烟台大学学报（自然科学与工程版）2024，Vol.37Issue(2)：213-222,10.DOI:10.13951/j.cnki.37-1213/n.230502
基于Co-N-C改性隔膜的高性能锂硫电池
High Performance Lithium-Sulfur Batteries Enabled by Co-N-C Modified Separators
摘要
Abstract
A leaf-like cobalt-embedded nitrogen-doped carbon material(Co-N-C)is successfully synthesized and then modified on the commercial separator for Li-S batteries.The Co nanoparticles are uniformly dispersed in the prepared Co-N-C.With a large surface area and amounts of micropores,Co-N-C materials provide more active sites to trap soluble polysulfides in the cathode and effectively inhibit the shuttle effect caused by the dissolution of poly-sulfides.Meanwhile,the micro-nano structure in N-doped carbon is beneficial to accelerate ion transport and en-hance the redox reaction kinetics.Benefitting from the integrated adsorption-catalyzing effect,the Li-S cell con-structed with a Co-N-C modified separator exhibits a high capacity of 1408 mAh/g and excellent cycling stability(a low capacity fading rate of 0.05%per cycle after 400 cycles at 1 C).关键词
锂硫电池/改性隔膜/穿梭效应/催化转化Key words
lithium-sulfur battery/modified separator/shuttle effect/catalytic conversion分类
信息技术与安全科学引用本文复制引用
崔洪涛,王哲,曾涛,李婧,冯咏梅..基于Co-N-C改性隔膜的高性能锂硫电池[J].烟台大学学报（自然科学与工程版）,2024,37(2):213-222,10.基金项目
山东省重大科技创新工程项目(2019JZZY010908) （2019JZZY010908）
山东省自然科学基金资助项目(ZR2021ME113). （ZR2021ME113）
