Zhang Fan, Zhu Wenqiang, Li Tingting, Yuan Yuan, Yin Jiang, Jiang Jianhong, Yang Lishan
Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China), National and Local Joint Engineering Laboratory for New Petrochemical Materials and Fine Utilization of Resources, Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province, Hunan Normal University, Changsha, China.
Hunan Engineering Research Center for Water Treatment Process and Equipment, China Machinery International Engineering Design & Research Institute Co., Ltd., Changsha, China.
Front Chem. 2022 Apr 25;10:889563. doi: 10.3389/fchem.2022.889563. eCollection 2022.
Silicon (Si)-based anode materials have been the promising candidates to replace commercial graphite, however, there are challenges in the practical applications of Si-based anode materials, including large volume expansion during Li insertion/deinsertion and low intrinsic conductivity. To address these problems existed for applications, nanostructured silicon materials, especially Si-based materials with three-dimensional (3D) porous structures have received extensive attention due to their unique advantages in accommodating volume expansion, transportation of lithium-ions, and convenient processing. In this review, we mainly summarize different synthesis methods of porous Si-based materials, including template-etching methods and self-assembly methods. Analysis of the strengths and shortages of the different methods is also provided. The morphology evolution and electrochemical effects of the porous structures on Si-based anodes of different methods are highlighted.
硅基负极材料一直是有望取代商用石墨的候选材料，然而，硅基负极材料在实际应用中存在挑战，包括锂嵌入/脱嵌过程中的大体积膨胀和低本征电导率。为了解决这些应用中存在的问题，纳米结构硅材料，特别是具有三维（3D）多孔结构的硅基材料，因其在容纳体积膨胀、锂离子传输和方便加工方面的独特优势而受到广泛关注。在本综述中，我们主要总结了多孔硅基材料的不同合成方法，包括模板蚀刻法和自组装法。还对不同方法的优缺点进行了分析。重点介绍了不同方法制备的多孔结构对硅基负极的形貌演变和电化学影响。
