Zeng Jie, Devarayapalli Kamakshaiah Charyulu, Li Changping, Vattikuti S V Prabhakar, Shim Jaesool
School of Mechanical Engineering, Yeungnam University, Gyeongsan, 38541, Republic of Korea.
Department of Environmental Engineering, Kyungpook National University, Daegu, 41566, Republic of Korea.
Chem Asian J. 2022 Nov 16;17(22):e202200685. doi: 10.1002/asia.202200685. Epub 2022 Sep 22.
Binder-free two-dimensional mesh-like structure of nickel-zinc metal-organic framework on in-situ-coated carbon cloth (Ni-Zn MOF/CC) and Ni-Zn MOF powder were developed via a solvo-hydrothermal reaction for electrochemical storage application. The electrochemical properties of these electrodes show that the electrodes self-assembled on carbon cloth substrates exhibit remarkably excellent performance. The Ni-Zn MOF/CC electrode exhibited a capacitance of 653.54 F/g at 1 A/g through a capacity retaining of 87.65% after 10000 cycles. Furthermore, the Ni-Zn MOF//AC coin-cell asymmetric supercapacitor device (CASD) exhibited remarkable energy and power densities of 54.31 Wh/kg and 825 W/kg, respectively, with adequate capacitance retention up to 94.63% over 5000 cycles at 1.5 V. The CASD also exhibited a significant power density of 4950 W/kg at 19.67 W h/kg, which suggests that these in-situ developed MOF-based electrodes may discover application in energy storage devices.
通过溶剂热反应制备了原位包覆碳布上的无粘结剂二维网状结构镍锌金属有机框架（Ni-Zn MOF/CC）和Ni-Zn MOF粉末，用于电化学储能应用。这些电极的电化学性能表明，在碳布基底上自组装的电极表现出非常优异的性能。Ni-Zn MOF/CC电极在1 A/g电流密度下的电容为653.54 F/g，经过10000次循环后容量保持率为87.65%。此外，Ni-Zn MOF//AC硬币型不对称超级电容器器件（CASD）分别表现出显著的能量密度和功率密度，即54.31 Wh/kg和825 W/kg，在1.5 V电压下经过5000次循环后，电容保持率高达94.63%。该CASD在能量密度为19.67 W h/kg时，功率密度也达到4950 W/kg，这表明这些原位制备的基于MOF的电极可能在储能器件中得到应用。
