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- Title
Zn-Co-Mo-rGO Ultra-Thin Nanosheets Arrays-Based Electrode Materials for Asymmetric Supercapacitor.
- Authors
Liu, Shuang; He, Siwei; Xiang, Yanhong; Peng, Xiaochun; Xiong, Lizhi; Wu, Jianhua
- Abstract
The design of electrode materials for supercapacitors (SCs) with high specific capacity and high energy density has always been a research hotspot. In this paper, ternary metal oxides Zn-Co-Mo-rGO (ZCMG) and Zn-Co-Mo (ZCM) based electrode materials were prepared by one-step hydrothermal method. Compared with the ZCM, SEM and TEM results demonstrates the ultra-thin nanosheets grown vertically on the nickel foam for ZCMG. Owing to synergistic effect of the multi-component composites, the as-prepared electrode with ZCMG exhibits the specific capacity of 713 C g−1 (1189 F g−1) at 1 A g−1, which was higher than that of ZCM without rGO (492 F g−1, 295 C g−1). The assembled ZCMG//AC (activated carbon) asymmetric supercapacitor (ASC) delivers the maximum specific capacity of 68 C g−1 (45 F g−1) at 1 A g−1. After 1000 cycles, it still has a high-capacity retention rate of 95%. Furthermore, the ASC exhibited an energy density of 14 Wh kg−1 at 750 W kg−1, and it can retain 5.23 Wh kg−1, even at 7500 W kg−1.
- Subjects
NANOSTRUCTURED materials; ENERGY density; ELECTRODES; METALLIC oxides; ACTIVATED carbon
- Publication
Batteries, 2023, Vol 9, Issue 3, p158
- ISSN
2313-0105
- Publication type
Article
- DOI
10.3390/batteries9030158