Ding Xiang, Jin Junling, Huang Xiaobing, Zhou Shibiao, Xiao Anguo, Chen Yuandao, Zuo Chenggang
Hunan Province Cooperative Innovation Center for the Construction & Development of Dongting Lake Ecological Economic Zone, College of Chemistry and Materials Engineering, Hunan University of Arts and Science, Changde 415000, Hunan, P. R. China.
ACS Omega. 2019 Sep 16;4(14):16088-16094. doi: 10.1021/acsomega.9b02287. eCollection 2019 Oct 1.
Nanostructured materials with hollow interior voids are gaining great attention due to their fantastic geometries and unique physicochemical properties competent for many applications. However, the development of a fast approach to prepare the hollow structured particles remains challenging. Herein, a new and efficient in situ hard-template method was developed to synthesize hollow carbon nano- and microparticles using the as-prepared SiO particles as a hard template directly, without any separation, drying, or redispersion. In this way, the hollow carbon particles with tunable diameters and shell thickness can be synthesized readily, which is simpler and more efficient than the traditional ones. In addition, the universality of this strategy allows us to study the different behaviors of hollow carbon particles in lithium-sulfur batteries when the architectures of hollow particles (i.e., diameter, shell thickness, etc.) were changed. We believe that this in situ method is applicable for synthesizing other core-shell or hollow structured materials (e.g., metal oxide), and also, the high performance of hollow carbon particles in lithium-sulfur batteries and beyond can be further explored.
具有中空内部空隙的纳米结构材料因其奇妙的几何形状和适用于多种应用的独特物理化学性质而备受关注。然而，开发一种快速制备中空结构颗粒的方法仍然具有挑战性。在此，开发了一种新的高效原位硬模板法，直接使用制备好的SiO颗粒作为硬模板来合成中空碳纳米颗粒和微米颗粒，无需任何分离、干燥或再分散。通过这种方式，可以轻松合成直径和壳厚度可调的中空碳颗粒，这比传统方法更简单、更高效。此外，这种策略的通用性使我们能够研究当中空颗粒的结构（即直径、壳厚度等）发生变化时，中空碳颗粒在锂硫电池中的不同行为。我们相信这种原位方法适用于合成其他核壳或中空结构材料（如金属氧化物），并且，中空碳颗粒在锂硫电池及其他领域的高性能还有待进一步探索。
