1. Hierarchical Porous Intercalation-Type V2O3 as High-Performance Anode Materials for Li-Ion Batteries.
- Author
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Liu, Pengcheng, Zhu, Kongjun, Xu, Yuan, Bian, Kan, Wang, Jing, Tai, Guo‘an, Gao, Yanfeng, Luo, Hongjie, Lu, Li, and Liu, Jinsong
- Subjects
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VANADIUM oxide , *LITHIUM-ion batteries , *POROUS materials , *ANODES , *GRAPHITE , *NANOSTRUCTURES - Abstract
As intercalation-type anode materials for Li-ion batteries (LIBs), the commercially used graphite and Li4Ti5O12 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 V2O3@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 V2O3 is a new, promising intercalation-type anode material for LIBs with a high capacity. V2O3@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 V2O3 for Na-ion batteries (NIBs) is elaborated for the first time, and excitingly, it is found that V2O3@C micro/nanostructures may be promising anode materials for NIBs. [ABSTRACT FROM AUTHOR]
- Published
- 2017
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