IHEP OpenIR
Lithium Storage in Microstructures of Amorphous Mixed-Valence Vanadium Oxide as Anode Materials
Zhao, D; Zheng LR(郑黎荣); Zheng, LR; Xiao, Y; Wang, X; Cao, MH
2015
Source PublicationCHEMSUSCHEM
ISSN1864-5631
EISSN1864-564X
Volume8Issue:13Pages:2212-2222
SubtypeArticle
AbstractConstructing three-dimensional (3D) nanostructures with excellent structural stability is an important approach for realizing high-rate capability and a high capacity of the electrode materials in lithium-ion batteries (LIBs). Herein, we report the synthesis of hydrangea-like amorphous mixed-valence VOx microspheres (a-VOx MSs) through a facile solvothermal method followed by controlled calcination. The resultant hydrangea-like a-VOx MSs are composed of intercrossed nanosheets and, thus, construct a 3D network structure. Upon evaluation as an anode material for LIBs, the a-VOx MSs show excellent lithium-storage performance in terms of high capacity, good rate capability, and long-term stability upon extended cycling. Specifically, they exhibit very stable cycling behavior with a highly reversible capacity of 1050mAhg(-1) at a rate of 0.1Ag(-1) after 140cycles. They also show excellent rate capability, with a capacity of 390mAhg(-1) at a rate as high as 10Ag(-1). Detailed investigations on the morphological and structural changes of the a-VOx MSs upon cycling demonstrated that the a-VOx MSs went through modification of the local VO coordinations accompanied with the formation of a higher oxidation state of V, but still with an amorphous state throughout the whole discharge/charge process. Moreover, the a-VOx MSs can buffer huge volumetric changes during the insertion/extraction process, and at the same time they remain intact even after 200cycles of the charge/discharge process. Thus, these microspheres may be a promising anode material for LIBs.
Keywordamorphous materials lithium-ion batteries microspheres mixed-valent compounds vanadium oxide
Subject AreaChemistry
DOI10.1002/cssc.201500256
Indexed BySCI ; EI
Language英语
WOS Research AreaChemistry, Multidisciplinary ; Green & Sustainable Science & Technology
WOS SubjectChemistry ; Science & Technology - Other Topics
WOS IDWOS:000357619000008
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ihep.ac.cn/handle/311005/228606
Collection中国科学院高能物理研究所
Recommended Citation
GB/T 7714
Zhao, D,Zheng LR,Zheng, LR,et al. Lithium Storage in Microstructures of Amorphous Mixed-Valence Vanadium Oxide as Anode Materials[J]. CHEMSUSCHEM,2015,8(13):2212-2222.
APA Zhao, D,郑黎荣,Zheng, LR,Xiao, Y,Wang, X,&Cao, MH.(2015).Lithium Storage in Microstructures of Amorphous Mixed-Valence Vanadium Oxide as Anode Materials.CHEMSUSCHEM,8(13),2212-2222.
MLA Zhao, D,et al."Lithium Storage in Microstructures of Amorphous Mixed-Valence Vanadium Oxide as Anode Materials".CHEMSUSCHEM 8.13(2015):2212-2222.
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