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Title: Graphene quantum dots coated VO2 arrays for highly durable electrodes for Li and Na Ion batteries
Authors: Xia, Xinhui
Liu, Jilei
Zhang, Xiao
Wang, Jin
Liang, Pei
Lin, Jianyi
Chao, Dongliang
Zhang, Hua
Shen, Ze Xiang
Zhu, Changrong
Fan, Hong Jin
Keywords: DRNTU::Engineering::Materials::Nanostructured materials
DRNTU::Science::Chemistry::Physical chemistry::Quantum chemistry
Issue Date: 2014
Source: Chao, D., Zhu, C., Xia, X., Liu, J., Zhang, X., Wang, J., et al. (2014). Graphene quantum dots coated VO2 arrays for highly durable electrodes for Li and Na Ion batteries. Nano Letters, 15(1), 565-573.
Series/Report no.: Nano letters
Abstract: Nanoscale surface engineering is playing important role in enhancing the performance of battery electrode. VO2 is one of high-capacity but less-stable materials and has been used mostly in the form of powders for Li-ion battery cathode with mediocre performance. In this work, we design a new type of binder-free cathode by bottom-up growth of biface VO2 arrays directly on a graphene network for both high-performance Li-ion and Na-ion battery cathodes. More importantly, graphene quantum dots (GQDs) are coated onto the VO2 surfaces as a highly efficient surface “sensitizer” and protection to further boost the electrochemical properties. The integrated electrodes deliver a Na storage capacity of 306 mAh/g at 100 mA/g, and a capacity of more than 110 mAh/g after 1500 cycles at 18 A/g. Our result on Na-ion battery may pave the way to next generation postlithium batteries.
DOI: 10.1021/nl504038s
Rights: © 2014 American Chemical Society. This is the author created version of a work that has been peer reviewed and accepted for publication by Nano Letters, American Chemical Society. 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
SPMS Journal Articles

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