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- Title
Cobalt oxide composites derived from zeolitic imidazolate framework for high-performance supercapacitor electrode.
- Authors
Sun, Zeyu; Huang, Feng; Sui, Yanwei; Wei, Fuxiang; Qi, Jiqiu; Meng, Qingkun; Hu, Haihua; He, Yezeng
- Abstract
Co-based zeolitic imidazolate framework (ZIF-67) was chosen as a precursor to synthesize the CoO nanoparticles by annealing directly in air atmosphere at 450 and 750 °C. It is worth noting that the target temperature would play a critical role on the structure and texture of the obtaining CoO nanoparticles. Serving as a supercapacitor electrode, the CoO exhibits a remarkable specific capacitance of 706 and 543 Fg at a current density of 1 Ag in 1 mol/L KOH electrolyte, respectively. Moreover, the cycling stability is 71.5 and 70.6% after 1000 cycles. These results suggest that the electrochemical performance can be greatly enhanced by the well-controlled size and distribution of the CoO nanoparticles.
- Subjects
COBALT oxides; SUPERCAPACITOR electrodes; GRAPHENE oxide; CHEMICAL synthesis; LITHIUM-ion batteries
- Publication
Journal of Materials Science: Materials in Electronics, 2017, Vol 28, Issue 18, p14019
- ISSN
0957-4522
- Publication type
Article
- DOI
10.1007/s10854-017-7252-4