Jump to main content
Jump to site search


Synthesis of cobalt-doped V2O3 with a hierarchical yolk–shell structure for high-performance lithium-ion batteries

Author affiliations

Abstract

Transition metal oxides as electrode materials for LIBs are constrained by tremendous volume changes, self-aggregation and poor conductivity. Therefore, it is extremely imperative and necessary to develop a new electrode material with high capacity and long-term cycles. In this paper, yolk–shell Co-V2O3-24 nanospheres assembled with nanosheets were designed and synthesized through a one-step solvothermal treatment and calcination process. The results show that the anion plays a significant role in morphology induction during the solvothermal reactions. As an anode material, Co-V2O3-24 displayed an outstanding reversible specific capacity of 986.2 mA h g−1 at 0.5 A g−1 after 630 cycles with a high capacity retention rate. Even when tested at 5 A g−1 after 2200 cycles, the specific capacity of 457.6 mA h g−1 can be retained, which indicates that Co-V2O3-24 has excellent rate performance and cycle stability. The outstanding lithium storage properties mainly benefit from the novel 3D hierarchical structure, Co doping and abundant electrochemical active sites.

Graphical abstract: Synthesis of cobalt-doped V2O3 with a hierarchical yolk–shell structure for high-performance lithium-ion batteries

Back to tab navigation

Supplementary files

Article information


Submitted
08 Nov 2019
Accepted
27 Jan 2020
First published
27 Jan 2020

CrystEngComm, 2020, Advance Article
Article type
Paper

Synthesis of cobalt-doped V2O3 with a hierarchical yolk–shell structure for high-performance lithium-ion batteries

S. Zhang, L. Zhang, G. Xu, X. Zhang and A. Zhao, CrystEngComm, 2020, Advance Article , DOI: 10.1039/C9CE01771B

Social activity

Search articles by author

Spotlight

Advertisements