Abstract
By one-step carbonization, sponge-like porous carbon was derived from Ficus Religiosa leaf. The prepared carbon contains large voids, which will be beneficial for the K+-ion intercalation /de-intercalation process. A maximum reversible capacity of 205 mAh.g−1 was obtained at 20 mA.g−1. Further, the porous carbon electrode showed a reversible capacity of 76 mAh.g−1 with 76% capacity retention over 50 cycles at a current density of 50 mA.g−1. Overall, the Ficus Religiosa leaf derived biomass carbon can be a good candidate for K+-ion intercalating electrodes for energy storage devices.
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