Metal-organic framework derived zirconium oxide/carbon composite as an improved supercapacitor electrode
- Title
- Metal-organic framework derived zirconium oxide/carbon composite as an improved supercapacitor electrode
- Author
- 김기현
- Keywords
- UiO-66; ZrO2; C composite; Solid-state supercapacitor; Power density; Specific capacitance
- Issue Date
- 2021-11
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- Citation
- ENERGY, v. 235, article no. 121351, Page. 1-12
- Abstract
- The pyrolysis of metal-organic frameworks (MOFs) is an effective strategy for the synthesis of novel nanoporous structures for energy storage applications. In this work, the preparation of a zirconium oxide/carbon (ZrO2/C) nanocomposite via the pyrolysis of UiO-66 (a zirconium-based MOF) is reported for the first time. These MOF-derived metal oxide/carbon (ZrO2/C) materials have a great advantage in the case of supercapacitor applications over other MOFs or their derivatives as they do not need any external conductive agent. The ZrO2/C electrode exhibits an excellent electrochemical performance, delivering a specific capacitance of 241.5 F/g at 1 A/g current density. A 2 V symmetrical supercapacitor device is also prepared by employing a solid-state polymer gel electrolyte. The assembled device of ZrO2/C electrode has delivered a high energy density of around 29 Wh/kg (at a high power density of 1.5 kW/kg) while retaining almost 97% of the specific capacitance even after 2000 continuous charge/discharge cycles. © 2021 Elsevier Ltd
- URI
- https://www.sciencedirect.com/science/article/pii/S0360544221015991?via%3Dihubhttps://repository.hanyang.ac.kr/handle/20.500.11754/176702
- ISSN
- 0360-5442;1873-6785
- DOI
- 10.1016/j.energy.2021.121351
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > CIVIL AND ENVIRONMENTAL ENGINEERING(건설환경공학과) > Articles
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