Oxyvanite V3O5: A new intercalation-type anode for lithium-ion battery

被引：131

作者：

Chen, Dong ^{[1
]}

Tan, Huiteng ^{[1
]}

Rui, Xianhong ^{[1
,2
]}

Zhang, Qi ^{[1
]}

Feng, Yuezhan ^{[3
]}

Geng, Hongbo ^{[1
]}

Li, Chengchao ^{[1
]}

Huang, Shaoming ^{[1
]}

Yu, Yan ^{[2
,4
]}

机构：

[1] Guangdong Univ Technol, Guangzhou Key Lab Low Dimens Mat & Energy Storage, Sch Mat & Energy, Collaborat Innovat Ctr Adv Energy Mat, Guangzhou 510006, Guangdong, Peoples R China

[2] Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Key Lab Mat Energy Convers, Dept Mat Sci & Engn,Chinese Acad Sci CAS, Hefei 230026, Anhui, Peoples R China

[3] Zhengzhou Univ, Key Lab Mat Proc & Mold, Minist Educ, Zhengzhou, Peoples R China

[4] Univ Sci & Technol China, Dalian Natl Lab Clean Energy DNL, Dept Mat Sci & Engn, CAS, Dalian, Liaoning, Peoples R China

来源：

INFOMAT | 2019年 / 1卷 / 02期

基金：

中国国家自然科学基金;

关键词：

high-rate capability; intercalation chemistry; lithium-ion battery; oxyvanite; V3O5; anode; FACILE SYNTHESIS; PERFORMANCE; COMPOSITE; NANOSTRUCTURE; NANOBELTS; LI3VO4;

D O I：

10.1002/inf2.12011

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In the present study, V3O5 microcrystals that synthesized via vacuum calcination are employed as anodes for lithium-ion batteries (LIBs) for the first time. Despite the widely observed sluggish reaction kinetics and poor cycling stability in most micro-sized transition metal oxides, the V3O5 microcrystals exhibit excellent rate capability (specific capacities of 144 and 125 mA hg(-1) are achieved at extremely high current densities of 20 and 50 Ag-1, respectively) and long-term cycling performance (specific capacity of 117 mA hg(-1) is sustained over 2000 cycles at 50 Ag-1). It is ascribed to the three-dimensional open-framework structure of the V3O5 microcrystals as a major factor in dictating the fast reaction kinetics (lithium diffusion coefficient: similar to 10(-9) cm(2) s(-1)). In addition, significant insight into the reaction mechanism of the V3O5 microcrystals in concomitant its phase evolution are obtained from ex-situ XRD study, revealing that the V3O5 microcrystals undergo intercalation reaction with insignificant structural change in response to lithiation/delithiation.

引用

页码：251 / 259

页数：9

共 40 条

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