Journal
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
Volume 6, Issue 2, Pages 2240-2249Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acssuschemeng.7b03684
Keywords
Deep eutectic solvents; Electrochromic materials; Electrolytes; Coloration efficiency; Electrochemical redox probes
Categories
Funding
- European Regional Development Fund (ERDF), through COMPETE - Operational Programme for Competitiveness and Internationalisation (OPCI) [POCI-01-0145-FEDER- 016387]
- FCT - Fundacao para a Ciencia e a Tecnologia [PTDC/QEQ-QFI/1971/2014]
- FCT/MCTES [SFRH/BPD/102705/2014, IF/0041/2013/CP1161/CT00, RECI/BBB-BQB/0230/2012]
- Fundação para a Ciência e a Tecnologia [PTDC/QEQ-QFI/1971/2014] Funding Source: FCT
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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 cm(2).C-1 at 520 nm) and was stable for at least 1250 redox cycles.
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