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• W4321380257 abstract "Transition metal-based binary and ternary compound arrays were directly grown on a porous Ni foam substrate using a facile one-step hydrothermal method. Transition metals are considered ideal electrode materials for faradaic capacitors because they exhibit a wide range of oxidation states enabling effective redox charge transfer. Furthermore, compounds in which two or more transition metals react can help increase the number of active sites for charge-discharge reactions and provide more valence changes for improved charge transfer. In this work, we fabricated ternary electrodes with Ni, Cu, and Zn ions, exhibiting a larger surface area and higher entropy than those made with binary compounds. The NixCuyZnz-based ternary electrode had a shorter diffusion path for the electrolyte ions owing to its larger surface area. Ternary compounds can increase the entropy of the electrode because of the reaction between atoms of different sizes, bringing about a synergistic effect for high characteristic electrochemical values. The optimized NixCuyZnz(CO3)(OH)2 compound showed a maximum specific capacity of 344 mA h g-1 at a current density of 3 A g-1, which was remarkably higher than that of the binary electrode, and a cycling stability of 84.9% after 5000 cycles. An asymmetric supercapacitor produced with this compound as the positive electrode and graphene as the negative electrode exhibited a high energy density of 36.2 W h kg-1 at a power density of 103.1 W kg-1 and a current density of 2 A g-1. The asymmetric supercapacitor fabricated using the NixCuyZnz(CO3)(OH)2 compound as the positive electrode exhibited excellent electrical properties when used in an illuminated LED device." @default.
• W4321380257 created "2023-02-21" @default.
• W4321380257 creator A5032888224 @default.
• W4321380257 creator A5051996346 @default.
• W4321380257 creator A5058449420 @default.
• W4321380257 creator A5073284312 @default.
• W4321380257 creator A5077039760 @default.
• W4321380257 creator A5042155761 @default.
• W4321380257 date "2023-01-01" @default.
• W4321380257 modified "2023-10-16" @default.
• W4321380257 title "Three-dimensional ternary Ni_<i>x</i>Cu_<i>y</i>Zn_<i>z</i>(CO₃)(OH)₂ electrodes for supercapacitors: electrochemical properties and applications" @default.
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• W4321380257 doi "https://doi.org/10.1039/d3dt00143a" @default.
• W4321380257 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/36807449" @default.
• W4321380257 hasPublicationYear "2023" @default.
• W4321380257 type Work @default.
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