| 학회 |
한국공업화학회 |
| 학술대회 |
2019년 봄 (05/01 ~ 05/03, 부산 벡스코(BEXCO)) |
| 권호 |
23권 1호 |
| 발표분야 |
에너지저장·변환_포스터 |
| 제목 |
Preparation and properties of interconnected network-like NiCo2O4 nanosheets for high-performance hybrid supercapacitor |
| 초록 |
We report a simple hydrothermal route to prepare the interconnected porous NiCo2O4 nanosheets for hybrid supercapacitor applications. The obtained NiCo2O4 nanosheets shows a much higher specific capacitance of 3137 F g-1 at a current density of 2 A g-1 and 2420 F g-1 at 20 A g-1, indicating excellent rate capability. Furthermore, a hybrid supercapacitor (HSC) was constructed with the NiCo2O4 nanosheets and the nitrogen- and sulfur-codoped reduced graphene oxide as the positive and negative electrodes, respectively. The fabricated HSC delivered a high operating voltage window up to 1.5 V with energy density of 33.64 W h kg-1, a maximum power density of 14.4 kW kg-1, and satisfactory long-term stability with 125% retention over 12,000 charge/discharge cycles. The impressive performances of the prepared electrode material are a promising candidate for low-cost and high-performance energy storage device applications. |
| 저자 |
Periyasamy Sivakumar, Milan Jana, Manikantan Kota, 이현선, 박호석
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| 소속 |
성균관대 |
| 키워드 |
Nickel cobalt oxide; hybrid supercapacitor; nanosheet; hydrothermal method; electrochemistry; high-performance material
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| E-Mail |
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