Abstract
Herein, an ordered cobalt carbonate hydroxide@nickel vanadium double hydroxides with multiple morphologies nanocomposite (Co-CH@NiV-DH) was assembled using a two-step hydrothermal method at a consistent temperature. The ordered Co-CH plays a crucial role in inducing the formation of multi-morphology NiV-DH, leading to exceptional electrochemical performance. Specifically, The Co-CH@NiV-DH exhibits an impressive specific capacitance of 1318 F g−1 at a current density of 1 A g−1. Moreover, Co-CH@NiV-DH//AC could achieve a maximum energy density of 34.7 Wh kg−1 and retains approximately 81.4 % of its initial capacitance value while consistently exhibiting Coulombic efficiency values close to 100 % after undergoing GCD testing for 5000 cycles, demonstrating remarkable cycling stability. This work highlights the significant implications of employing a two-step hydrothermal technique at identical temperatures along with oriented materials to induce varied morphologies in transition metal hydroxides for advancing electrode materials in supercapacitors.
Published Version
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