High performance solid-state supercapacitor with PVA–KOH–K3[Fe(CN)6] gel polymer as electrolyte and separator

Ma, Guofu; Li, Jiajia; Sun, Kanjun; Peng, Hui; Mu, Jingjing; Lei, Ziqiang

doi:10.1016/j.jpowsour.2014.01.062

Cited by 169 publications

(75 citation statements)

References 44 publications

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“…Chemical structure of various polymers for the self-healing energy harvesting and storage devices. a) PVA: poly(vinyl alcohol) [99,127,128] , b) PAA: polyacrylic acid [71,80,97,98] , c) PDMS: polydimethylsiloxane [42,77,83] , d) PDMAA: poly(N,N-dimethylacrylamide) [51,52] , e) PMCMA-co-PCMA: poly[2-(ethylcarbamoyloxy)ethyl methacrylate-co-2-(ethylcarbamoyloxy)ethyl acrylate [56] ], f) PCL: polycaprolactone [69,75] , g) bPEI: branched polyethylenimine [62,71,80] , h) PU: polyurethane. [43,81,[91][92][93] www.advancedsciencenews.com Adv.…”

Section: Discussionmentioning

confidence: 99%

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Self‐Healing Materials for Next‐Generation Energy Harvesting and Storage Devices

Chen

Wang

Yang

et al. 2017

Advanced Energy Materials

221

174

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Because of the great breakthroughs of self‐healing materials in the past decade, endowing devices with self‐healing ability has emerged as a particularly promising route to effectively enhance the device durability and functionality. This article summarizes recent advances in self‐healing materials developed for energy harvesting and storage devices (e.g., nanogenerators, solar cells, supercapacitors, and lithium‐ion batteries) over the past decade. This review first introduces the main self‐healing mechanisms among different materials including insulators, electrical conductors, semiconductors, and ionic conductors. Then, the basic concepts, fabrication techniques, and healing performances of the newly developed self‐healing energy harvesting (nanogenerators and solar cells) and storage (supercapacitors and lithium‐ion batteries) devices are described in detail. Finally, the existing challenges and promising solutions of self‐healing materials and devices are discussed.

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Section: Discussionmentioning

confidence: 99%

“…[127,128] Wang et al reported the first example of self-healing PVA hydrogel electrolyte grafted with PAA based on dynamic diol-borate ester bonding (Figure 9a). [99] The PAA moiety provided the PVA hydrogel electrolyte with good flexibility, high ionic conductivity, and improving salt-tolerance.…”

Section: Self-healing Electrolytes For Supercapacitorsmentioning

confidence: 99%

Self‐Healing Materials for Next‐Generation Energy Harvesting and Storage Devices

Chen

Wang

Yang

et al. 2017

Advanced Energy Materials

221

174

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“…In nanocomposites, dividing the fillers to much smaller volumes decreases the number of defect and stress concentrator sites per filler (i.e., nanoparticle) and increases its survival rate under extreme loading. The nanometer size of the fillers also account for novel chemical, optical and other physical properties [12][13][14].…”

Section: Chapter 1 Introductionmentioning

confidence: 99%

Ag-Nylon Nanocomposites by Dynamic Emulsion Polycondensation

2016

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The present work demonstrates a novel technique for dispersing nanofillers in a thermoplastic polymer, where polymerization and dispersion of the nanofillers occur simultaneously via dynamic emulsion polycondensation at ambient temperature. The composite is manufactured in the form of a uniform powder, which can then be molded into desired shape by melting or sintering. The technique is demonstrated for Ag nanowire / Nylon 66 composites. In this demonstration, Ag nanowires are synthesized by the polyol process. Polyvinylprrolidone (PVP) is used to functionalize the Ag nanowires. Nanocomposites with varying Ag content are prepared and investigated. The nanowires are found to be monodispersed and hydrogen-bonded to the Nylon 66 matrix through PVP. Glass transition temperature of the composites decreases from 61 to 48 °C with Ag weight fraction increasing from 0 to 6.47%. The depression of the glass transition temperature is owed to the plasticizer effect as well as heterogeneous nucleation effect of the nanowires for polymerization leading to shorter chain length.

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“…18 The same activated carbon electrode was tested in PVA-KOH-K 3 [Fe(CN) 6 ] gel electrolyte by the same authors and the material showed a specific capacitance as high as 431 F g −1 , energy and power densities values of 57.94 Wh kg −1 and 59.84 kW kg −1 , respectively. 19 The excellent good electrochemical performance was attributed to high ionic conductivity of gel electrolyte and the contribution from the reversible redox reaction of K 3 [Fe(CN) 6 ] and its quick electron relay at the electrode-electrolyte interface. 19 Ramasamy et al reported activated carbon supercapacitor using a gel electrolyte of sodium salt-polyethylene oxide in an organic mixture solvent with the cell operating at a stable potential window of 2.5 V and exhibiting a specific capacitance of 24 F g −1 , real power of 0.52 kW kg −1 , and energy density of 18.7 Wh kg −1 .…”

Section: Introductionmentioning

confidence: 99%

“…19 The excellent good electrochemical performance was attributed to high ionic conductivity of gel electrolyte and the contribution from the reversible redox reaction of K 3 [Fe(CN) 6 ] and its quick electron relay at the electrode-electrolyte interface. 19 Ramasamy et al reported activated carbon supercapacitor using a gel electrolyte of sodium salt-polyethylene oxide in an organic mixture solvent with the cell operating at a stable potential window of 2.5 V and exhibiting a specific capacitance of 24 F g −1 , real power of 0.52 kW kg −1 , and energy density of 18.7 Wh kg −1 . Gao et al also tested an asymmetric capacitor via paper-like carbon nanotube-manganese oxide electrodes based on potassium polyacrylate gel-based with a cell voltage of 1.8 V, a stable cycling performance (capacitance retention of 86.0 % after 10,000 continuous charge/discharge cycles) and energy of density (32.7 Wh kg −1 ).…”

Section: Introductionmentioning

confidence: 99%

Effect of conductive additives to gel electrolytes on activated carbon-based supercapacitors

et al. 2015

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This article is focused on polymer based gel electrolyte due to the fact that polymers are cheap and can be used to achieve extended potential window for improved energy density of the supercapacitor devices when compared to aqueous electrolytes. Electrochemical characterization of a symmetric supercapacitor devices based on activated carbon in different polyvinyl alcohol (PVA) based gel electrolytes was carried out. The device exhibited a maximum energy density of 24 Wh kg−1 when carbon black was added to the gel electrolyte as conductive additive. The good energy density was correlated with the improved conductivity of the electrolyte medium which is favorable for fast ion transport in this relatively viscous environment. Most importantly, the device remained stable with no capacitance lost after 10,000 cycles.

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High performance solid-state supercapacitor with PVA–KOH–K3[Fe(CN)6] gel polymer as electrolyte and separator

Cited by 169 publications

References 44 publications

Self‐Healing Materials for Next‐Generation Energy Harvesting and Storage Devices

Self‐Healing Materials for Next‐Generation Energy Harvesting and Storage Devices

Ag-Nylon Nanocomposites by Dynamic Emulsion Polycondensation

Effect of conductive additives to gel electrolytes on activated carbon-based supercapacitors

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