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Preparation of biomass based carbon-sulfur composite cathodes in lithium sulfur batteries
Initially, preparation of biomass based carbons was initially conducted by hydrothermal
carbonization. As-prepared porous carbons were then utilized together with sulfur to form
carbon-sulfur composites by using melt diffusion method. The resulted composites were then
tested as cathodes for lithium sulfur battery. At current density of 0.5 C, the composite cathodes
showed the best electrochemical performance by delivering specific capacity at the first cycle of
1006 mAh-1 and maintaining a capacity of 700 mAh-1 after 100 cycles, which shows its
promising prospect as sulfur cathode in lithium sulfur battery.
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