| 학회 |
한국고분자학회 |
| 학술대회 |
2020년 가을 (10/05 ~ 10/08, 부산컨벤션센터(BEXCO)) |
| 권호 |
45권 1호 |
| 발표분야 |
고분자가공/복합재료 |
| 제목 |
Engineering the Hierarchical Heterostructures of Zn-Ni-Co Nanoneedles Arrays@Co-Li-LDH Nanosheets Core-Sheath Electrodes for Hybrid Asymmetric Supercapacitor with High Energy Density and Excellent Cycle Stability |
| 초록 |
A 3D hierarchical zinc-nickel-cobalt (ZNCO)@Co-Ni-LDH (LDH-1 and LDH-2) core-shell nanostructured arrays on Ni foam as pseudocapacitive electrodes are prepared by using facile hydrothermal and metal organic framework (MOF) assisted co-precipitation method. FE-SEM images shows that the core 1D ZNCO and shell 2D Co-Ni-LDH are well interconnected to form a 3D porous and hierarchical ZNCO@Co-Ni-LDH core-shell nanostructures, leading to the fast and efficient transmission/transfer of both electrolyte ions and electrons, due to the higher electroactive surface areas and enhanced electrical conductivity. In a conventional three-electrode system, the ZNCO@Co-Ni-LDH-2 electrode material displays excellent electrochemical performance with higher specific capacitance of 2866 F g−1 at 1 A g−1 with ultra-high capacitance retention of 68.35% at higher current density of 10 A g−1 and excellent life span of 89% capacitance retention after 8000 cycles. |
| 저자 |
성재경1, Jiwan Acharya1, 고태훈1, 서민강2, 길명섭1, 김학용1, 김병석1
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| 소속 |
1전북대, 2한국탄소융합기술원 |
| 키워드 |
Supercapacitor; Energy density; MOF;
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| E-Mail |
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