energy. Here, we synthesized the fluorinated bamboo charcoal (FBC) as the novel cathode materials based on gas-solid fluorination. Electrochemical assay show that the lithium/fluorinated bamboo charcoal cells have a novel discharged voltage of 3V versus Li/Li+ electrode, and a special capacity above 750 mAh g-1. The lithium/fluorinated bamboo charcoal cells may be used for new highly stored energy device in the future.
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