| 학회 |
한국공업화학회 |
| 학술대회 |
2021년 가을 (11/03 ~ 11/05, 대구 엑스코(EXCO)) |
| 권호 |
25권 2호 |
| 발표분야 |
포스터-전기화학 |
| 제목 |
In-situ design of N-doped carbon nano-onions (N-CNOs) for high-performance supercapacitor devices |
| 초록 |
Highly graphitic nitrogen-doped carbon nano-onions (N-CNO) are synthesized by a simple and low-cost flame pyrolysis method for supercapacitors. The pyrolysis of 30 ml Pyrrole produces a high yield of 600 mg black nanoparticles. The graphitic N-CNO with well-ordered concentric graphene layers and appropriate lattice spacing are confirmed by the structural analyses. The devices, both the symmetric and asymmetric devices are fabricated, particularly, the ASC device shows a specific capacitance value 205 F g-1 with a high energy density of 60 Wh kg-1 and power density of 5.5 kW kg-1. Furthermore, both the novel symmetric and asymmetric devices have exhibited good capacity retention of 96-98% over 5000 cycles. These findings suggest that the N-rich-CNOs have excellent electrochemical performance, and can be used in high-performance energy storage devices. |
| 저자 |
Mohan Reddy Pallavolu, Sang Woo Joo
|
| 소속 |
Yeungnam Univ. |
| 키워드 |
Pyrolysis method; N-CNOs; Supercapacitors
|
| E-Mail |
|
