Synthesis of CNT@Fe3O4-C hybrid nanocables as anode materials with enhanced electrochemical performance for lithium ion batteries. (10th September 2015)

• Record Type: Journal Article
• Authors: Dong, Yucheng; Md, Kamruzzaman; Chui, Ying-San; Xia, Yang; Cao, Chenwei; Lee, Jong-Min; Zapien, Juan Antonio
• Is Part Of: Electrochimica acta. Volume 176(2015)
• Page Start: 1332
• Page End: 1337
• Publication Date: 2015-09-10
• Subjects: Hybrid nanocables -- carbon nanotubes -- Fe3O4 -- anode materials -- lithium ion batteries; Electrochemistry -- Periodicals; Electrochemistry, Industrial -- Periodicals; 541.37
• DOI: 10.1016/j.electacta.2015.07.144
• Languages: English
• ISSNs: 0013-4686

Abstract

Abstract: We report a simple method to prepare hierarchical structures of carbon-coated Fe3 O4 nanoparticles decorated on conductive multi-walled carbon nanotubes (CNTs) backbone as advanced anode materials for lithium ion batteries. The CNTs backbone serves as a shape template and conducting network to facilitate electron and lithium ion transport, while the carbon coating acts as a buffering layer to maintain the structural integrity of the electrode upon cycling. The prepared CNT@Fe3 O4 -C hybrid nanocables electrode exhibits excellent electrochemical performance with long-term cycling stability and high specific capacity of ∼1080 mAh g −1 after 700 cycles at a current density of 500 mA g −1, and good rate capability, which could be attributed to their unique structural features as well as the improved mechanical stability enabled by the outer carbon coating layer.