Deep Eutectic Solvents as Suitable Electrolytes for Electrochromic Devices

Cruz, Hugo; Jordão, Noémi; Amorim, Patrícia M; Dionı́sio, Madalena; Branco, Luı́s C.

doi:10.1021/acssuschemeng.7b03684

Cited by 70 publications

(50 citation statements)

References 63 publications

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“…They can be synthesized by simple mixing of the low‐cost and environmental friendly starting materials just heat up most of the times and without further purifications. Recently, we reported DES as low cost and green electrolytes for electrochromic devices . To the best of our knowledge, this is the first example of POM‐ILs combined with DES as electrolytes.…”

Section: Introductionmentioning

confidence: 82%

Polyoxometalates‐Based Ionic Liquids (POMs‐ILs) for Electrochemical Applications

et al. 2020

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Four Polyoxometalates based Ionic Liquids (POMs-ILs) have been developed and applied in electrochemical studies. In a conventional 3-electrode configuration cell the POM-ILs possess three quasi reversible electron transfers (ET) when compared to the commercially available POM under the same experimental conditions. It is also important to note that they presented bleaching and coloration processes faster than the commercially ones. In this configuration cell, the bleaching times are much higher than the coloration times. In this approach, POMs and POM-ILs as electrochromic materials and Deep Eutectic Solvents (DES) as electrolytes were tested in order to prepare efficient electrochromic devices (ECDs). The coloration of the ECD can be tuned by changing the counter cation of the POM-ILs as well as the amount of selected POM corresponding to the metals.

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Section: Introductionmentioning

confidence: 82%

Polyoxometalates‐Based Ionic Liquids (POMs‐ILs) for Electrochemical Applications

et al. 2020

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“…A wide array of alcohols have been used so far as HBDs for DESs, 5 but to the best of our knowledge their mixtures with lithium salts have not been applied as electrolytes for batteries yet. A few reports investigate their application for electrochemical double layer capacitors, 146 or electrochromic devices, 7,152,153 giving some insights into their characterization for electrochemical applications. Cruz et al showed for instance that for the same lithium salt (LiCl or lithium iodide LiI) DESs containing G showed lower conductivity values than the EG analogues.…”

Section: Lithium Salts and Alcoholsmentioning

confidence: 99%

Deep eutectics and analogues as electrolytes in batteries

Pietro

Mele

2021

Journal of Molecular Liquids

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Deep eutectic Solvents (DESs) are an emerging class of materials showing a marked depression in melting points compared to those of the neat constituents and characterized by a number of beneficial properties. DES research currently prospers and out of the multiple current applications, the electrochemistry field is likely the most flourishing. This detailed review emphasizes recent research efforts in order to apply type III and type IV DESs and their analogues as electrolytes for rechargeable cationic batteries. The recent developments in the last decade are outlined, framing outstanding achievements and open questions, and identifying future optimisation directions to overcome the existing challenges.

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“…Our group reported electrochromic materials and respective devices based on transition metal oxides, Prussian blue systems,, conducting polymers, and viologen derivatives,, among others. Recently, we already reported the application of DES as green electrolytes for electrochromism ,…”

Section: Figurementioning

confidence: 99%

Intrinsically Electrochromic Deep Eutectic Solvents

et al. 2019

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Multi-colored intrinsically electrochromic based Deep Eutectic Solvents (IEDES) have been firstly developed. IEDES composed by the suitable mixing between viologen salt derivatives as HBA and ethylene glycol (EG), glycerol (Gly) and poly(ethylene glycol) (PEG) as HBD have been prepared and characterized by thermal and electrochemical studies. A detailed electrochemical characterization of the IEDES using cyclic voltammetry studies in 2-electrodes (ECDs) configuration cells were performed. The most promissory IEDES based on viologen salt derivatives can act simultaneously as electrolyte and electrochromic. Preliminary redox cycling studies showed a reversible and stable ECD composed by [(C 5 O 2 ) 2 bpy]I 2 :EG at least until 1300 minutes. The coloration efficiency and reversibility can be tuned changing only the alcohol counterpart and/or the side chains and anion of the viologen derivatives. These IEDES can be explored as functional and efficient multi-colored ECDs. Also, these innovative materials can open attractive applications for material science and energy devices.

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Deep Eutectic Solvents as Suitable Electrolytes for Electrochromic Devices

Cited by 70 publications

References 63 publications

Polyoxometalates‐Based Ionic Liquids (POMs‐ILs) for Electrochemical Applications

Polyoxometalates‐Based Ionic Liquids (POMs‐ILs) for Electrochemical Applications

Deep eutectics and analogues as electrolytes in batteries

Intrinsically Electrochromic Deep Eutectic Solvents

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