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High-Performance Flexible Asymmetric Supercapacitor Based on CoAl-LDH and rGO Electrodes
| Content Provider | Paperity |
|---|---|
| Author | Li, Shuoshuo Cheng, Pengpeng Yuan, Dingsheng Xu, Weiming Luo, Jiaxian Li, Ruchun Zhou, Dan Li, Jingwei |
| Abstract | A flexible asymmetric supercapacitor (ASC) based on a CoAl-layered double hydroxide (CoAl-LDH) electrode and a reduced graphene oxide (rGO) electrode was successfully fabricated. The CoAl-LDH electrode as a positive electrode was synthesized by directly growing CoAl-LDH nanosheet arrays on a carbon cloth (CC) through a facile hydrothermal method, and it delivered a specific capacitance of 616.9 F g−1 at a current density of 1 A g−1. The rGO electrode as a negative electrode was synthesized by coating rGO on the CC via a simple dip-coating method and revealed a specific capacitance of 110.0 F g−1 at a current density of 2 A g−1. Ultimately, the advanced ASC offered a broad voltage window (1.7 V) and exhibited a high superficial capacitance of 1.77 F cm−2 at 2 mA cm−2 and a high energy density of 0.71 mWh cm−2 at a power density of 17.05 mW cm−2, along with an excellent cycle stability (92.9% capacitance retention over 8000 charge–discharge cycles). |
| Starting Page | 31 |
| File Format | HTM / HTML |
| ISSN | 23116706 |
| DOI | 10.1007/s40820-017-0134-8 |
| Issue Number | 3 |
| Journal | Nano-Micro Letters |
| Volume Number | 9 |
| e-ISSN | 21505551 |
| Language | English |
| Publisher | Springer Singapore |
| Publisher Date | 2017-07-01 |
| Access Restriction | Open |
| Subject Keyword | Cycle stability Layer double hydroxides Reduced graphene oxide Flexible asymmetric supercapacitor |
| Content Type | Text |
| Resource Type | Article |
| Subject | Nanoscience and Nanotechnology Surfaces, Coatings and Films Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering |
