2022
DOI: 10.1002/er.8078
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Supercapacitor performance evaluation of nanostructured Ag‐decoratedCo‐Co3O4composite thin film electrode material

Abstract: Summary Nanostructured Ag‐decorated Co‐Co3O4 composite thin film (Ag/Co‐Co3O4) synthesized on nickel foam (NF) by a combination of cyclic voltammetry and pulse reverse potential electrodeposition modes presents higher specific capacitance and its retention. The higher specific capacitance of 2800 F/g on Ag/Co‐Co3O4/NF composite thin film in comparison with 2580 F/g on Co‐Co3O4/NF at 1 A/g is attributable to the presence of nanostructured Ag in the composite film enhancing the ionic and electronic conductivity … Show more

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Cited by 4 publications
(3 citation statements)
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“…As displayed in Figure 4 d, our device realized a high energy density of 80.5 Wh/kg at the power density of 1.3 kW/kg, while the power density reached 25.4 kW/kg at the energy density of 43.7 Wh/kg. The comprehensive performance is superior or comparable to the recently reported Co 3 O 4 //carbon devices, such as Co 3 O 4 nanosheet (38.8 Wh/kg at 7.5 kW/kg) [ 41 ], Co-Co 3 O 4 (60.8 Wh/kg at 5.8 kW/kg) [ 42 ], Co 3 O 4 nanorod (34.1Wh/kg at 4 kW/kg) [ 43 ], Co 3 O 4 @C nanofiber (37.75 Wh/kg at 1.8 kW/kg) [ 44 ], Cl-doped Co 3 O 4 nanosphere (74 Wh/kg at 0.807 kW/kg, 47 Wh/kg at 24.2 kW/kg) [ 45 ], Co 3 O 4 nanoplate (66.1 Wh/kg at 1.652 kW/kg) [ 46 ], and Co 3 O 4 nanosheet (51.7 Wh/kg at 1.125 kW/kg, 34.7 Wh/kg at 33.75 kW/kg) [ 47 ].…”
Section: Resultsmentioning
confidence: 69%
“…As displayed in Figure 4 d, our device realized a high energy density of 80.5 Wh/kg at the power density of 1.3 kW/kg, while the power density reached 25.4 kW/kg at the energy density of 43.7 Wh/kg. The comprehensive performance is superior or comparable to the recently reported Co 3 O 4 //carbon devices, such as Co 3 O 4 nanosheet (38.8 Wh/kg at 7.5 kW/kg) [ 41 ], Co-Co 3 O 4 (60.8 Wh/kg at 5.8 kW/kg) [ 42 ], Co 3 O 4 nanorod (34.1Wh/kg at 4 kW/kg) [ 43 ], Co 3 O 4 @C nanofiber (37.75 Wh/kg at 1.8 kW/kg) [ 44 ], Cl-doped Co 3 O 4 nanosphere (74 Wh/kg at 0.807 kW/kg, 47 Wh/kg at 24.2 kW/kg) [ 45 ], Co 3 O 4 nanoplate (66.1 Wh/kg at 1.652 kW/kg) [ 46 ], and Co 3 O 4 nanosheet (51.7 Wh/kg at 1.125 kW/kg, 34.7 Wh/kg at 33.75 kW/kg) [ 47 ].…”
Section: Resultsmentioning
confidence: 69%
“…The main peak of Zn-Co@CW at 778.15 eV belongs to Co 2p 3/2 , which comes from the zero-valence state of Co. The main peak of Zn-Co 3 O 4 @CW-230 at 779.6 eV belongs to Co 2p 3/2 , which comes from Co 3+ [ 36 , 40 , 41 ]. This indicates that the simple substance Co is completely oxidized to Co 3 O 4 with a better energy storage effect.…”
Section: Resultsmentioning
confidence: 99%
“…Moreover, silver exhibits remarkable corrosion resistance [5,6]. These favorable characteristics have advanced the utilization of silver in various electrical applications, including supercapacitors and catalysts [7][8][9][10]. However, the performance of silver-based systems varies depending upon the specific method used for their synthesis and their integration with support materials.…”
Section: Introductionmentioning
confidence: 99%