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Recently, transition-metal-based hydroxide materials have attracted significant attention in various electrochemical applications owing to their low cost, high stability, and versatility in composition and morphology. Among these applications, transition-metal-based hydroxides have exhibited significant potential in supercapacitors owing to their multiple redox states that can considerably enhance the supercapacitance performance. In this study, nanostructured Ni-Mn double hydroxide is directly grown on a conductive substrate using an electrodeposition method. Ni-Mn double hydroxide exhibits excellent electrochemical charge-storage properties in a 1 M KOH electrolyte, such as a specific capacitance of 1364 Fg-1 at a current density of 1 mAcm-2and a capacitance retention of 94% over 3000 charge-discharge cycles at a current density of 10 mAcm-2. The present work demonstrates a scalable, time-saving, and cost-effective approach for the preparation of Ni-Mn double hydroxide with potential application in high-charge-storage kinetics, which can also be extended for other transition-metal-based double hydroxides.
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참고문헌 (15)
참고문헌 신청
Y. Liu / 2017 / Design of Hierarchical Ni-Co@ Ni-Co Layered Double Hydroxide Core-Shell Structured Nanotube Array for High-Performance Flexible All-Solid-State BatteryType Supercapacitors / Adv. Funct. Mater. 27(8):1605307
X. Zhao / 2011 / The role of nanomaterials in redox-based supercapacitors for next generation energy storage devices / Nanoscale 3:839~855
H. Chen / 2016 / Carbon-coated hierarchical NiMn layered double hydroxide nanoarrays on Ni foam for flexible high-capacitance supercapacitors / Electrochim. Acta 213:55~65
J. H. Kim / 2007 / Modified atomic layer deposition of RuO2 thin films for capacitor electrodes / Appl. Phys. Lett. 91:052908
R. B. Pujari / 2019 / Vertically aligned nanostructured FeOOH@MnO2 core shell electrode with better areal capacitance / J. Power Sources 436:226826
X. Zhao / 2011 / The role of nanomaterials in redox-based supercapacitors for next generation energy storage devices / Nanoscale 3:839~855
H. Chen / 2016 / Carbon-coated hierarchical NiMn layered double hydroxide nanoarrays on Ni foam for flexible high-capacitance supercapacitors / Electrochim. Acta 213:55~65
J. H. Kim / 2007 / Modified atomic layer deposition of RuO2 thin films for capacitor electrodes / Appl. Phys. Lett. 91:052908
R. B. Pujari / 2019 / Vertically aligned nanostructured FeOOH@MnO2 core shell electrode with better areal capacitance / J. Power Sources 436:226826
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