Zhu Xiaoyi, Yang Dongjiang, Li Jianjiang, Su Fabing
J Nanosci Nanotechnol. 2015 Jan;15(1):15-30. doi: 10.1166/jnn.2015.9712.
High capacity electrode materials are searched for commercial applications due to the increase in energy density and power density requirements for lithium-ion secondary cells. Silicon has triggered significant research effort because of its low Li-uptake potential and the high theoretical capacity. However, volume changes during cycling cause pulverization and capacity fade, which is an obstacle of the application of silicon as an anode. Here we present a review of research progress on silicon-based anode materials for lithium-ion batteries, focusing on the effects of the morphology and compound on the electrochemical properties. The reasons of poor cycle performance are discussed. It is pointed out that to control the huge volume change and solid electrolyte interface growth during cycling is an effective way to improve the cycle performance. Outlook for the future development of silicon-based composite anode materials for the application of silicon anodes are finally outlined.
由于锂离子二次电池对能量密度和功率密度的要求不断提高，人们正在寻找高容量电极材料用于商业应用。硅因其低锂摄取电位和高理论容量而引发了大量的研究工作。然而，循环过程中的体积变化会导致粉化和容量衰减，这是硅作为阳极应用的一个障碍。在此，我们综述了用于锂离子电池的硅基负极材料的研究进展，重点关注形态和化合物对电化学性能的影响。讨论了循环性能差的原因。指出控制循环过程中的巨大体积变化和固体电解质界面生长是提高循环性能的有效方法。最后概述了用于硅阳极应用的硅基复合负极材料的未来发展前景。
