4.6 Article

Selenocyanate-based ionic liquid as redox-active electrolyte for hybrid electrochemical capacitors

Journal

ELECTROCHIMICA ACTA
Volume 314, Issue -, Pages 1-8

Publisher

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2019.04.161

Keywords

Carbon/carbon capacitor; Ionic liquid; Redox electrolyte; Hybrid capacitor; Battery-type electrode

Funding

  1. National Center for Research and Development [LIDER/018/513/L-4/12]
  2. National Science Centre [UMO 2014/15/B/ST4/04957]
  3. Ministry of Science and Higher Education [03/31/DSPB/0353]

Ask authors/readers for more resources

This paper describes a hybrid capacitor based on identical activated carbon (AC) electrodes and the 1-ethyl-3-methylimidazolium selenocyanate, [EMIm][SeCN], liquid salt as redox-active electrolyte. [EMIm][SeCN] is a fluorine-free ionic liquid (IL) which combines good charge and mass transport properties (sigma = 25 mS cm(-1) and eta = 17 mPa s(-1)), as well as redox activity originating from the pseudohalide anion. Owing to the impact of the SeCN-/(SeCN)(2) redox couple, the AC/AC capacitor based on this electrolyte displays remarkable discharge (from 1.5 V) capacitance of 49 and 56 F g(-1) (expressed per total active mass of electrodes) using aluminum and stainless steel (SSt) current collectors, respectively. Although higher capacitance values were displayed for the hybrid capacitor with SSt components, more advantageous E-0 localization for cell hybridization was observed when using Al current collectors. (C) 2019 Elsevier Ltd. All rights reserved.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.6
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available