Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/121921
Citations | ||
Scopus | Web of Science® | Altmetric |
---|---|---|
?
|
?
|
Type: | Journal article |
Title: | Graphene quantum dots coated VO₂ arrays for highly durable electrodes for Li and Na ion batteries |
Author: | Chao, D. Zhu, C. Xia, X. Liu, J. Zhang, X. Wang, J. Liang, P. Lin, J. Zhang, H. Shen, Z.X. Fan, H.J. |
Citation: | Nano Letters: a journal dedicated to nanoscience and nanotechnology, 2015; 15(1):565-573 |
Publisher: | ACS Publicationns |
Issue Date: | 2015 |
ISSN: | 1530-6984 1530-6992 |
Statement of Responsibility: | Dongliang Chao, Changrong Zhu, Xinhui Xia, Jilei Liu, Xiao Zhang, Jin Wang, Pei Liang, Jianyi Lin, Hua Zhang, Ze Xiang Shen and Hong Jin Fan |
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. |
Keywords: | Vanadium oxides; sodium ion battery; lithium ion battery; graphene quantum dots; nanoarray electrodes |
Rights: | © 2014 American Chemical Society. |
DOI: | 10.1021/nl504038s |
Published version: | http://dx.doi.org/10.1021/nl504038s |
Appears in Collections: | Aurora harvest 4 Chemical Engineering publications |
Files in This Item:
There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.