Details

Autor(en) / Beteiligte

• Lu, Haoqi
• Chen, Weilun
• Liu, Qiaoyun
• Pang, Chunlei
• Xue, Lihong
• Zhang, Wuxing

Titel

Si/Cu3Si@C Composite Encapsulated in CNTs Network as High Performance Anode for Lithium Ion Batteries

Ist Teil von

• Journal of Wuhan University of Technology. Materials science edition, 2019-10, Vol.34 (5), p.1055-1061

Ort / Verlag

Wuhan: Wuhan University of Technology

Erscheinungsjahr

2019

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Si/Cu 3 Si@C composites encapsulated in CNTs network (SCC-CNTs) were synthesized via the combination of ball-milling and CVD methods. SCC-CNTs consist of conductive Cu 3 Si, amorphous carbon layer, cross-linked CNTs, and the etched pores, which can play the synergistic effects on the improvement of electronic conductivity and Li + diffusion. The volume expansion of Si anode is also suppressed during the electrochemical process. The SCC-CNTs composites demonstrate a remarkably improved electrochemical performance compared with pure Si, which can deliver a discharge capacity of 2 171 mAh·g −1 at 0.4 A·g −1 with ICE of 85.2%, and retain 1 197 mAh· g −1 after 150 cycles. This work provides a facile approach to massively produce the high-performance Si-based anode materials for next-generation LIBs.