报告题目：二维金属相MoS2在锂硫电池中的应用
报告人：李庄男
主持人（邀请人）：毛慧灿
报告时间：2026年8月7日14:00—15:00
报告地点：唐敖庆楼D429
主办单位：汽车材料教育部重点实验室 色色啦
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摘要：
Lithium-sulfur (Li–S) batteries are promising next-generation energy storage systems owing to their high theoretical energy density and low cost. However, their practical deployment is limited by poor sulfur utilization under lean electrolyte conditions and rapid capacity decay caused by polysulfide shuttling. In this talk, I will demonstrate that metallic 1T phase molybdenum disulfide (1T MoS2) can simultaneously address these challenges while enabling practical implementation. Compared with the semiconducting 2H phase, metallic 1T MoS2 exhibits high electrical conductivity and strong polysulfide affinity. Pre-lithiation further enhances polysulfide adsorption, ionic transport, and conversion kinetics, enabling efficient sulfur redox reactions even under lean electrolyte conditions. As a result, Li–S pouch cells achieve sulfur utilization above 85% and energy densities of 441 Wh kg-1 and 735 Wh L-1. In addition, the Lewis acidity of 1T MoS2 induces the in situ formation of a quasi-solid-state electrolyte via ring-opening polymerization of 1,3-dioxolane, forming a polymer matrix that effectively suppresses polysulfide shuttling while maintaining efficient electrochemistry. The resulting pouch cells retain 80.7% capacity after 200 cycles and exhibit improved thermal and mechanical robustness. Complementing these advances, recent progresses in scalable synthesis enable rapid production of nearly pure-phase metallic MoS2 nanosheets at industrially relevant throughput, providing a practical pathway to translate metallic MoS2 from laboratory concepts to high-performance energy storage systems.
个人简介：
李庄男，浙江大学百人计划研究员，博士生导师，国家高层次青年人才。2020年博士毕业于伦敦大学学院，随后加入剑桥大学从事研究工作，先后任博士后研究助理，国王学院青年研究员，Herchel Smith特聘研究员。2025年入职浙江大学化学工程与生物工程学院。研究方向聚焦于下一代储能技术的开发及其材料设计，在Nature Energy （2篇），Nature Materials，Nature Chemical Engineering等期刊发表论文40余篇，获授权发明专利4项。基于核心技术成立初创公司，完成逾4000万元融资用于产业化，获得英国广播公司（BBC）等多家国际主流媒体报道。担任材料研究学会MRS Energy & Sustainability期刊副主编，Interdisciplinary Materials编委。
