| Autor: |
Shuang Liu, Siwei He, Yanhong Xiang, Xiaochun Peng, Lizhi Xiong, Jianhua Wu |
| Jazyk: |
angličtina |
| Rok vydání: |
2023 |
| Předmět: |
|
| Zdroj: |
Batteries, Vol 9, Iss 3, p 158 (2023) |
| Druh dokumentu: |
article |
| ISSN: |
2313-0105 |
| DOI: |
10.3390/batteries9030158 |
| Popis: |
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. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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