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- Title
The calcined zeolitic imidazolate framework-8 (ZIF-8) under different conditions as electrode for supercapacitor applications.
- Authors
Gao, Yilong; Wu, Jianxiang; Zhang, Wei; Tan, Yueyue; Gao, Jing; Zhao, Jiachang; Tang, Bohejin
- Abstract
Zeolitic imidazolate framework-8 (ZIF-8) is synthesized by typical solvothermal method and subsequently calcined under air and nitrogen atmosphere, respectively. The carbon in the calcined ZIF-8 under nitrogen atmosphere was from the carbonization of the guest molecules, without adding any other carbon sources. The samples are characterized by X-ray diffraction, Fourier transform infrared spectroscopy, and electrochemical analyzer system. When the ZIF-8 is used as electrode materials for a supercapacitor in 6 M KOH electrolyte, it displays a pseudocapacitive behavior. The untreated ZIF-8 and calcined ZIF-8 under air and nitrogen atmosphere electrodes exhibit a specific capacitance of 96, 156, and 185 F g, respectively, at a scan rate of 5 mV s and good stability over 1,500 cycles. These results indicate that the ZIF-8 is a promising material for supercapacitors.
- Subjects
FOURIER transform infrared spectroscopy; ELECTROLYTES; ELECTROCHEMICAL analysis; ELECTRODES; CARBON
- Publication
Journal of Solid State Electrochemistry, 2014, Vol 18, Issue 11, p3203
- ISSN
1432-8488
- Publication type
Article
- DOI
10.1007/s10008-014-2578-9