Preparation of rGO/MXene@NiCo-P and rGO/MXene@Fe2O3 positive and negative composite electrodes for high-performance asymmetric supercapacitors
Journal of Energy Storage, cilt.56, 2022 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 56
- Basım Tarihi: 2022
- Doi Numarası: 10.1016/j.est.2022.105986
- Dergi Adı: Journal of Energy Storage
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Compendex, INSPEC
- Anahtar Kelimeler: Fe2O3, MXene, Nickel‑cobalt phosphate, Reduced graphene oxide, Supercapacitor
- Boğaziçi Üniversitesi Adresli: Hayır
Özet
In this study, reduced graphene oxide/MXene-based composite electrodes combined with Fe2O3 and NiCo-P as the negative and positive electrodes are prepared by a facile in-situ solvothermal route. Both rGO/MXene@Fe2O3 and rGO/MXene@NiCo-P have an interconnected nanostructure with the specific surface areas at 17.1 and 131.9 m2·g−1. The specific capacitance of the as-prepared rGO/MXene@Fe2O3 and rGO/MXene@NiCo-P composite electrodes are 248.13 and 214.66 mAh·g−1 under current density at 1 A·g−1. An asymmetric supercapacitor (ASC) is further assembled using rGO/MXene@Fe2O3 and rGO/MXene@NiCo-P as the negative and positive electrodes, respectively. The maximum energy density of the assembled ASC is 29.46 Wh·kg−1 at a power density of 700.34 W·kg−1. After 10,000 cycles, 70.87 % of the capacity can be retained. These results demonstrate the potential application of composite electrode materials for supercapacitors.