All solid-state electric double-layer capacitors based on alkaline polyvinyl alcohol polymer electrolytes

Yang, Chun‐Chen; Hsu, Sung-Ting; Chien, Wen-Chen

doi:10.1016/j.jpowsour.2005.03.004

Cited by 177 publications

(93 citation statements)

References 24 publications

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“…However, they are limited by low electrochemical performance when compared to the other types of electrolytes because of their low ionic mobility and poor contact at the electrolyte-electrode interface. 30 In order to improve the electrochemical performance of SCs in solid state electrolytes, aqueous electrolytes, 31,32 redox active materials [33][34][35][36][37][38] and transition metal ion complexes 39 are employed as additives which boost their overall performance.…”

Section: 21mentioning

confidence: 99%

Enhanced electrochemical response of activated carbon nanostructures from tree-bark biomass waste in polymer-gel active electrolytes

et al. 2017

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Activated carbon (ACB) obtained from tree bark waste biomass was obtained by adopting an optimized activation and carbonization route using potassium hydroxide (KOH) pellets. The morphological and structural characteristics of the optimized carbon material revealed a porous network suitable for charge storage. The potential of the ACB material as a suitable supercapacitor electrode was investigated in a symmetric two electrode cell configuration using a polymer-gel/KOH active electrolyte. The KOH was included to improve ionic mobility within the polyvinyl alcohol (PVA) gel, while carbon acetylene black and a polymer-fullerene blend acted as the conductive additives. The cell exhibited an EDLC behaviour in all electrolytes with the PVA/KOH/carbon black (PKCB) electrolyte portraying the best electrochemical response with a 1.4 V voltage window. A specific capacitance (C SP ) of $227 F g À1 was obtained with a corresponding energy density of 15.5 W h kg À1 and power density of 700 W kg À1 at a current density of 0.5 A g À1. An excellent stability was exhibited with a coulombic efficiency of 98% after 5000 continuous cycles at 5.0 A g À1 and a slight deterioration of the ideal electrochemical behavior was observed after further subjecting the electrode to a floating test for 120 h (5 days) at 1.4 V. Interestingly, the gel-based electrolyte showed a peculiar "recuperating behavior" after further floating process and negligible charge loss after a self-discharge process for 30 h at 1.0 A g À1 which demonstrates the viability for adopting gel-electrolytes in SC devices from plant biomass waste.

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Section: 21mentioning

confidence: 99%

Enhanced electrochemical response of activated carbon nanostructures from tree-bark biomass waste in polymer-gel active electrolytes

et al. 2017

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“…[9][10][11][12] They are also characterized by wider electro-chemical potential window (> 4 V). 13,14 Polymer gel based electrolytes have been used in electrochemical supercapacitors applications, for example polyvinyl alcohol (PVA)-KOH, 15 PVA-H 2 SO 4 16 and PVA-H 3 PO 4 . 17 Recently, Ma et al reported a redox-mediated P-phenylenediamine doped polyvinyl alcohol gel electrolyte (PVA-KOH-PPD) as electrolyte and separator, and activated carbon as electrodes for symmetric supercapacitor with excellent electrochemical performance.…”

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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“…or newly developed electrolytes. Beside active research activities in developing high surface area electrodes and high efficient electrolytes, there has also been growing research activities in developing supercapacitor separators; covering materials such as polypropylene [11], eggshell membrane [12], polyvinyl alcohol (PVA) [13], filter paper [14] and Teflon ring [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Nanoporous separators for supercapacitor using activated carbon monolith electrode from oil palm empty fruit bunches

Nor

Deraman

Omar

et al. 2014

AIP Conference Proceedings

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All solid-state electric double-layer capacitors based on alkaline polyvinyl alcohol polymer electrolytes

Cited by 177 publications

References 24 publications

Enhanced electrochemical response of activated carbon nanostructures from tree-bark biomass waste in polymer-gel active electrolytes

Enhanced electrochemical response of activated carbon nanostructures from tree-bark biomass waste in polymer-gel active electrolytes

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

Nanoporous separators for supercapacitor using activated carbon monolith electrode from oil palm empty fruit bunches

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