硫化锰/碳复合材料的制备及储锂性能研究——推荐一个综合化学实验

Preparation of Manganese Sulfide/Nitrogen, Sulfur Co-Doped Carbon Matrix for Electrochemical Li-Storage—A Recommended Comprehensive Chemical Experiment

摘要: 以二维锰基配位化合物为模板，通过热处理和硫化方法合成了硫化锰纳米粒子锚定在氮、硫共掺杂碳片的复合材料(MnS-NSC)。利用X射线粉末衍射仪、光电子能谱仪等进行结构表征，利用电化学工作站、充放电仪等进行锂离子电池性能测试。该MnS-NSC复合材料具有结构稳定、活性位点多、导电性能好、离子扩散速度快的优点。作为锂离子电池负极材料，展现出优异的储锂性能，包括稳定的循环性能和高的倍率性能。该综合化学实验内容丰富、数据充分，涵盖纳米材料制备、大型仪器表征、电化学性能测试等多个环节，覆盖范围广，可有效拓宽学生的理论和实践技能，提高相关知识储备，培养科研创新能力，提升综合素养。

Abstract: A heterostructured composite with small MnS nanoparticles dispersed and anchored on nitrogen, sulfur-doped carbon sheets (MnS-NSC) had been synthesized through an annealing and sulfuration route with manganese-based coordination framework as a template. The structure was characterized by X-ray powder diffractometer and photoelectron spectroscopy, and the lithium storage performance was tested by electrochemical workstation, etc. The MnS-NSC composite has stable structure, multiple active sites, good conductivity and fast ion diffusion rate. As a negative electrode material for lithium-ion battery, it has excellent lithium storage performance, cycle stability and rate performance. The comprehensive chemistry experiment is rich in content and sufficient data, such as preparation and characterization of nanomaterials, electrochemical performance testing, which can effectively broaden students’ theoretical and practical skills, improve the relevant knowledge reserve, cultivate research and innovation ability, and improve comprehensive literacy.