Enhanced electrochemical performance of a selectively formed V2O3/C composite structure for Li-ion batteries

被引：24
作者：
Kim, Ji-Hwan [1 ]
Kim, Yo-Seob [1 ]
Moon, Sang-Hyun [1 ]
Park, Deok-Hye [1 ]
Kim, Min-Cheol [1 ]
Choi, Jin-Hyeok [1 ]
Shin, Jae-Hoon [1 ]
Park, Kyung-Won [1 ]
机构：
[1] Soongsil Univ, Dept Chem Engn, Seoul 06978, South Korea
来源：
ELECTROCHIMICA ACTA | 2021年 / 389卷
基金：
新加坡国家研究基金会;
关键词：
Vanadium oxide; Carbon; Microsphere; Anode; Lithium-ion batteries; REDUCED GRAPHENE OXIDE; LONG-CYCLE-LIFE; ANODE MATERIALS; HIGH-CAPACITY; DOPED CARBON; LITHIUM; STORAGE; FACILE; GLYCEROL; NANOCOMPOSITES;
D O I：
10.1016/j.electacta.2021.138685
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
The electrochemical performance of V2O3 as an anode in lithium-ion batteries (LIBs) is quite good but it is very difficult to compete with Si/C composites. Because its intrinsic electrical conductivity and volumetric expansion during charging/discharging limit its applications as an anode in LIBs. In this study, micro spherical V2O3 anode samples were prepared using a facile synthesis procedure such as the solvothermal method and heating process. Furthermore, a composite sample comprising V2O3 and carbon (V2O3/C) could be selectively prepared in the absence of ethanol washing and centrifugation. In particular, compared to a commercial V2O3 and V2O3, the V2O3/C anode exhibited enhanced electrochemical performance, i.e., rate performance (230 mAh g(-1) at 1.0 A g(-1), 180 mAh g(-1) at 2.0 A g(-1)), cycling properties (508 mAh g(-1) at 0.1 A g(-1) for 100 cycles), and high retention (similar to 10 0%). (C) 2021 Elsevier Ltd. All rights reserved.
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页数：9
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