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- Title
Self-supported 3D layered zinc/nickel metal-organic-framework with enhanced performance for supercapacitors.
- Authors
Zhang, Xiaolong; Sui, Yanwei; Wei, Fuxiang; Qi, Jiqiu; Meng, Qingkun; Ren, Yaojian; He, Yezeng
- Abstract
Metal-organic frameworks (MOFs) have been used as a novel electrode material in terms of energy storage and conversion, owning to their stable porous architectures and exceptionally specific surface area. In this study, we have synthesized Ni-MOF and bimetallic Zn/Ni-MOF via a facile one-step hydrothermal method. Comparing with the pure Ni-MOF, the as-prepared Zn/Ni-MOF exhibits a superior energy storage capacity (878 F g−1 at 1 A g−1), better rate performance (536 F g−1 at 10 A g−1) and cycling stability (72% retention over 2500 charge/discharge cycles). In addition, the assembled asymmetric supercapacitor based on the Zn/Ni-MOF-1/NF//RGO shows a remarkable supercapacitive performance with the energy density of 30.51 Wh kg−1 at the power density of 800 W kg−1, and a superior cycling stability of 80.3% retention over 5000 cycles.
- Subjects
SUPERCAPACITOR performance; SUPERCAPACITORS; SUPERCAPACITOR electrodes; ENERGY storage; ENERGY density; ENERGY conversion; POWER density; GRAPHITIZATION
- Publication
Journal of Materials Science: Materials in Electronics, 2019, Vol 30, Issue 19, p18101
- ISSN
0957-4522
- Publication type
Article
- DOI
10.1007/s10854-019-02163-6