1. Unlocking the potential of metal organic frameworks for synergized specific and areal capacitances via orientation regulation.
- Author
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Deng, Ting, Shi, Xiaoyuan, Zhang, Wei, Wang, Zizhun, and Zheng, Weitao
- Subjects
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METAL-organic frameworks , *SUPERCAPACITORS , *ELECTRIC capacity , *CARBON foams , *ENERGY density , *SUPERCAPACITOR electrodes , *POWER density - Abstract
Metal organic frameworks (MOFs) with numerous potential pseudocapacitive sites are quite appealing to supercapacitors with high specific and areal capacitances. However, MOFs suffer from a low conductivity nature, resulting in a mediocre electrochemical performance. Herein, we propose a template-growth strategy of MOF to enhance both specific and areal capacitances of MOF as the electrode material for supercapacitor. As the loading mass of MOF increases from 2 to 5 mg, the specific capacitance also increases from 937 to 2387 Fg−1 (431 to 1098 Cg−1) and areal capacitance 1.87 to 11.94 Fcm−2 (0.86 to 5.49 Ccm−1). Accordingly, a hybrid MOF//AC supercapacitor can deliver a maximum energy density of 67 Wh kg−1 and a maximum power density of 6000 W kg−1. These results point to a way to fabricate MOF electrode of supercapacitor with high specific and areal capacitance, which leads them to a more practical future. [ABSTRACT FROM AUTHOR]
- Published
- 2021
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