| Autor: |
Chun-Ying Chao, Hong-Fei Li, Pin-Jiang Li, Jia-Yao Yang, Li-Jun Wu, Hong-Wei Yue, Hao Li |
| Jazyk: |
angličtina |
| Rok vydání: |
2024 |
| Předmět: |
|
| Zdroj: |
Next Materials, Vol 5, Iss , Pp 100247- (2024) |
| Druh dokumentu: |
article |
| ISSN: |
2949-8228 |
| DOI: |
10.1016/j.nxmate.2024.100247 |
| Popis: |
This study explores the synthesis of nickel-cobalt bimetallic precursors using phytic acid (PA) as a phosphorus source and their application as supercapacitor electrodes. Through high-temperature annealing, these precursors were converted into phosphorus-doped nickel-cobalt bimetallic oxides (NCO) with certain defects. The morphologies and particle size of NCO can be easily adjusted by the amount of PA. Compared to the undoped nickel-cobalt bimetallic oxides, the phosphorus-doped materials exhibited significantly enhanced electrochemical activity and specific capacitance. The optimized electrode exhibits the highest specific capacitance of 1075 F·g−1 at a current density of 1 A·g−1. The asymmetric supercapacitor assembled together with activated carbon can deliver a relatively high energy density of 39.8 Wh·kg−1 at a power density of 696 W·kg−1. Additionally, this paper provides a detailed discussion on the impact of phosphorus doping on the performance of supercapacitor electrodes and the potential of PA as an eco-friendly phosphorus source in the synthesis of high-performance electrode materials. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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