Bis(trifluoromethanesulfonyl)imide Metallic Salts Based Electrolytes for Electrochemical Capacitor Application: Theoretical vs Experimental Performance | Zendy

Tavo Romann | Zendy; Jaanus Eskusson | Zendy; Thomas Thomberg | Zendy; Enn Lust | Zendy; Alar Jänes | Zendy

Open Access

Bis(trifluoromethanesulfonyl)imide Metallic Salts Based Electrolytes for Electrochemical Capacitor Application: Theoretical vs Experimental Performance

Author(s) -

Tavo Romann,

Jaanus Eskusson,

Thomas Thomberg,

Enn Lust,

Alar Jänes

Publication year - 2021

Publication title -

journal of the electrochemical society

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.258

H-Index - 271

eISSN - 1945-7111

pISSN - 0013-4651

DOI - 10.1149/1945-7111/ac11a2

Subject(s) - electrolyte , cyclic voltammetry , electrochemistry , dielectric spectroscopy , imide , acetonitrile , materials science , raman spectroscopy , capacitor , analytical chemistry (journal) , inorganic chemistry , power density , chemistry , electrode , power (physics) , electrical engineering , organic chemistry , polymer chemistry , thermodynamics , voltage , physics , optics , engineering

In this work we have studied the effect of 1 M bis(trifluoromethanesulfonyl)imide metallic salts in acetonitrile (1 M MeTFSI, where Me = Li, Na, K, Cs or Mg) as an electrolyte for electrochemical capacitors (ECs), using computational quantum mechanical modelling, Raman analysis, cyclic voltammetry, electrochemical impedance spectroscopy and constant power methods. Also, the ionic conductivities of 1 M MeTFSI in AN have been measured and discussed. The ECs based on the 1 M KTFSI in AN electrolyte deliver the higher power density and energy density compared to other MeTFSI based electrolytes and showing excellent characteristics applicable in high energy and power EC devices.

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