Fabrication of 3D vertically aligned silver nanoplates on nickel foam-graphene substrate by a novel electrodeposition with sonication for efficient supercapacitors

Usman, Muhammad; Pan, Lujun; Sohail, Amjad; Mahmood, Zafar; Cui, Ruixue

doi:10.1016/j.cej.2016.11.105

Cited by 40 publications

(22 citation statements)

References 71 publications

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“…When the current density is 2 mA cm −2 , the coulombic efficiency reaches 88.3%, which illustrates the great redox reversibility of the pseudocapacitive material. Furthermore, the tiny plateaus at about 0.17 V in GCD curve should attribute to the redox pair Ag/Ag + , consistent with the CV measurements and previous reports [26,28]. Moreover, the electrochemical properties of the Ni(OH) 2 and Ag electrode were also performed for comparison.…”

Section: Resultssupporting

confidence: 88%

“…The low RESR is attributed to the direct growth of AgNCs on copper foam substrate, which ensures a close bonding between them. Meanwhile, Ag nanostructures with good In addition, a pair of weak redox peak of oxidation (0.3 V) and reduction peaks (0.1 V) can be attributed to the redox couple of Ag/Ag + [21,[26][27][28]. It is noteworthy that the current response increases with increasing scan rates, and the potential of oxidation peak and reduction peak moves to more positive and negative directions, respectively, and the specific capacity decreases accordingly.…”

Section: Resultsmentioning

confidence: 97%

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In Situ Construction of Ag/Ni(OH)2 Composite Electrode by Combining Electroless Deposition Technology with Electrodeposition

Yang

Chu

et al. 2019

Metals

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The Ag/Ni(OH)2 composite electrode has been designed and in situ constructed on a copper substrate by combining electroless deposition technology with electrodeposition. The products can be directly used as a high performance binder free electrode. The synergistic effect between the Ag nanocubes (AgNCs) as backbones and the deposited Ni(OH)2 as the shell can significantly improve the electrochemical properties of the composite electrode. Moreover, this in situ growth strategy forms a strong bonding force of active materials to the substrate, which can improve the cycling performance and lower the equivalent series resistance. The Ag/Ni(OH)2 composite electrode exhibits enhanced electrochemical properties with a high specific capacitance of 3.704 F cm−2, coulombic efficiency of 88.3% and long-term cyclic stability.

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Section: Resultssupporting

confidence: 88%

Section: Resultsmentioning

confidence: 97%

In Situ Construction of Ag/Ni(OH)2 Composite Electrode by Combining Electroless Deposition Technology with Electrodeposition

Yang

Chu

et al. 2019

Metals

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“…7,11,[13][14][15][16] There are many studies about carbon material applied as supercapacitor electrodes relating the increase of energy and power density with the deposition of silver particles. [17][18][19][20][21][22] According to these studies, the presence of silver particles contributes to improve the electrical charge transfer, which results in an enhancement in the electrochemical performances of the composites. Kim and Park 23 studied the effect of the incorporation of silver nanoparticles on graphite nanofibers and PAni electrodes and found that silver considerably increases the specific capacitance, as well as increases the electrochemical utilization of the electrodes.…”

Section: Introductionmentioning

confidence: 99%

Ag@Activated Carbon Felt Composite as Electrode for Supercapacitors and a Study of Three Different Aqueous Electrolytes

Rodrigues

Silva

Quirino³

et al. 2018

Mat. Res.

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The main challenge for the development of a high efficiency supercapacitor is the electrode material. Developing electrode materials with high specific electrical capacitance and low electrical resistance enables an increase in the energy accumulated in the device. In addition, it is expected that the electrode material presents a simple procedure for preparation having low production cost and being environmentally friendly. This work is based on the deposition of silver nanoparticles on activated carbon felt (Ag@ACF) as a supercapacitor electrode. The samples were characterized by field emission gun scanning electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy and textural analysis. Supercapacitor behavior was evaluated by galvanostatic charge-discharge curves, cyclic voltammetry and electrochemical impedance spectroscopy using a symmetrical two-electrode Swagelok type cell, and three different aqueous solution electrolytes: 2 M H 2 SO 4 , 6 M KOH and 1 M Na 2 SO 4. Ag@ACF presented a high specific capacitance in KOH, about 170 F g-1 , which makes it an interesting material for supercapacitor electrodes and it showed good specific electrical capacitance, low resistance and high cyclability.

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“…As a noble metal, Ag particles can produce electron transfer channels because of their outstanding electronic conductivity and durability. 22,23 They also enhance the proton (H + ) diffusion throughout the electrode. 24 Vanitha et al ) was immersed in AgNO 3 aqueous solution (10 mL, 0.01 M) and then heated at 100 C for 5 h. Finally, the sample was washed with DI water and dried at 60 C for 12 h.…”

mentioning

confidence: 99%

Silver particle-loaded nickel oxide nanosheet arrays on nickel foam as advanced binder-free electrodes for aqueous asymmetric supercapacitors

Hui

Hui³

et al. 2017

RSC Adv.

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Conductive metal loading is an efficient approach for enhancing the electric conductivity of redox-active transition-metal oxide electrodes. In this study, Ag particle-loaded NiO/nickel foam (Ag-NiO/NF) composites were fabricated using a green chemistry method. The anchored Ag particles standing on the surface of NiO nanosheet arrays helped improve the electrical conductivity and were thus beneficial for supercapacitors (SCs). The as-developed Ag-NiO/NF electrode delivered a specific capacitance of 1254.9 F g À1 at the current density of 1 A g À1, which is higher than that of NiO/NF electrode). Using such Ag-NiO/NF as a positive electrode, we further fabricated aqueous asymmetric SC devices with reduced graphene oxide as a negative electrode. Owing to the efficient electron transport and short ion diffusion paths in the designed electrode, the devices exhibited a high specific capacitance of 97.9 F g at 1 A g À1 with a high energy density of 26.7 W h kg À1 at a power density of 1017.1 W kg À1 and great cyclic stability.

show abstract

Fabrication of 3D vertically aligned silver nanoplates on nickel foam-graphene substrate by a novel electrodeposition with sonication for efficient supercapacitors

Cited by 40 publications

References 71 publications

In Situ Construction of Ag/Ni(OH)2 Composite Electrode by Combining Electroless Deposition Technology with Electrodeposition

In Situ Construction of Ag/Ni(OH)2 Composite Electrode by Combining Electroless Deposition Technology with Electrodeposition

Ag@Activated Carbon Felt Composite as Electrode for Supercapacitors and a Study of Three Different Aqueous Electrolytes

Silver particle-loaded nickel oxide nanosheet arrays on nickel foam as advanced binder-free electrodes for aqueous asymmetric supercapacitors

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