@article{Nagaraju_Sekhar_Ramulu_Hussain_Narsimulu_Yu_2020, title={Ternary MOF-Based Redox Active Sites Enabled 3D-on-2D Nanoarchitectured Battery-Type Electrodes for High-Energy-Density Supercapatteries}, volume={13}, url={https://www.nmlett.org/index.php/nml/article/view/694}, DOI={10.1007/s40820-020-00528-9}, abstractNote={<p>Designing rationally combined metal–organic frameworks (MOFs) with multifunctional nanogeometries is of significant research interest to enable the electrochemical properties in advanced energy storage devices. Herein, we explored a new class of binder-free dual-layered Ni–Co–Mn-based MOFs (NCM-based MOFs) with three-dimensional&nbsp;(3D)-on-2D nanoarchitectures through a polarity-induced solution-phase method for high-performance supercapatteries. The hierarchical NCM-based MOFs having grown on nickel foam exhibit a battery-type charge storage mechanism with superior areal capacity (1311.4&nbsp;μAh cm<sup>−2</sup> at 5&nbsp;mA&nbsp;cm<sup>−2</sup>), good rate capability (61.8%; 811.67 μAh cm<sup>−2</sup> at 50&nbsp;mA&nbsp;cm<sup>−2</sup>), and an excellent cycling durability. The superior charge storage properties are ascribed to the synergistic features, higher accessible active sites of dual-layered nanogeometries, and exalted redox chemistry of multi metallic guest species, respectively. The bilayered NCM-based MOFs are further employed as a battery-type electrode for the fabrication of supercapattery paradigm with biomass-derived nitrogen/oxygen doped porous carbon as a negative electrode, which demonstrates excellent capacity of 1.6&nbsp;mAh cm<sup>−2</sup> along with high energy and power densities of 1.21&nbsp;mWh cm<sup>−2</sup> and 32.49&nbsp;mW cm<sup>−2</sup>, respectively. Following, the MOF-based supercapattery was further assembled with a renewable solar power harvester to use as a self-charging station for various portable electronic applications.</p> <p>Highlights:</p> <p>1 Redox chemistry enabled Ni–Co–Mn (NCM)-based MOF nanoarchitectures are used as battery-type electrodes.<br>2 The NCM-based MOFs demonstrate high areal capacity and good cycling stability.<br>3 The fabricated hybrid supercapattery showed high energy and power densities of 1.21 mWh cm<sup>−2</sup> and 32.49 mW cm<sup>−2</sup>, respectively.</p>}, journal={Nano-Micro Letters}, author={Nagaraju, Goli and Sekhar, S. Chandra and Ramulu, Bhimanaboina and Hussain, Sk. Khaja and Narsimulu, D. and Yu, Jae Su}, year={2020}, month={Nov.}, pages={17} }