Aramid Fiber/MWCNTs conductive paper collector improves the performance of SnO2 lithium-ion batteries

• Published in: Vacuum 2019-08, Vol.166, p.292-297
• Main Authors: Guodong, Liang, Xiaogang, Sun, Jiamei, Lai, Chengcheng, Wei, Yapan, Huang, Hao, Hu
• Format: Article
• Language: English
• Subjects: Aramid; Carbon nanotube; Lithium-ion batteries; SnO2; Specific capacity
• ISSN: 0042-207X; 1879-2715
• DOI: 10.1016/j.vacuum.2019.04.052

Aramid carbon nanotube conductive papers (ACP) were prepared by using multi-walled carbon nanotubes as conductive agent and aramid fiber as the matrix. The ACP were used as the anode current collector of SnO2 lithium ion batteries (LIBs) instead of copper foil. The structure was characterized by X-ray diffraction analysis (XRD), Raman spectroscopy, transmission electron microscopy (TEM) and scanning electron microscopy (SEM). The electrochemical performance was characterized by Galvanostatic charge-discharge test. As a result, the ACP performed better than copper foil. After 60 cycles at a current density of 100 mA/g, the specific capacity can be maintained at 876 mAh/g, and the SnO2/ACP electrode exhibited excellent rate performance. •Preparation of aramid-carbon nanotube conductive paper as the current collector instead of copper foil of SnO2 material.•The active material SnO2 is pressed into the aramid fiber and carbon tube structure by hot pressing process to improve the interfacial properties between them.•The prepared paper aramid-carbon nanotube conductive paper has both excellent mechanical properties of aramid paper and electrical conductivity of carbon tubes.•SnO2 lithium-ion battery exhibits excellent electrochemical performance and maintains good specific capacity.