Porous carbon assisted carbon nanotubes supporting Fe3O4 nanoparticles for improved lithium storage. Issue 18 (15th September 2021)

• Record Type: Journal Article
• Authors: Song, Jian; Ji, Yelin; Li, Yuexian; Lu, Ximing; Ren, Wenchen; Tian, Qinghua; Chen, Jizhang; Yang, Li
• Is Part Of: Ceramics international. Volume 47:Issue 18(2021)
• Page Start: 26092
• Page End: 26099
• Publication Date: 2021-09-15
• Subjects: Lithium-ion batteries -- Fe3O4 anode -- Porous carbon assisted CNTs supporting -- High capacitive contribution -- Superior electrochemical performance; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2021.06.015
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: Herein, to efficiently improve the lithium storage of Fe3 O4 nanoparticles, a distinctive porous carbon (PC) assisted carbon nanotubes (CNTs) supporting architecture has been designed and fabricated successfully. The Fe3 O4 nanoparticles are deposited on the surface of CNTs and then covered by an extra PC. In such a designed architecture, highly conductive and robust CNTs can not only improve the conductivity but also boost the structure of the as-fabricated Fe3 O4 -based composite (CNTs@Fe3 O4 @PC). In particular, the foam-like PC has a certain level of volume elasticity and open tunnel-like structure to better anchor the Fe3 O4 nanoparticles on the surface of CNTs and facilitate the transfer of electrons and ions, therefore guaranteeing the fast kinetics and long-term stability. The results show that the capacitive contribution is predominant in lithium storage of the CNTs@Fe3 O4 @PC electrode. Consequently, the as-fabricated CNTs@Fe3 O4 @PC shows high capacity, good rate capability, and long life, displaying 766 and 572 mAh g -1 after 400 and 700 cycles at 200 and even 1000 mA g -1, respectively. Thus outstanding performance makes the CNTs@Fe3 O4 @PC have great potential to be advanced lithium-ion battery anode materials. Furthermore, this strategy can be extended to other nanostructured metal oxide anodes, such as CoO, SnO2, and Bi2 O3 nanomaterials.