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Characterization of Different Conductive Salts in ACN‐Based Electrolytes for Electrochemical Double‐Layer Capacitors
Author(s) -
Krummacher Jakob,
Schütter Christoph,
Passerini Stefano,
Balducci Andrea
Publication year - 2017
Publication title -
chemelectrochem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.182
H-Index - 59
ISSN - 2196-0216
DOI - 10.1002/celc.201600534
Subject(s) - electrolyte , ionic liquid , electrochemistry , tetrafluoroborate , imide , acetonitrile , tetraethylammonium , inorganic chemistry , electrochemical window , materials science , conductivity , chemistry , chemical engineering , ionic conductivity , organic chemistry , polymer chemistry , electrode , potassium , engineering , catalysis
Herein we report a systematic investigation of the chemical and physical properties of acetonitrile‐based electrolytes that contained the salts tetraethylammonium tetrafluroroborate (Et 4 NBF 4 ), tetraethylammonium bis(trifluoromethanesulfonyl)‐ imide (Et 4 NTFSI), 1‐butyl‐1‐methylpyrrolidinium tetrafluoroborate (Pyr 14 BF 4 ), or 1‐butyl‐1‐methylpyrrolidinium bis(trifluoromethanesulfonyl)imide (Pyr 14 TFSI). The ionic conductivity, viscosity, density, and electrochemical stability windows of these electrolytic solutions have been considered in detail. From these results, the electrolyte Et 4 NTFSI (1 mol dm −3 ) in ACN appeared to display a promising set of properties that allow the realization of ACN‐based electrochemical double‐layer capacitors able to display stable behavior at 3.1 V.