Metal-organic framework derived zirconium oxide/carbon composite as an improved supercapacitor electrode
- Authors
- Shrivastav, Vishal; Sundriyal, Shashank; Tiwari, Umesh K.; Kim, Ki-Hyun; Deep, Akash
- Issue Date
- Nov-2021
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- Keywords
- UiO-66; ZrO2; C composite; Solid-state supercapacitor; Power density; Specific capacitance
- Citation
- ENERGY, v.235, pp.1 - 12
- Indexed
- SCIE
SCOPUS
- Journal Title
- ENERGY
- Volume
- 235
- Start Page
- 1
- End Page
- 12
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/140309
- DOI
- 10.1016/j.energy.2021.121351
- ISSN
- 0360-5442
- 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.
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