Two-Step Polarization Reversal Process in Pentacene/Poly(vinylidene fluoride–trifluoroethylene) Double-Layer Capacitor: Reduced Coercive Field

2012 ◽  
Vol 51 (2S) ◽  
pp. 02BK07 ◽  
Author(s):  
Jun Li ◽  
Dai Taguchi ◽  
Takaaki Manaka ◽  
Mitsumasa Iwamoto
Keyword(s):  
Double Layer ◽  
Coercive Field ◽  
Vinylidene Fluoride ◽  
Polarization Reversal ◽  
Reversal Process ◽  
Double Layer Capacitor ◽  
Poly Vinylidene Fluoride

Scan Rates and the Disparities in the Electrochemical Double Layer Capacitor (EDLC) Performance

2020 ◽  
Vol 307 ◽  
pp. 125-130
Author(s):  
Lawal Sa'adu ◽  
Mohd Azman Hashim@Ismail
Keyword(s):  
Carbon Nanotubes ◽  
Cyclic Voltammetry ◽  
Double Layer ◽  
Vinylidene Fluoride ◽  
High Specific Capacitance ◽  
Double Layer Capacitor ◽  
Electrochemical Double Layer Capacitor ◽  
Commercial Carbon ◽  
Poly Vinylidene Fluoride ◽  
Electrochemical Double Layer

Three electrochemical double layer capacitor (EDLC) cells (Cell X, Y and Z) made from an electrode of 90 wt. % of the multiwalled commercial carbon nanotubes, 10 wt. % of poly (vinylidene fluoride-co-hexafluoropropylene) and three different samples of electrolytes polymer electrolyte made up of a compositions of 50:50, 60:40 and 70:30 wt.% of H3PO4/PVA (in ratio) soaked in a filter paper was characterized in this study. The aim is to ascertain the disparities in performances of the cells in relation to their respective scan rates. Cyclic voltammetry (CV) measurement of cells shows a high specific capacitance of 313 Fg−1 for the scan rates 10 mV was recorded from the cell with the highest composition H3PO4/PVA ratio (i.e. 70:30 wt.%). However, when the CV of the cell was measured with different scan rates, disparities in the performance occurred, as only 94 and 174 Fg−1 was recorded at the scan rates 100 and 50 mV respectively for cell-X. The result was not different when the two other cells (60:40 and 70:30 wt. % of H3PO4/PVA) were measured at the same scan rates.

Analyzing a two-step polarization process in a pentacene/poly(vinylidene fluoride - trifluoroethylene) double-layer device using Maxwell-Wagner model

2012 ◽  
Vol 111 (2) ◽  
pp. 023706 ◽  
Author(s):  
Jun Li ◽  
Martin Weis ◽  
Dai Taguchi ◽  
Takaaki Manaka ◽  
Mitsumasa Iwamoto
Keyword(s):  
Double Layer ◽  
Vinylidene Fluoride ◽  
Polarization Process ◽  
Wagner Model ◽  
Poly Vinylidene Fluoride

Effect of crystal structure on polarization reversal and energy storage of ferroelectric poly(vinylidene fluoride-co-chlorotrifluoroethylene) thin films

Polymer ◽  
2012 ◽  
Vol 53 (6) ◽  
pp. 1277-1281 ◽  
Author(s):  
Ruixuan Han ◽  
Jiezhu Jin ◽  
Paisan Khanchaitit ◽  
Jingkang Wang ◽  
Qing Wang
Keyword(s):  
Crystal Structure ◽  
Thin Films ◽  
Energy Storage ◽  
Vinylidene Fluoride ◽  
Polarization Reversal ◽  
Poly Vinylidene Fluoride
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