Porous polypyrrole clusters prepared by electropolymerization for a high performance supercapacitor

Dubal, Deepak P.; Lee, Sang Ho; Kim, Jong Guk; Kim, Won; Lokhande, C.D.

doi:10.1039/c2jm14470k

Cited by 423 publications

(227 citation statements)

References 47 publications

(4 reference statements)

Supporting

Mentioning

215

Contrasting

Order By: Relevance

“…Equivalent circuit included the components related to solution resistance (R S ), charge transfer resistance (R CT ), constant phase elements (Q 1 and Q 2 ), and capacitance (C). Existence of the constant phase elements in the electrode can be attributed to the capacitance of the double layer, the chaotic nature of the diffusion process, or irregularities in the electrode-electrolyte interface [53]. According to the simulated values, total capacitance in three electrolytes increased in the order of LiOH < NaOH < KOH, which was consistent with the charge storage capacitance calculated from GCD and CV measurements (Figure 5a,b).…”

Section: Resultssupporting

confidence: 77%

Orange-Peel-Derived Carbon: Designing Sustainable and High-Performance Supercapacitor Electrodes

Ranaweera

Kahol

Ghimire

et al. 2017

View full text Add to dashboard Cite

Abstract:Interconnected hollow-structured carbon was successfully prepared from a readily available bio-waste precursor (orange peel) by pyrolysis and chemical activation (using KOH), and demonstrated its potential as a high-performing electrode material for energy storage. The surface area and pore size of carbon were controlled by varying the precursor carbon to KOH mass ratio. The specific surface area significantly increased with the increasing amount of KOH, reaching a specific surface area of 2521 m 2 /g for a 1:3 mass ratio of precursor carbon/KOH. However, a 1:1 mass ratio of precursor carbon/KOH displayed the optimum charge storage capacitance of 407 F/g, owing to the ideal combination of micro-and mesopores and a higher degree of graphitization. The capacitive performance varied with the electrolyte employed. The orange-peel-derived electrode in KOH electrolyte displayed the maximum capacitance and optimum rate capability. The orange-peel-derived electrode maintained above 100% capacitance retention during 5000 cyclic tests and identical charge storage over different bending status. The fabricated supercapacitor device delivered high energy density (100.4 µWh/cm 2 ) and power density (6.87 mW/cm 2 ), along with improved performance at elevated temperatures. Our study demonstrates that bio-waste can be easily converted into a high-performance and efficient energy storage device by employing a carefully architected electrode-electrolyte system.

show abstract

Section: Resultssupporting

confidence: 77%

Orange-Peel-Derived Carbon: Designing Sustainable and High-Performance Supercapacitor Electrodes

Ranaweera

Kahol

Ghimire

et al. 2017

View full text Add to dashboard Cite

show abstract

“…Conducting polymers/reduced graphene oxide composites were investigated in [98]. Polyaniline, polypyrrole and poly(3,4ethylenedioxythiophene) (PEDOT) were deposited on the surface of reduced graphene sheets with different concentrations of these conducting polymers.…”

Section: Conducting Polymers and Their Compositesmentioning

confidence: 99%

Supercapacitors specialities - Materials review

Obreja

2014

AIP Conference Proceedings

View full text Add to dashboard Cite

“…All reagents employed were of American Chemical Society (ACS) grade or finer and were used without further purification unless otherwise stated. The fabrication of a microporous overcoating by electro-polymerization of polypyrrole (PPy) was carried out using a conventional method [24][25][26]. Stainless steel discs (UNS S31603) (25mm diameter) were used as the working electrode in a standard potentiostatic three-electrode cell system (galvanostat Model 263A controlled via corrware software).…”

Section: Methodsmentioning

confidence: 99%

Liquid infused porous surfaces for mineral fouling mitigation

Charpentier

Neville

Baudin

et al. 2015

Journal of Colloid and Interface Science

View full text Add to dashboard Cite

Preventing mineral fouling, known as scale, is a long-standing problem for a broad range of industrial applications ranging from oil production to water treatment systems to names 2 but a few. The build-up of inorganic scale such as calcium carbonate on surfaces and facilities is undesirable as it can result in safety risks and associated flow assurance issues. To date the overwhelming amount of research has mainly focused on chemical inhibition of scale bulk precipitation and little attention has been paid to deposition onto surfaces. The development of novel more environmentally-friendly strategies to control mineral fouling will most probably necessitate a multifunctional approach including surface engineering. In this study, we demonstrate that liquid infused porous surfaces provide an appealing strategy for surface modification to reduce mineral scale deposition. Microporous polypyrrole (PPy) coatings were fabricated onto stainless steel substrates by electrodeposition in potentiostatic mode. Subsequent infusion of low surface energy lubricants (fluorinated oil Fluorinert FC-70 and ionic liquid 1-Butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide (BMIm) ) into the porous coatings results in liquid-repellent slippery surfaces.To assess their ability to reduce surface scaling the coatings were subjected to a calcium carbonate scaling environment and the scale on the surface was quantified using Inductively Coupled Plasma Atomic Emission Spectroscopy (ICP-AES). PPy surfaces infused with BMIm (and Fluorinert to a lesser extent) exhibit remarkable antifouling properties with the calcium carbonate deposition reduced by 18 times in comparison to untreated stainless steel. These scaling tests suggest a correlation between the stability of the liquid infused surfaces in artificial brines and fouling reduction efficiency. The current work shows the great potential of such novel coatings for the management of mineral scale fouling.

show abstract

Porous polypyrrole clusters prepared by electropolymerization for a high performance supercapacitor

Cited by 423 publications

References 47 publications

Orange-Peel-Derived Carbon: Designing Sustainable and High-Performance Supercapacitor Electrodes

Orange-Peel-Derived Carbon: Designing Sustainable and High-Performance Supercapacitor Electrodes

Supercapacitors specialities - Materials review

Liquid infused porous surfaces for mineral fouling mitigation

Contact Info

Product

Resources

About