A tin(iv) oxides/carbon nanotubes composite with core-tubule structure as an anode material for high electrochemistry performance LIBs. Issue 24 (10th April 2018)

• Record Type: Journal Article
• Authors: Ji, Yu; Li, Li; Zhenyu, Yang; Jianxin, Cai
• Is Part Of: RSC advances. Volume 8:Issue 24(2018)
• Page Start: 13186
• Page End: 13190
• Publication Date: 2018-04-10
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c8ra00346g
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : SnO2 /CNTs composites with core-tubule structure are prepared by a facile wet chemical method. Abstract : SnO2 /CNTs composites with core-tubule structure are prepared by a facile wet chemical method. The investigation of electrochemical characteristics of the SnO2 /CNTs composites shows that the composites exhibit some advantages, such as stable core-tubule structure, small particle size of SnO2, low electron-transfer resistance and faster lithium ion migration speed. The final product synthesized under optimized conditions can release a stable capacity of about 743 mA h g −1 after 100 cycles at the current density of 0.4 A g −1, 598 mA h g −1 after 500 cycles at the current density of 4 A g −1 . Even at a super high current density of 8 A g −1, the composite can still deliver a steady capacity of 457 mA h g −1, and the discharge capacity can be restored to 998 mA h g −1 when current density is decreased to 0.4 A g −1 .