Hierarchical Porous Intercalation-Type V2O3 as High-Performance Anode Materials for Li-Ion Batteries

被引:68
|
作者
Liu, Pengcheng [1 ]
Zhu, Kongjun [1 ]
Xu, Yuan [1 ]
Bian, Kan [1 ]
Wang, Jing [1 ]
Tai, Guo'an [1 ]
Gao, Yanfeng [2 ]
Luo, Hongjie [2 ]
Lu, Li [3 ]
Liu, Jinsong [1 ]
机构
[1] Nanjing Univ Aeronaut & Astronaut, State Key Lab Mech & Control Mech Struct, Nanjing 210016, Jiangsu, Peoples R China
[2] Shanghai Univ, Sch Mat Sci & Engn, 99 Shangda, Shanghai 200444, Peoples R China
[3] Natl Univ Singapore, Dept Mech Engn, Singapore 117575, Singapore
关键词
electrochemistry; hierarchical micro/nanostructures; intercalation-type anode material; lithium-ion batteries; reaction mechanisms; vanadium oxide; HOLLOW MICROSPHERES; ELECTROCHEMICAL PROPERTIES; CATHODE MATERIALS; METAL-OXIDE; CARBON; TRANSITION; MECHANISM; CAPACITY; NANOPARTICLES; ELECTRODES;
D O I
10.1002/chem.201700369
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
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 3D 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 ad-dition 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 mAg(-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.
引用
收藏
页码:7538 / 7544
页数:7
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