Proton-conducting gel electrolyte

Chandra, Suresh; Sekhon, S. S.; Srivastava, Ritu; Arora, Narinder

doi:10.1016/s0167-2738(02)00505-2

Cited by 47 publications

(30 citation statements)

References 14 publications

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“…Furthermore, an important point may be noted that the electrical conductivity of the gel electrolytes containing even 10 wt.% of the host polymer PVdF-HFP is slightly higher than that of the liquid electrolytes, EC-PC-salts sytems. Similar observations have recently been obtained and systematically studied by Chandra and co-workers [25,26] in a different system of PMMA based gel electrolytes. Such observations have been found to be in full agreement with the "Breathing Chain model" proposed by Chandra et al [25,26].…”

Section: Electrochemicalsupporting

confidence: 87%

“…Similar observations have recently been obtained and systematically studied by Chandra and co-workers [25,26] in a different system of PMMA based gel electrolytes. Such observations have been found to be in full agreement with the "Breathing Chain model" proposed by Chandra et al [25,26]. The final compositions of the gel electrolytes, PVdF-HFP (20 wt.%)-EC:PC (1:1 V/V)-I.0 M LiC104/NaC104/ TEAC104 salts, were chosen for the construction of EDLCs.…”

Section: Electrochemicalsupporting

confidence: 87%

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Experimental studies on solid state electrical double layer capacitors using activated charcoal powder electrodes and PVdF-HFP based gel electrolytes

Hashmi

Kumar

Tripathi

2004

Ionics

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Abstract. Ion conducting polymeric gel electrolytes, based on poly vinylidine fluoride-cohexafluropropylene (PVdF-HFP)-ethylene carbonate (EC)-propylene carbonate (PC)-salts, LiC104, NaC104 and (C2H5)4NC104 (TEAC104), have been used in the fabrication of solid state electrical double layer capacitors (EDLCs) with activated charcoal powder electrodes. Comparative studies of different capacitor cells with different gel electrolytes have been carried out using a.c. impedance analysis, linear sweep-reversal voltammetry and galvanostatic charge-discharge techniques. The large values of overall capacitance of 50-100 mFcm z (equivalent to single electrode specific capacitance 50-77 Fg 1 of carbon) have been achieved. This corresponds to the energy density 1.6-2.7 Whkg -1. The values of the capacitance have been found to be almost stable up to 5000 voltammetric cycles. The comparative studies of different capacitor cells indicate that the charging processes and hence the coulombic efficiencies are highly affected by the size of the ions, accumulated at the interfaces of EDLCs.

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Section: Electrochemicalsupporting

confidence: 87%

Section: Electrochemicalsupporting

confidence: 87%

Experimental studies on solid state electrical double layer capacitors using activated charcoal powder electrodes and PVdF-HFP based gel electrolytes

Hashmi

Kumar

Tripathi

2004

Ionics

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“…Chain opening is analogous to "inhaling" and chain folding to "exhaling". This inhaling-exhaling process of the polymeric chain led to volume and local pressure changes that either dissociate ion pairs and increased number density of mobile ions or reduce viscosity and increased ionic mobility, both of which, will result in conductivity enhancement [8]. However, at high polymer content, viscosity effect would dominate.…”

Section: Ils In Polymer Electrolytes (Pes)mentioning

confidence: 99%

Ionic Liquid Enhancement of Polymer Electrolyte Conductivity and their Effects on the Performance of Electrochemical Devices

Yusuf¹,

Yahya²,

Arof³

2017

Progress and Developments in Ionic Liquids

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Ionic liquids (ILs) are molten salts at ambient temperature and consist of poorly coordinating cations and anions. They have good electrical conductivity with a wide voltage window and high thermal stability, but negligible vapor pressure. ILs can enhance ionic conductivity when added to polymer electrolytes. Conductivity enhancement is due to the additional ions supplied by the IL, the plasticizing nature of the IL and the low viscosity that facilitates ion mobility. The plasticizing nature of ILs softens the polymer chain giving rise to easier polymer segmental motion. Increase in polymer segmental motion implies that IL can increase amorphousness of a polymer electrolyte (PE). This article discusses the involvement of ionic liquid as electrolytes in selected devices, namely dye sensitized photovoltaics, batteries, fuel cells and supercapacitors.

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“…Despite the fact that zinc-based batteries have been used around for a long time, various zinc-based systems have been under significant and increasing R&D activities in recent years [13]. This is largely due to the driving forces from the consumer electronics market, development of hybrid and electric vehicles and special applications including military applications [13].…”

Section: Introductionmentioning

confidence: 99%

“…This is largely due to the driving forces from the consumer electronics market, development of hybrid and electric vehicles and special applications including military applications [13]. In a recent study by Karimov et al [1], the electrochemical behavior of Zn/orange dye aqueous solution/carbon cell has been investigated.…”

Section: Introductionmentioning

confidence: 99%

Fabrication and Investigation of the Charge/Discharge Characteristics of Zinc/PVA-KOH/Carbon Cell

et al. 2009

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Electrochemical properties of a zinc/polyvinyl alcohol-potassium hydroxide/carbon cell have been investigated. In this cell, PVA-KOH gel has been used as an electrolyte with PVA/KOH wt.% ratio of 60:40, while zinc and carbon rods served as electrodes. The cylindrical glass vessel of length 3.0 cm and of diameter 2.0 cm has been used as a cell compartment. The current-voltage characteristics and open circuit voltage-time, charge voltage/current-time and discharge voltage/current-time studies have been done. The open circuit voltage has been observed for 160 h. It has been found that the cell shows stability and is rechargeable, too.

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Proton-conducting gel electrolyte

Cited by 47 publications

References 14 publications

Experimental studies on solid state electrical double layer capacitors using activated charcoal powder electrodes and PVdF-HFP based gel electrolytes

Experimental studies on solid state electrical double layer capacitors using activated charcoal powder electrodes and PVdF-HFP based gel electrolytes

Ionic Liquid Enhancement of Polymer Electrolyte Conductivity and their Effects on the Performance of Electrochemical Devices

Fabrication and Investigation of the Charge/Discharge Characteristics of Zinc/PVA-KOH/Carbon Cell

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