阳极
聚丙烯腈
纳米纤维
材料科学
碳纳米纤维
碳化
电化学
锂(药物)
化学工程
静电纺丝
氯化物
碳纤维
纳米技术
电极
碳纳米管
化学
复合材料
聚合物
冶金
扫描电子显微镜
物理化学
内分泌学
工程类
复合数
医学
作者
Yu Chen,Yuanliang Yan,Gang Sun,Wei Liu,Min Ma,Huimin Zhou,Liang Cheng,Hualong Zhang,Xia Xin
出处
期刊:Journal of electrochemical energy conversion and storage
[ASME International]
日期:2021-06-15
卷期号:18 (3)
摘要
Abstract The major obstacle prohibiting the practical application of Sn-based anodes is drastic volume variation during cycling processes. Here, polyacrylonitrile (PAN) was acted as a carbon source, and stannic chloride pentahydrate (SnCl4·5H2O) and antimony chloride (SbCl3) were used as SnSb precursors. SnSb/C nanofibers were prepared via simple electrospinning, deep cryogenic treatment, and carbonization, and it is applied in anode materials for lithium-ion batteries (LIBs) to achieve excellent cycle performance (115.5% capacity retention for 100 cycles). The improvement of electrochemical performance is mainly attributed to the synergistic effect of deep cryogenic treated special SnSb/C nanofibers precursor. In the deep cryogenic treatment process, the crystalline water in the precursor has a pore-forming effect, and the porous nanofiber structure leads to the phenomenon of capacity increase. The above results indicate that comprehensive consideration of deep cryogenic treatment and nanofiber precursors is a new idea to enhance the electrochemical performance of LIBs anode materials.
科研通智能强力驱动
Strongly Powered by AbleSci AI