3D porous V2O5 architectures for high-rate lithium storage

被引：37
作者：
Li, Qifei [1 ]
Chen, Dong [1 ]
Tan, Huiteng [1 ]
Zhang, Xianghua [1 ]
Rui, Xianhong [1 ,2 ,3 ]
Yu, Yan [2 ,4 ,5 ]
机构：
[1] Guangdong Univ Technol, Collaborat Innovat Ctr Adv Energy Mat, Sch Mat & Energy, Guangzhou Key Lab Low Dimens Mat & Energy Storage, Guangzhou 510006, Guangdong, Peoples R China
[2] Univ Sci & Technol China, CAS, Dept Mat Sci & Engn, Hefei Natl Lab Phys Sci Microscale,Key Lab Mat En, Hefei 230026, Anhui, Peoples R China
[3] State Key Lab Vanadium & Titanium Resources Compr, Panzhihua 617000, Sichuan, Peoples R China
[4] Chinese Acad Sci, Dalian Natl Lab Clean Energy DNL, Dalian 116023, Liaoning, Peoples R China
[5] Univ Sci & Technol China, State Key Lab Fire Sci, Hefei 230026, Anhui, Peoples R China
来源：
JOURNAL OF ENERGY CHEMISTRY | 2020年 / 40卷
基金：
中国国家自然科学基金;
关键词：
Lithium storage; V2O5; cathode; Porous structure; Mass production; High rate; CATHODE MATERIALS; HOLLOW MICROSPHERES; ION; CARBON; ELECTRODES; NANOSHEETS; BATTERIES; PENTOXIDE; FOAMS; LI;
D O I：
10.1016/j.jechem.2019.02.010
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
The discovery of novel electrode materials promises to unleash a number of technological advances in lithium-ion batteries. V2O5 is recognized as a high-performance cathode that capitalizes on the rich redox chemistry of vanadium to store lithium. To unlock the full potential of V2O5, nanotechnology solution and rational electrode design are used to imbue V2O5 with high energy and power density by addressing some of their intrinsic disadvantages in macroscopic crystal form. Here, we demonstrate a facile and environmental-friendly method to prepare nanorods-constructed 3D porous V2O5 architectures (3D-V2O5) in large-scale. The 3D porous architecture is found to be responsible for the enhanced charge transfer kinetics and Li-ion diffusion rate of the 3D-V2O5 electrode. As the result, the 3D-V2O5 surpasses the conventional bulk V2O5 by showing enhanced discharge capacity and rate capability (delivering 154 and 127 mAh g(-1) at 15 and 20 C, respectively). (C) 2019 Science Press and Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. and Science Press. All rights reserved.
引用
收藏
页码：15 / 21
页数：7
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