Strategy to assess the carbon electrode modifications associated with the high voltage ageing of electrochemical capacitors in organic electrolyte

2021 ◽  
Author(s):  
S.E.M Pourhosseini ◽  
Annika Bothe ◽  
Andrea Balducci ◽  
Francois Beguin ◽  
Paula Ratajczak
Keyword(s):  
High Voltage ◽  
Electrochemical Capacitors ◽  
Organic Electrolyte ◽  
Carbon Electrode

Effect of low water content in protic ionic liquid on ions electrosorption in porous carbon: application to electrochemical capacitors

2017 ◽  
Vol 19 (18) ◽  
pp. 11173-11186 ◽  
Author(s):  
B. Gorska ◽  
L. Timperman ◽  
M. Anouti ◽  
F. Béguin
Keyword(s):  
Ionic Liquid ◽  
Water Content ◽  
Porous Carbon ◽  
Electrochemical Capacitors ◽  
Carbon Electrode ◽  
Stern Layer ◽  
Protic Ionic Liquid ◽  
Porous Carbon Electrode

We report the effect of low water content in [(C2H5)3N+H] [TFSI−] on the Stern layer nanostructure in a porous carbon electrode at positive and negative potentials.

Influence of aqueous electrolyte concentration on parasitic reactions in high-voltage electrochemical capacitors

2016 ◽  
Vol 5 ◽  
pp. 111-115 ◽  
Author(s):  
Minglong He ◽  
Krzysztof Fic ◽  
Elżbieta Frąckowiak ◽  
Petr Novák ◽  
Erik J. Berg
Keyword(s):  
High Voltage ◽  
Electrolyte Concentration ◽  
Aqueous Electrolyte ◽  
Electrochemical Capacitors

Electrochemical Deposition Mechanism of Polyaniline at High Potential in Organic Electrolyte

2011 ◽  
Vol 284-286 ◽  
pp. 2272-2275 ◽  
Author(s):  
Feng Yi Li ◽  
Wei Wang ◽  
Ben Lin He ◽  
Ming Liang Sun ◽  
Ling Xia Song
Keyword(s):  
Electron Microscopy ◽  
Electrochemical Deposition ◽  
Electrochemical Impedance ◽  
High Potential ◽  
Organic Electrolyte ◽  
Carbon Electrode ◽  
Deposition Mechanism ◽  
Inorganic Electrolyte ◽  
And Diffusion ◽  
Scanning Electron

Polyaniline (PANI) was deposited on the glassy carbon electrode in organic electrolyte. The deposition mechanism and properties of resulted PANI were characterized with Scanning Electron Microscopy (SEM), Fourier Transform Infrared Spectroscopy (FTIR), Electrochemical Impedance Spectroscopy (EIS). The results show that: the polymerization of PANI can carry in a relatively high potential (2.4V), and the electrochemical deposition mechanism of PANI at high potential in organic electrolyte is different from that in inorganic system due to the low conductivity and diffusion coefficient of organic electrolyte. The electro-conductivity of PANI is good in the range of 0.2~0.8V which is wider than that reported in inorganic electrolyte.

Ultrathin Cu-MOF@δ-MnO2 nanosheets for aqueous electrolyte-based high-voltage electrochemical capacitors

2018 ◽  
Vol 6 (36) ◽  
pp. 17329-17336 ◽  
Author(s):  
Jing Xu ◽  
Yan Wang ◽  
Shuai Cao ◽  
Jian Zhang ◽  
Guangxun Zhang ◽  
...  
Keyword(s):  
High Voltage ◽  
Aqueous Electrolyte ◽  
Electrochemical Capacitors ◽  
Water Electrolysis ◽  
Operating Voltage ◽  
Asymmetric Supercapacitor ◽  
Mno2 Nanosheets

Ultrathin Cu-MOF@δ-MnO2 nanosheets have been successfully prepared and the operating voltage window of the asymmetric supercapacitor can reach high values in aqueous electrolyte without any water electrolysis.

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