文献类型：期刊文献

英文题名：Multifunctional NiCo2O4-NC Heterostructure Nanocage Modified Separator for Mitigating the Shuttle Effect and Kinetic Challenges in Lithium-Sulfur Batteries

作者：Zhang, Yankai[1];Yu, Xiaolei[3];Liu, Fan[1];Ma, Yongping[1];Wang, Jitong[1,2,3]

机构：[1]Guangxi Univ, Sch Chem & Chem Engn, Guangxi Key Lab Petrochem Resource Proc & Proc Int, Nanning, Peoples R China;[2]Guangxi Univ, Univ Engn Res Ctr Green Chem New Mat, Sch Chem & Chem Engn, Nanning, Guangxi, Peoples R China;[3]East China Univ Sci & Technol, State Key Lab Green Chem Engn & Ind Catalysis, Shanghai, Peoples R China

年份：2026

卷号：21

期号：2

外文期刊名：CHEMISTRY-AN ASIAN JOURNAL

收录：;EI(收录号：20260419945474);WOS:【SCI-EXPANDED(收录号:WOS:001685953000014)】；

基金：This work is financially supported by the National Natural Science Foundation of China (no. 22178116), the Natural Science Foundation of Shanghai Municipality (no. 22ZR1417400).

语种：英文

外文关键词：adsorption; catalysis; heterostructure; hollow nanocage; lithium-sulfur battery; shuttle effect

摘要：Lithium-sulfur batteries have garnered significant attention from the scientific community due to their intrinsic advantages, including low cost, abundant resources, and high specific energy. However, the shuttle effect of soluble polysulfides and the sluggish redox kinetics of sulfur species have greatly hindered their commercialization and practical application. Herein, we propose a straightforward strategy to construct NiCo2O4-NC heterostructure nanocages, which serve as multifunctional separator modifiers to improve the electrochemical performance of lithium-sulfur batteries. Specifically, nitrogen doping enhances the polarity of the carbon matrix, enabling both physical confinement and chemical anchoring of polysulfide species. Meanwhile, the embedded NiCo2O4 provides abundant catalytic sites that accelerate the redox kinetics of lithium polysulfides. Consequently, the battery assembled with the optimal NiCo2O4-NC-1 modified separator demonstrates an excellent initial capacity of 1017.8 mAh g(-1) at 0.5 C and a remarkable cycling stability with only 0.04% capacity decay per cycle at 2 C. Moreover, NiCo2O4-NC-1 exhibits stable electrochemical behavior under high sulfur loading, highlighting its multifunctional structural advantages. This work provides a viable strategy for designing advanced separators in high-performance lithium-sulfur batteries.