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- W4292260737 abstract "Owing to the instability and poor electronic conductivity of redox-active metal–organic frameworks (MOFs), the redox-active MOFs as a direct electrode for achieving fast and high-stability supercapacitors is a significant challenge. Herein, highly redox-active bimetallic Ni/Co metal–organic frameworks (Ni/Co-MOF) is in-situ stabilizied by 2D thin-layer aminated Ti3C2Tx to construct promising hierarchical heterostructural electrodes with superior wettability for high-performance supercapacitors. Benefitting from high conductivity and the good wettability with electrolyte of aminated MXene, the bimetallic Ni/Co-MOF can be uniformly in-situ stabilizied on the aminated MXene surface, thus guaranteeing the superior electronic and ionic transmission from the redox active center of Ni/Co-MOF, and good interfacial compatibility and large contact area. The modified MXene is beneficial to slow down the van der Waals interactions between functional groups to exfoliate the sheet-like structures. For the rapid redox reactions whereas the synergy of highly redox-active Ni/Co in bimetallic Ni/Co-MOF provides a fast redox reaction for Faradaic capacitance. Therefore, as-obtained Ni/Co-MOF@TCT-NH2 presents an ultra-high specific capacitance of 1924 F·g−1 at 0.5 A·g−1 and an ultra-long cycling stability with 10,000 cycles at 10 A·g-1 in a three-electrode system. Besides, the assembled Ni/Co-MOF@TCT-NH2//AC asymmetrical devices exhibit a maximum specific energy density of 98.1 Wh·kg−1 at 600 W·kg−1 and superior rate stability with 15,600 cycles. Such superior electrochemical performance demonstrates that the heterojunction construction of thin-layer aminated MXene to stabilize highly redox-active bimetallic MOFs is an effective strategy for MOFs as a direct electrode to enhance the energy storage." @default.
- W4292260737 created "2022-08-19" @default.
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- W4292260737 date "2023-01-01" @default.
- W4292260737 modified "2023-10-11" @default.
- W4292260737 title "Ni/Co-MOF@aminated MXene hierarchical electrodes for high-stability supercapacitors" @default.
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- W4292260737 doi "https://doi.org/10.1016/j.cej.2022.138687" @default.
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