Hierarchical Porous Intercalation-Type V2 O3 as High-Performance Anode Materials for Li-Ion Batteries

Pengcheng Liu; Kongjun Zhu; Yuan Xu; Kan Bian; Jing Wang; Guo'an Tai; Yanfeng Gao; Hongjie Luo; Li Lu; Jinsong Liu

doi:10.1002/chem.201700369

Hierarchical Porous Intercalation-Type V₂ O₃ as High-Performance Anode Materials for Li-Ion Batteries

Chemistry. 2017 Jun 1;23(31):7538-7544. doi: 10.1002/chem.201700369. Epub 2017 May 11.

Authors

Pengcheng Liu¹, Kongjun Zhu¹, Yuan Xu¹, Kan Bian¹, Jing Wang¹, Guo'an Tai¹, Yanfeng Gao², Hongjie Luo², Li Lu³, Jinsong Liu¹

Affiliations

¹ State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, P. R. China.
² School of Materials Science and Engineering, Shanghai University, 99 Shangda, Shanghai, 200444, P. R. China.
³ Department of Mechanical Engineering, National University of Singapore, Singapore, 117575, Singapore.

PMID: 28370628
DOI: 10.1002/chem.201700369

Abstract

As intercalation-type anode materials for Li-ion batteries (LIBs), the commercially used graphite and Li₄ Ti₅ O₁₂ exhibit good cycling and rate properties, but their theoretical specific capacities are too low to meet the ever-growing demands of high-energy applications such as electric vehicles. Therefore, the development of new intercalation-type anode materials with larger capacity is very desirable. Herein, we design and synthesize novel 3 D hierarchical porous V₂ O₃ @C micro/nanostructures consisting of crumpled nanosheets, through self-reduction under annealing from the structurally similar VO₂ (B)@C precursors without the addition of any other reducing reagent or gas. Excitingly, it is found for the first time through ex situ XRD technology that V₂ O₃ is a new, promising intercalation-type anode material for LIBs with a high capacity. V₂ O₃ @C micro/nanostructures can deliver a large capacity of 732 mAh g^-1 without capacity loss at 100 mA g^-1 even after 136 cycles, as well as exhibiting excellent cycling and rate performances. The application of V₂ O₃ for Na-ion batteries (NIBs) is elaborated for the first time, and excitingly, it is found that V₂ O₃ @C micro/nanostructures may be promising anode materials for NIBs.

Keywords: electrochemistry; hierarchical micro/nanostructures; intercalation-type anode material; lithium-ion batteries; reaction mechanisms; vanadium oxide.