Bagasse as a carbon structure with high sulfur content for lithium-sulfur batteries.

ABSTRACT: A bagasse-based 3D carbon matrix (BC) with high specific surface area and high conductivity was obtained by carbonization and pore-forming processes with bagasse as the carbon precursor and K₂FeO₄ as the pore-former. The microporous structure and nitrogenous functional groups were determined in the prepared carbon matrix, which could allow high sulfur loading and improve the polysulfide absorption capacity during cycling. After sulfur infusion, the S/BC composite with 68.8% sulfur content was obtained. The lithium-sulfur (Li-S) battery with the S/BC cathode shows high specific capacity and good cycling performance. It delivers a specific capacity of 1360 mA h g^-1 at 0.2C and remains at 790 mA h g^-1 after 200 cycles. At 1C, the Li-S with this comp

SUBMITTER: Ma J 

PROVIDER: S-EPMC9056595 | biostudies-literature | 2020 Sep

REPOSITORIES: biostudies-literature