Co3V2O8 Hexagonal Pyramid with Tunable Inner Structure as High Performance Anode Materials for Lithium Ion Battery. (1st June 2017)

• Record Type: Journal Article
• Authors: Zhang, Qiang; Pei, Jian; Chen, Gang; Bie, Changfeng; Chen, Dahong; Jiao, Yang; Rao, Jiancun
• Is Part Of: Electrochimica acta. Volume 238(2017)
• Page Start: 227
• Page End: 236
• Publication Date: 2017-06-01
• Subjects: Co3V2O8 -- hexagonal pyramid -- hierarchical architecture -- anode material -- lithium-ion batteries; Electrochemistry -- Periodicals; Electrochemistry, Industrial -- Periodicals; 541.37
• DOI: 10.1016/j.electacta.2017.04.013
• Languages: English
• ISSNs: 0013-4686

Abstract

Abstract: Co3 V2 O8 hexagonal pyramid was successfully fabricated via a simple hydrothermal process and subsequent heat treatment. The inner structure of the hexagonal pyramid was further adjusted by controlling the size of Co7 V4 O16 (OH)2 (H2 O) precursors. Hierarchical Co3 V2 O8 hexagonal pyramid with height of 1 μm were orderly constructed from 60–80 nm inter-connected particles, showing numerous interval voids. Benefiting from its unique structure, the as-prepared sample showed higher electrochemical performance as an anode material for lithium-ion batteries than that of another bulk sample with height of 5 μm and adhesive inner structure. When tested at a current density of 500 mA g −1, the hierarchical Co3 V2 O8 hexagonal pyramid exhibited good rate capacity, high cycling stability, and excellent discharge capacity up to 712 mA h g −1, making it promising electrode materials for lithium-ion batteries.