Journal
JOURNAL OF ENERGY STORAGE
Volume 63, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.est.2023.106993
Keywords
BCO; Hydrothermal; Supercapacitor; Trasatti; Nanoflakes
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This study describes the synthesis of crystalline BCO nanoflakes as a supercapacitor electrode material using a simple, one-step hydrothermal method. The BCO material exhibits high specific capacity and energy and power densities.
To address the energy needs of the modern world, there is an increasing demand for low-cost energy storage systems with high energy and high power densities. Due to their extraordinary ability to store energy, nanocomposite electrodes have a significant role in supercapacitor applications. The current work describes a simple, one-step hydrothermal synthesis of crystalline BCO nanoflakes (NFs) that is inexpensive and effective for use as a supercapacitor electrode material. The crystal structure and phase formation of BCO material were identified with the help of XRD and FTIR analysis, respectively. FE-SEM analysis is used to confirm that the hierarchical BCO nanoflakes are made of bismuth wrapped around copper. Using a half-cell arrangement and a 6 M KOH electrolyte, the as-fabricated Bi2CuO4 (BCO) nanoflakes-based symmetric supercapacitor displays a specific capacity of 1842 C/g at 3 A/g current density. The trasatti method demonstrates the synergetic charge storage redox behavior of 92.9 % and capacitive behavior of 7.1 %, respectively. The cyclic stability shows an outstanding 88 % capacitance retention over 10,000 cycles in a two-electrode system. The symmetric cell with BCO material exhibits a high specific capacity of 652 C/g at 1 A/g current density with 41 Wh kg(-1) energy and power density of 899 W kg(-1), respectively.
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