Solution-free self-assembled growth of ordered tricopper phosphide for efficient and stable hybrid supercapacitor

Chodankar, Nilesh R.; Shinde, Pragati A.; Patil, Swati J.; Hwang, Seung Kyu; Raju, Ganji Seeta Rama; Ranjith, Kugalur Shanmugam; Dubal, Deepak P.; Huh, Yun Suk

doi:10.1016/j.ensm.2021.04.023

Cited by 43 publications

(28 citation statements)

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“…The kinetic analysis of charge storage properties of the electrodes was performed using equation [ 40 , 41 , 42 , 43 , 44 ]: I = aν b where I is the current, ν is the scan rate, and a and b are parameters. Parameter b was found to be 0.73 ( Supplementary information, Figure S1 ).…”

Section: Resultsmentioning

confidence: 99%

“…Parameter b was found to be 0.73 ( Supplementary information, Figure S1 ). According to the literature [ 40 , 41 , 42 , 43 , 44 ], b = 0.5 for a battery-type materials and b = 1 for double-layer capacitive materials. The electrodes with 0.5 < b < 1 combine battery and capacitive properties.…”

Section: Resultsmentioning

confidence: 99%

“…Testing was performed using a 3-electrode electrochemical cell containing a working electrode (impregnated Ni foam), counter-electrode (Pt mesh), and a reference electrode (SCE, saturated calomel electrode). The kinetic analysis of electrode performance was performed as described in [ 40 , 41 , 42 , 43 , 44 ] and presented in Supplementary Materials . The capacitive properties of electrode material were presented in gravimetric (C m , Fg −1 ) and areal (C S , F cm −2 ) capacitance forms.…”

Section: Methodsmentioning

confidence: 99%

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Application of Rhamnolipids as Dispersing Agents for the Fabrication of Composite MnO2-Carbon Nanotube Electrodes for Supercapacitors

Liang

Zhitomirsky

2022

Molecules

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The high theoretical capacitance of MnO2 renders it a promising material for the cathodes of asymmetric supercapacitors. The good dispersion of MnO2 and conductive additives in a nanocomposite electrode is a key factor for efficient electrode performance. This article describes, for the first time, the application of rhamnolipids (RL) as efficient natural biosurfactants for the fabrication of nanocomposite MnO2-carbon nanotube electrodes for supercapacitors. RL act as co-dispersants for MnO2 and carbon nanotubes and facilitate their efficient mixing, which allows for advanced capacitive properties at an active mass of 40 mg cm−2 in Na2SO4 electrolytes. The highest capacitance obtained from the cyclic voltammetry data at a scan rate of 2 mV s−1 is 8.10 F cm−2 (202.6 F g−1). The highest capacitance obtained from the galvanostatic charge–discharge data at a current density of 3 mA cm−2 is 8.65 F cm−2 (216.16 F g−1). The obtained capacitances are higher than the capacitances of MnO2-based electrodes of the same active mass reported in the literature. The approach developed in this investigation is simple compared to other techniques used for the fabrication of electrodes with high active mass. It offers advantages of using a biocompatible RL biosurfactant.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Application of Rhamnolipids as Dispersing Agents for the Fabrication of Composite MnO2-Carbon Nanotube Electrodes for Supercapacitors

Liang

Zhitomirsky

2022

Molecules

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“…S6(c) and (d)†). However, we selected an operating voltage window of 0–1.0 V to examine the reversibility of the electrode materials and electrolyte over thousands of cycles, 45,46 and all further electrochemical measurements were performed within this voltage window. The CV curves for the assembled SC cell at various scan rates showed quasi-rectangular-shaped profiles at all scan rates, suggesting its good capacitive behavior and excellent power handling capability.…”

Section: Resultsmentioning

confidence: 99%

A durable high-energy implantable energy storage system with binder-free electrodes useable in body fluids

et al. 2022

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“…Supercapacitors are more flexible to a demanding work environment because of their superior performance in charge-discharge cycles, high power density, and high storage [1,2]. Supercapacitors, also known as ultra-capacitors, are alternative energy storage devices that help to reduce the use of fossil fuels and other environmental issues such as air pollution [3].…”

Section: Introductionmentioning

confidence: 99%

Novel NiMgOH-rGO-Based Nanostructured Hybrids for Electrochemical Energy Storage Supercapacitor Applications: Effect of Reducing Agents

Konda

Kumar

Rajani³

et al. 2021

Crystals

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This paper describes the synthesis and characterization of NiMgOH-rGO nanocomposites made using a chemical co-precipitation technique with various reducing agents (e.g., NaOH and NH4OH) and reduced graphene oxide at 0.5, 1, and 1.5 percent by weight. UV-visible spectroscopy, Fourier-transform infrared spectroscopy, X-ray diffraction, a particle size analyzer, and cyclic voltammetry were used to characterize the composite materials. The formation of the NiMgOH-rGO nanocomposite with crystallite sizes in the range of 10–40 nm was inferred by X-ray diffraction patterns of materials, which suggested interlayers of Ni(OH)2 and Mg(OH)2. The interactions between the molecules were detected using Fourier-transform infrared spectroscopy, while optical properties were studied using UV-visible spectroscopy. A uniform average particle size distribution in the range of 1–100 nm was confirmed by the particle size analyzer. Using cyclic voltammetry and galvanostatic charge/discharge measurements in a 6 M KOH solution, the electrochemical execution of NiMgOH-rGO nanocomposites was investigated. At a 1 A/g current density, the NiMgOH-rGO nanocomposites prepared with NH4OH as a reducing agent had a higher specific capacitance of 1977 F/g. The electrochemical studies confirmed that combining rGO with NiMgOH increased conductivity.

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Solution-free self-assembled growth of ordered tricopper phosphide for efficient and stable hybrid supercapacitor

Cited by 43 publications

References 50 publications

Application of Rhamnolipids as Dispersing Agents for the Fabrication of Composite MnO2-Carbon Nanotube Electrodes for Supercapacitors

Application of Rhamnolipids as Dispersing Agents for the Fabrication of Composite MnO2-Carbon Nanotube Electrodes for Supercapacitors

A durable high-energy implantable energy storage system with binder-free electrodes useable in body fluids

Novel NiMgOH-rGO-Based Nanostructured Hybrids for Electrochemical Energy Storage Supercapacitor Applications: Effect of Reducing Agents

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