The effect of the ionic size of small quaternary ammonium BF4 salts on electrochemical double layer capacitors

2014 ◽  
Vol 16 (29) ◽  
pp. 15146 ◽  
Author(s):  
Ah Reum Koh ◽  
Byunghyun Hwang ◽  
Kwang Chul Roh ◽  
Ketack Kim
Keyword(s):  
Double Layer ◽  
Quaternary Ammonium ◽  
Electrochemical Double Layer Capacitors ◽  
Ionic Size ◽  
Electrochemical Double Layer ◽  
Double Layer Capacitors

scholarly journals The smallest quaternary ammonium salts with ether groups for high-performance electrochemical double layer capacitors

2016 ◽  
Vol 7 (3) ◽  
pp. 1791-1796 ◽  
Author(s):  
Taihee Han ◽  
Min-Sik Park ◽  
Jeonghun Kim ◽  
Jung Ho Kim ◽  
Ketack Kim
Keyword(s):  
Double Layer ◽  
Quaternary Ammonium ◽  
High Performance ◽  
Quaternary Ammonium Salts ◽  
Ammonium Salts ◽  
Electrochemical Double Layer Capacitors ◽  
Electrochemical Double Layer ◽  
Double Layer Capacitors

The smallest quaternary ammonium salts (QASs) with ether groups on tails and tetrafluoroborate (BF4) as an anion exhibit high performance in electrochemical double layer capacitors (EDLCs).

Some Aspects of Preparations and Applications of Electrochemical Double‐Layer Capacitors (Supercapacitors)

2021 ◽  
pp. 53-77
Author(s):  
Aleksandr E. Kolosov ◽  
Volodymyr Y. Izotov ◽  
Elena P. Kolosova ◽  
Volodymyr V. Vanin ◽  
Anish Khan
Keyword(s):  
Double Layer ◽  
Electrochemical Double Layer Capacitors ◽  
Electrochemical Double Layer ◽  
Double Layer Capacitors

scholarly journals High Performance Graphene-Based Electrochemical Double Layer Capacitors Using 1-Butyl-1-methylpyrrolidinium tris (pentafluoroethyl) trifluorophosphate Ionic Liquid as an Electrolyte

Electronics ◽  
2018 ◽  
Vol 7 (10) ◽  
pp. 229 ◽  
Author(s):  
Jacob D. Huffstutler ◽  
Milinda Wasala ◽  
Julianna Richie ◽  
John Barron ◽  
Andrew Winchester ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Energy Density ◽  
Double Layer ◽  
Specific Energy ◽  
High Energy ◽  
High Energy Density ◽  
Electrochemical Double Layer Capacitors ◽  
Electrochemical Double Layer ◽  
High Specific Energy ◽  
Double Layer Capacitors

There are several advantages to developing electrochemical double-layer capacitors (EDLC) or supercapacitors with high specific energy densities, for example, these can be used in applications related to quality power generation, voltage stabilization, and frequency regulation. In this regard, ionic liquids capable of providing a higher voltage window of operations compared to an aqueous and/or polymer electrolyte can significantly enhance the specific energy densities of EDLCs. Here we demonstrate that EDLCs fabricated using ionic liquid 1-butyl-1-methylpyrrolidinium tris (pentafluoroethyl) trifluorophosphate (BMP-FAP) as an electrolyte and few layer liquid-phase exfoliated graphene as electrodes show remarkable performance compared to EDLC devices fabricated with aqueous potassium hydroxide (6M) as well as widely used ionic liquid 1-butyl-3-methylimidazolium hexafluorophosphate (BMIM-PF6). We found that graphene EDLC’s with BMP-FAP as an electrolyte possess a high specific energy density of ≈25 Wh/kg along with specific capacitance values as high as 200 F/g and having an operating voltage windows of >5 volts with a rapid charge transfer response. These findings strongly indicate the suitability of BMP-FAP as a good choice of electrolyte for high energy density EDLC devices.

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