Electrochemical property studies of carbon nanotube films fabricated by CVD method as anode materials for lithium-ion battery applications. (February 2015)

• Record Type: Journal Article
• Authors: Gao, Hongxu; Hou, Feng; Zheng, Xuerong; Liu, Jiachen; Guo, Anran; Yang, Deming; Gong, Yuxuan
• Is Part Of: Vacuum. Volume 112(2015)
• Page Start: 1
• Page End: 4
• Publication Date: 2015-02
• Subjects: Carbon nanotubes -- Free-standing -- Continuous film -- Flexible electrode -- Lithium-ion batteries; Vacuum -- Periodicals; 621.55
• DOI: 10.1016/j.vacuum.2014.10.017
• Languages: English
• ISSNs: 0042-207X

Abstract

Abstract: Carbon nanotube films (CNT-1 and CNT-2) were fabricated in a vertical CVD gas flow reactor with water sealing. CNT-1 films consist of ordered crystalline carbon nanotubes, while CNT-2 are defective carbon nanotube films. The films are flexible and transferrable and can be used as binder-free anodes for lithium-ion batteries (LIB). Electrochemical measurements show that CNT-2 possess a reversible capacity of 452 mA h g −1 under a current density of 30 mA g −1, which is higher than that of CNT-1 (375 mA h g −1 ) under the same current density. In addition, the CNT-2 shows a reversible capacity of 107.9 mA h g −1 after 500 cycles at a current density of 3000 mA g −1, while 82.1 mA h g −1 for CNT-1 under the same condition. Good correlations between morphological factors, defective structure and electrochemical performance are observed. Highlights: As-synthesized carbon nanotube films are continuous and free-standing. The films can be used as flexible, binder-free electrode for lithium-ion battery. Defective carbon nanotube is favorable to enhance reversible capacity of CNT film.