| 학회 |
한국화학공학회 |
| 학술대회 |
2012년 가을 (10/24 ~ 10/26, 부산 BEXCO) |
| 권호 |
18권 2호, p.2113 |
| 발표분야 |
에너지 |
| 제목 |
Nanohybridization of Ionic Liquids and Cobalt Hydroxide Nanofiber for High Performance of Pseudocapacitor |
| 초록 |
Development of nanostructured materials possessing the capabilities of enhanced redox reactions is important for achieving high energy and power densities in the energy storage systems. Here, we demonstrate that the nanohybridization of ionic liquids (ILs) and cobalt hydroxide (Co(OH)2) nanofibers via ionothermal synthesis leads to a rapid and reversible redox reaction by a tailored favorable morphology and surface chemistry. The as-synthesized IL-Co(OH)2 nanohybrid material exhibits improvement of electrochemical characteristics, compared with the bare Co(OH)2, showing a high specific capacitance of 859 F g−1 at 1 A g−1, high-rate capability (~95% retention at 30 A g−1), and excellent cycling performance (~96% retention over 1000 cycles). Our density functional calculations reveal that the IL molecules, consisting of anion and cation groups, enable easier hydrogen desorption/adsorption process. |
| 저자 |
허윤석1, 양민호2, 정성철1, 박호석2, 한영규1, 최봉길2
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| 소속 |
1Division of Materials Science, 2Korea Basic Science Institute |
| 키워드 |
Nanohybridization; Cobalt Hydroxide; Pseudocapacitor
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| E-Mail |
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| 원문파일 |
초록 보기 |
