摘要
硅基负极材料具有比容量大的优点,是高容量锂离子电池理想的负极材料。然而硅基材料在循环过程中容量衰减快,影响了其实用性。从硅复合物粉末和硅薄膜两个重要研究方面对硅基负极材料进行了综述,指出在Si基复合负极材料的研究中,单一途径改性提升循环性能的幅度有限,很难达到实用化阶段。硅的纳米化、无定形化、合金化及复合化等方法的综合运用成为硅基材料研究的主导方向。
Silicon based materials are candidate anode materials for lithium-ion battery because of its large specific capacity. But the decay of capacity during cycling restrains the practicability of silicon-based material. Two important research aspects of silicon-based materials are reviewed, including the silicon compounds powder and silicon thin film, and a single modification approach cannot satisfy the practical application is pointed out. So, the comprehensive use of nanocrystallization, amorphization and alloying becomes the main approach in silicon, based anode materials.
出处
《材料导报》
EI
CAS
CSCD
北大核心
2011年第17期140-143,共4页
Materials Reports
基金
高校博士点专项科研基金(20092121110004)
关键词
锂离子电池
硅
负极材料
lithium ion batteries, silicon, anode materials
