Nitrogen, sulfur-codoped micro-mesoporous carbon derived from boat-fruited sterculia seed for robust lithium-sulfur batteries.

ABSTRACT: The diverse textures and tunable surface properties of abundant bioresources offer great opportunities to utilize biochar materials as sulfur hosts for naturally boosting the electrochemical performances of Li-S batteries. Herein, a N, S-codoped micro-mesoporous carbon was synthesized from boat-fruited sterculia seed, and used as a sulfur host matrix for Li-S batteries. After sulfur infiltration (≈62% sulfur) and cell assembly, the obtained S/NSBC cathode shows outstanding discharge-charge performance, good rate capability, and especially long cycling stability. A high initial discharge capacity of 1478 mA h g^-1 was achieved at 0.1C, and the reversible discharge capacity was still retained at 649 mA h g^-1 after 500 cycles at 0.5C with ultralow decay rate of 0.08% per

SUBMITTER: Wu J 

PROVIDER: S-EPMC9064315 | biostudies-literature | 2019 May

REPOSITORIES: biostudies-literature