Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7727705 | Journal of Power Sources | 2016 | 11 Pages |
Abstract
In this study, a metastable form of vanadium dioxide, denoted as VO2(B), has been successfully synthesized under solvothermal condition. However, the as-received VO2(B) suffers from fast capacity fading and poor high-rate performance. In order to overcome these problems, the as-received VO2(B) is solvothermally treated with reduced graphene oxide (rGO) to produce VO2(B)/rGO composite. As a result, the resulting electric conductivity of the VO2(B)/rGO composite is improved to â¼10â4 cm Sâ1 (from â¼10â7 S cmâ1 for the as-received VO2(B)). Electrochemical data of the VO2(B)/rGO composite, tested in both Li and Na cells, shows markedly enhanced electrochemical performance compared to bare VO2(B). The effect of electro-conducting rGO is more evident at high rates.
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
Nurulhuda Binti Mahadi, Jae-Sang Park, Jae-Ho Park, Kyung Yoon Chung, Su Youl Yi, Yang-Kook Sun, Seung-Taek Myung,