Discarded COVID-19 masks-derived-doped porous carbon for lithium-sulfur batteries.

ABSTRACT: Despite the high theoretical capacity and energy density of lithium-sulfur (Li-S) batteries, the development of Li-S batteries has been slow due to the poor electrical conductivity and the shuttle effect of the electrode materials, resulting in low sulfur utilization and fast long-term cycling capacity decay. The modified carbon materials are often used as sulfur hosts to significantly improve the cycling performance of the materials, but also bring high-cost issues. Here, the porous carbon materials are synthesized quickly and conveniently by the microwave cross-linking method using discarded medical masks as carbon sources and concentrated sulfuric acid as solvent. However, poor surface and structural properties limit the application of materials. The porous carbon material is modified w

SUBMITTER: Rong Q 

PROVIDER: S-EPMC9538013 | biostudies-literature | 2022 Sep

REPOSITORIES: biostudies-literature