Lithium Storage in Microstructures of Amorphous Mixed-Valence Vanadium Oxide as Anode Materials
文献类型：期刊论文
| 作者 | Zhao, D; Zheng LR(郑黎荣) ; Zheng, LR; Xiao, Y; Wang, X; Cao, MH
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| 刊名 | CHEMSUSCHEM
 |
| 出版日期 | 2015 |
| 卷号 | 8期号:13页码:2212-2222 |
| 关键词 | amorphous materials lithium-ion batteries microspheres mixed-valent compounds vanadium oxide |
| 英文摘要 | Constructing 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. |
| 学科主题 | Chemistry |
| 类目[WOS] | Chemistry, Multidisciplinary |
| 收录类别 | SCI ; EI |
| WOS记录号 | WOS:000357619000008 |
| 公开日期 | 2016-05-03 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/228606]  |
| 专题 | 中国科学院高能物理研究所 |
| 推荐引用方式 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. |
入库方式： OAI收割
来源：高能物理研究所
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