Deep Eutectic Solvents as Suitable Electrolytes for Electrochromic Devices

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The development of chloride free Deep Eutectic Solvents (DES) based on lithium acetate, triflate, bistriflimide, and sodium triflate combined with glycerol, ethylene glycol, and polyethylene glycol (PEG400) as suitable electrolytes was successfully applied in electrochromic devices (ECD). Reversible ECD incorporating selected DES as electrolyte and bipyridinium as electrochromic probes displayed a comparable performance to conventional systems, with slower transition times (2.5 times), improving the coloration contrast and efficiency (147.1 cm2. C-1 at 520 nm) and was stable for at least 1250 redox cycles.

Original languageEnglish
Pages (from-to)2240-2249
Number of pages10
JournalACS Sustainable Chemistry & Engineering
Issue number2
Publication statusPublished - 5 Feb 2018


  • Coloration efficiency
  • Deep eutectic solvents
  • Electrochemical redox probes
  • Electrochromic materials
  • Electrolytes


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