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Title: Morphology controlled lithium storage in Li3VO4 anodes
Authors: Yang, Guang
Zhang, Bowei
Feng, Jianyong
Lu, Yu
Wang, Zhiqiang
Aravindan, Vanchiappan
Aravind, Muthiah
Liu, Jilei
Srinivasan, Madhavi
Shen, Zexiang
Huang, Yizhong
Keywords: Li3VO4
Issue Date: 2018
Source: Yang, G., Zhang, B., Feng, J., Lu, Y., Wang, Z., Aravindan, V., et al. (2018). Morphology controlled lithium storage in Li3VO4 anodes. Journal of Materials Chemistry A, 6(2), 456-463.
Series/Report no.: Journal of Materials Chemistry A
Abstract: Li3VO4 (LVO) anode materials with controllable morphologies ranging from spherical-assemblies, single-crystal nanorods, and flower shapes to bulk-shapes were fabricated via a solvothermal approach using different alcohols (i.e., ethanol, methanol, propanol, and butanol). XRD, SEM, BET, Raman and FTIR and galvanostatic charge/discharge measurements were carried out to correlate their structure/morphology with their electrochemical characteristics. The experimental results reveal that both structure and morphology play important roles in the Li+ ion storage of LVO, which degrades in the sequential order from nanorods, to spheres, to flowers and finally to bulk. The LVO nanorods are hierarchical and have a small particle size, high specific surface area, and high crystallinity; thus, they exhibit the largest Li+ ion diffusion coefficient and best electrochemical performance among the four electrodes. Moreover, coating carbon on the single-crystal LVO nanorods further enhances their Li+ ion storage ability. Consequently, the carbon-coated LVO nanorods deliver a high reversible capacity of 440 mA h g−1 at 0.1 A g−1 with good cycling stability and demonstrate great practical application. In addition, the results promote a better fundamental understanding of the Li+ ion storage behavior in LVO and provide insight into the optimal design of LVO and other vanadium-based electrode materials.
ISSN: 2050-7488
DOI: 10.1039/C7TA09023D
Rights: © 2018 The Royal Society of Chemistry. This is the author created version of a work that has been peer reviewed and accepted for publication by Journal of Materials Chemistry A, The Royal Society of Chemistry. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [].
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:ERI@N Journal Articles
MSE Journal Articles
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SPMS Journal Articles

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