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- W4280491313 abstract "Complex oxides and hydroxides of Ni, Co, and Mn from a precursor mixture were electrochemically deposited on both a cathode and an anode. On the Ni foam cathode, the complex metal hydroxides precipitated as nanolayers at -0.9 V. Simultaneously, the metal ions were oxidized and deposited as blocks on the Ni foam anode. While the concentrations of Ni(NO3)2 and Mn(NO3)2 were constant (80 mM for Ni2+ and 40 mM for Mn2+, respectively), the concentration of Co(NO3)2 was varied from 20 to 120 mM, which affected the morphology and electrochemical properties of the electrode: a Co:Ni:Mn molar ratio resulted in the highest specific capacitance (at a scan rate of 5 mV s-1, 1800 F g-1 for the cathode material and 720 F g-1 for the anode material). This cathode material was assembled into symmetric supercapacitors, which demonstrated an excellent energy density of 39 Wh kg-1 at a power density of 1300 W kg-1 and a high capacitance retention of 90% after 3000 charge/discharge cycles. This high electrochemical performance was attributed to the optimized ratio of metal oxides, and this simple preparation strategy can be applied to other nanocomposites of complex metal oxides/hydroxides with desired characteristics for various applications." @default.
- W4280491313 created "2022-05-22" @default.
- W4280491313 creator A5059940282 @default.
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- W4280491313 date "2022-05-14" @default.
- W4280491313 modified "2023-10-10" @default.
- W4280491313 title "Simultaneous Electrodeposition of Ternary Metal Oxide Nanocomposites for High-Efficiency Supercapacitor Applications" @default.
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- W4280491313 doi "https://doi.org/10.1021/acsomega.2c00826" @default.
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