Polysaccharide-Based Gel Electrolytes Containing Hydrophobic Ionic Liquids for Electric Double-Layer Capacitors

2019 ◽  
Vol 41 (22) ◽  
pp. 25-34 ◽  
Author(s):  
Masaki Yamagata ◽  
Kazunari Soeda ◽  
Shota Ikebe ◽  
Shigeaki Yamazaki ◽  
Masashi Ishikawa
Keyword(s):  
Ionic Liquids ◽  
Double Layer ◽  
Electric Double Layer ◽  
Gel Electrolytes ◽  
Hydrophobic Ionic Liquids ◽  
Double Layer Capacitors ◽  
Electric Double Layer Capacitors

An ether bridge between cations to extend the applicability of ionic liquids in electric double layer capacitors

2016 ◽  
Vol 4 (48) ◽  
pp. 19160-19169 ◽  
Author(s):  
Hsin-Chieh Huang ◽  
Yung-Che Yen ◽  
Jui-Cheng Chang ◽  
Ching-Wen Su ◽  
Pei-Yi Chang ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Double Layer ◽  
Low Temperatures ◽  
Electric Double Layer ◽  
Ether Bridge ◽  
Double Layer Capacitors ◽  
Electric Double Layer Capacitors

Linking 5% cations with an ether bridge prevents EMIm-TFSI crystallization at low temperatures and promotes the performance of the resultant EDLC.

Charge driven lateral structural evolution of ions in electric double layer capacitors strongly correlates with differential capacitance

2018 ◽  
Vol 20 (12) ◽  
pp. 8054-8063 ◽  
Author(s):  
Jia Le Ma ◽  
Qiangqiang Meng ◽  
Jun Fan
Keyword(s):  
Ionic Liquids ◽  
Double Layer ◽  
Electric Double Layer ◽  
Structural Evolution ◽  
Differential Capacitance ◽  
Lateral Ordering ◽  
Double Layer Capacitors ◽  
Electric Double Layer Capacitors

The correlation between differential capacitance and lateral ordering evolution of ionic liquids at charged electrodes has been investigated in this work.

Electric double layer capacitors with new gel electrolytes

1995 ◽  
Vol 40 (13-14) ◽  
pp. 2217-2222 ◽  
Author(s):  
Masashi Ishikawa ◽  
Mitsuo Ihara ◽  
Masayuki Morita ◽  
Yoshiharu Matsuda
Keyword(s):  
Double Layer ◽  
Electric Double Layer ◽  
Gel Electrolytes ◽  
Double Layer Capacitors ◽  
Electric Double Layer Capacitors

scholarly journals Macroscopic fibres of CNTs as electrodes for multifunctional electric double layer capacitors: from quantum capacitance to device performance

Nanoscale ◽  
2016 ◽  
Vol 8 (6) ◽  
pp. 3620-3628 ◽  
Author(s):  
E. Senokos ◽  
V. Reguero ◽  
J. Palma ◽  
J. J. Vilatela ◽  
Rebeca Marcilla
Keyword(s):  
Ionic Liquids ◽  
Double Layer ◽  
High Power ◽  
Electric Double Layer ◽  
Quantum Capacitance ◽  
Device Performance ◽  
Power And Energy ◽  
Double Layer Capacitors ◽  
Electric Double Layer Capacitors

Large planar EDLC of strong CNT fibres and ionic liquids with high power and energy densities, exhibiting CNT quantum capacitance.

Electric double layer capacitors of high volumetric energy based on ionic liquids and hierarchical-pore carbon

2014 ◽  
Vol 2 (36) ◽  
pp. 14963-14972 ◽  
Author(s):  
Hsin-Chieh Huang ◽  
Cheng-Wei Huang ◽  
Chien-Te Hsieh ◽  
Hsisheng Teng
Keyword(s):  
Ionic Liquids ◽  
Double Layer ◽  
High Voltage ◽  
Electric Double Layer ◽  
Electrochemical Capacitors ◽  
Mesophase Pitch ◽  
Hierarchical Pores ◽  
Hierarchical Pore ◽  
Double Layer Capacitors ◽  
Electric Double Layer Capacitors

Incorporating high-voltage ionic liquids with activated mesophase pitch containing hierarchical pores can assemble electrochemical capacitors of ultrahigh stack volumetric energy.

Performance of Electric Double Layer Capacitors with Polymer Gel Electrolytes

1999 ◽  
Vol 575 ◽  
Author(s):  
Masashi Ishikawa ◽  
Takahiro Kishino ◽  
Naoji Katada ◽  
Masayuki Morita
Keyword(s):  
Double Layer ◽  
Electric Double Layer ◽  
Vinylidene Fluoride ◽  
Organic Electrolyte ◽  
Polymer Gel ◽  
Gel Electrolytes ◽  
Polymer Gel Electrolytes ◽  
Poly Vinylidene Fluoride ◽  
Double Layer Capacitors ◽  
Electric Double Layer Capacitors

ABSTRACTPolymer gel electrolytes consisting of poly(vinylidene fluoride) (PVdF), tetraethylammoniumtetrafluoroborate (TEABF4), and propylene carbonate (PC) as a plasticizer have been investigatedfor electric double layer capacitors. The PVdF gel electrolytes showed high ionic conductivity (ca.6 mS cm-1at 298 K). To assemble model capacitors with the PVdF gel electrolytes and activatedcarbon fiber cloth electrodes, a pair of the fixed electrodes was soaked in a precursor solutioncontaining PC, PVdF, and TEABF4, followed by evaporation of the PC solvent in a vacuumoven. The resulting gel electrolytes were in good contact with the electrodes. The modelcapacitors with the PVdF gel electrolytes showed a large value of capacitance and high coulombicefficiency in operation voltage ranges of 1–2 and 1–3 V. It is worth noting that the capacitors withthe PVdF electrolytes showed long voltage retention in a self-discharge test. These goodcharacteristics of our gel capacitors were comparable to those of typical double layer capacitorswith a liquid organic electrolyte containing PC and TEABF4; rather, the voltage retentivity of thePVdF gel capacitors was much superior to that of the capacitors with the organic electrolyte.

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