Journal
JOURNAL OF ENERGY STORAGE
Volume 35, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.est.2021.102249
Keywords
Trimetallic Oxide; Hierarchical Mesoporous Array; Symmetric supercapacitor; Capacitance retention; Multi-metallic ions synergy
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Funding
- Department of Science & Technology (DST), the Government of India
- University Grants Commission (UGC), the Government of India under the University with Potential for Excellence (UPEII) scheme
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A facile hydrothermal technique with subsequent calcination procedure was used to synthesize Cu-Ni-Co (CNCo) based trimetallic oxide nanowires, showing high specific capacitance and excellent rate capability. The CNCo electrode exhibited superior performance compared to one-dimensional binary and monoxides nanoforms, indicating its potential as a robust electrode material.
Imperative urgency to substitute outdated combustion engines with safer, faster and efficient energy storage devices and conversion systems has inspired researchers to realize new energy storage materials with high performance. In this work, a facile hydrothermal technique with subsequent calcination procedure has been adopted to prepare Cu-Ni-Co (CNCo) based trimetallic oxide nanowires over carbon cloth (CC). Hierarchical mesoporous CNCo arrays on conducting scaffold delivers excellent supercapacitive performance with specific capacitance as high as 2535 Fg(-1) at current density of 1 Ag-1 and excellent rate capability of 94% at 5 Ag-1 even after 5000 cycles. To judge the figure of merit of CNCo electrode, results are compared with the synthesized one-dimensional binary and monoxides nanoform over same platform namely nickel cobalt oxide (NCo) and cobalt oxide (Co). Utility of CNCo as robust and potential electrode material is further assessed by fabricating CNCo based symmetric supercapacitor. Specific energy of 39 Wh/kg at specific power of 0.45 KW/kg and extraordinary cyclic stability (capacitance retention more than 100% after 10000 cycles) register from the fabricated device. Coordination of metal ions strengthens the synergistic effect which affects the rate of redox charge transfer and thereby improves the cyclic stability and rate capability.
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