Cooperative enhancement of capacities in nanostructured SnSb/carbon nanotube network nanocomposite as anode for lithium ion batteries

• Main Authors: Sun, Ting, Fan, Shufen, Rui, Xianhong, Yan, Qingyu, Hng, Huey Hoon
• Other Authors: School of Civil and Environmental Engineering
• Format: Article
• Language: English
• Published: 2013
• Online Access: https://hdl.handle.net/10356/95914; http://hdl.handle.net/10220/11367
• Institution: Nanyang Technological University

SnSb-carbon nanotube nanocomposites are prepared by mixing melt-spun nanocrystalline SnSb with carbon nanotubes. The composite with 10 wt% acid functionalized CNTs shows a good initial Coulombic efficiency of 79% and a reversible capacity of 860 mAhg−1 during the 40th cycle at a current density of 160 mAg−1. Apart from that, the composite also shows promising capacities at high C rates. The enhancement is attributed to the synergistic effect between the nanocrystalline SnSb alloy and the CNT scaffold, which buffers the pulverization process and facilitates fast lithium ions diffusion.