锑基化合物/复合物微纳米材料的可控制备及相关特性研究

锑基化合物（氧化锑、硫化锑等）是一类重要的V-VI主族化合物，在能源转换及存储领域展现出优异的性能。锑基化合物具有高的理论比容量，是一类非常有潜力的锂离子、钠离子电池负极材料；此外，锑的硫化物具有合适的能带结构，是非常有前景的半导体功能材料。尽管锑基化合物具有这些巨大的应用潜能，但是还存在导电率低、活性位点少、稳定性差等缺陷。构建锑基化合物的纳米材料及其复合材料是解决这些缺陷的有效途径，有望提高其能量转换效率和储能性能。因此，本项目在课题组前期工作基础上，拟制备出形貌可控的锑基化合物微纳米材料及其复合物，探索形貌、表面修饰、碳材料复合等对其能源转换和储存性能的影响，进一步揭示其能源转换和存储机制，为高性能锑基化合物的设计合成与性能调控提供实验和理论依据。

As important members of V-VI group compounds, antimony-based compounds (including oxide, sulfide, et al.) have exhibited excellent performance in energy conversion and storage fields. With high theoretical capacity, antimony-based compounds are promising anode materials for rechargeable lithium ion and sodium ion batteries. On the other hand, with suitable band gap, antimony-based compounds are also promising candidates for functional semiconductors. Although antimony-based compounds exhibit great application potential, there remain some problems to be resolved, including low conductivity, limited active sites and poor stability, etc. Constructing micro/nano antimony-based compounds and composited materials is an effective approach to address these issues. In this project, based on our previous work, we will synthesize antimony-based compounds mirco/nano materials with different morphology, explore the effect of the dimensions, size, surface modification and carbon hybridization on their energy conversion and storage performance, and reveal their storage conversion and storage mechanism, providing the experimental and theoretical basis for the design and synthesis of high-performance antimony-based micro/nano materials.