Remarkable 8.3% efficiency and extended electron lifetime towards highly stable semi-transparent iodine-free DSSCs by mitigating the in-situ triiodide generation

Bharwal, Anil Kumar; Manceriu, Laura; Olivier, Céline; Mahmoud, Abdelfattah; Iojoiu, Cristina; Toupance, Thierry; Ruiz, Carmen M.; Pasquinelli, M.; Duché, David; Simon, Jean‐Jacques; Henrist, Catherine; Alloin, Fannie

doi:10.1016/j.cej.2022.136777

Cited by 21 publications

(22 citation statements)

References 98 publications

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“…Singh et al have demonstrated that doping solid electrolytes with ionic liquids can increase the amorphous region on their surface, leading to enhanced ionic conductivity. Building on earlier research, , Bharwal et al have also developed a flexible solid-state electrolyte without I 2 additives. While ILs can be used as charge transfer mediator.…”

Section: Electrochemical Energy Conversionmentioning

confidence: 99%

“…Compared to liquid electrolytes, quasi-solid-state electrolytes exhibit lower ionic conductivity. However, researchers have been working on addressing this issue through modifications to solid polymers or improvements to liquid electrolytes in recent years. ,− For instance, Tsujii et al developed a quasi-solid electrolyte comprising concentrated-polymer-brush-modified silica nanoparticles (PSiP), which formed a self-assembled and face-centered-cubic structure in the presence of I – /I 3 – . This ordered structure facilitated the filling of ionic liquid electrolytes into the spaces between the PSiPs, resulting in a continuous ion-conducting channel and improved ionic conductivity.…”

Section: Electrochemical Energy Conversionmentioning

confidence: 99%

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Energy Applications of Ionic Liquids: Recent Developments and Future Prospects

Zhou,

Gui,

Sun

et al. 2023

Chem. Rev.

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Ionic liquids (ILs) consisting entirely of ions exhibit many fascinating and tunable properties, making them promising functional materials for a large number of energy-related applications. For example, ILs have been employed as electrolytes for electrochemical energy storage and conversion, as heat transfer fluids and phase-change materials for thermal energy transfer and storage, as solvents and/or catalysts for CO2 capture, CO2 conversion, biomass treatment and biofuel extraction, and as high-energy propellants for aerospace applications. This paper provides an extensive overview on the various energy applications of ILs and offers some thinking and viewpoints on the current challenges and emerging opportunities in each area. The basic fundamentals (structures and properties) of ILs are first introduced. Then, motivations and successful applications of ILs in the energy field are concisely outlined. Later, a detailed review of recent representative works in each area is provided. For each application, the role of ILs and their associated benefits are elaborated. Research trends and insights into the selection of ILs to achieve improved performance are analyzed as well. Challenges and future opportunities are pointed out before the paper is concluded.

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Section: Electrochemical Energy Conversionmentioning

confidence: 99%

Section: Electrochemical Energy Conversionmentioning

confidence: 99%

Energy Applications of Ionic Liquids: Recent Developments and Future Prospects

Zhou,

Gui,

Sun

et al. 2023

Chem. Rev.

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“…[ 194 ] In DSSCs, when the gel electrolyte replaces the liquid electrolyte, it can overcome the inherent problems of the liquid and make it show good short‐term stability. [ 195 ] Zhao et al prepared a highly integrated flexible optical charging system by combining stable and ultra‐high speed quasi‐solid‐state Zn‐MnO 2 micro batteries (ZMB) with flexible perovskite solar cells (FPSCs) based on a simple inkjet printing and electrodeposition method (Figure 12c). The optimized ZMB has 148 mWh cm −3 (16.3uWh cm −2 ) at a current density of 400 C (5 mA cm −2 ).…”

Section: Functional Modification Of Separator and Electrolytementioning

confidence: 99%

Photoelectrochemical Engineering for Light‐Assisted Rechargeable Metal Batteries: Mechanism, Development, and Future

Bao,

Wang,

Liu

et al. 2023

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Rechargeable battery devices with high energy density are highly demanded by our modern society. The use of metal anodes is extremely attractive for future rechargeable battery devices. However, the notorious metal dendritic and instability of solid electrolyte interface issues pose a series of challenges for metal anodes. Recently, considering the indigestible dynamical behavior of metal anodes, photoelectrochemical engineering of light‐assisted metal anodes have been rapidly developed since they efficiently utilize the integration and synergy of oriented crystal engineering and photocatalysis engineering, which provided a potential way to unlock the interface electrochemical mechanism and deposition reaction kinetics of metal anodes. This review starts with the fundamentals of photoelectrochemical engineering and follows with the state‐of‐art advance of photoelectrochemical engineering for light‐assisted rechargeable metal batteries where photoelectrode materials, working principles, types, and practical applications are explained. The last section summarizes the major challenges and some invigorating perspectives for future research on light‐assisted rechargeable metal batteries.

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“…So far traditional, in part toxic solvents including nitrile-based ones (acetonitrile, valeronitrile, etc. ), propylene carbonate, dimethyl formamide, and dimethyl sulfoxide have been varied with the aim of increasing DSSC performance. − Owing to environmental issues and high volatility of these solvents, the search for more ecologically benign (green) solvents has received increasing interest, and quasi-solid electrolytes based on ionic liquids (gel-type) with good photovoltaic performance and long-term stability have been developed. − Very recently, polysiloxane-based poly(ionic liquid)s have been used as quasi-solid electrolytes without iodine and showed an excellent efficiency of 8.3% and retained about 84% of efficiency after 26 months . The so-called deep eutectic solvents (DESs) that are characterized by strong hydrogen bond (H bond) formation and generally comprise a H bond acceptor and a H bond donor have also been proposed as sustainable media to replace traditional solvents − including their use in electrolytes for DSSCs. ,,− Studies on electrolytes containing DESs have become increasingly important because of their physical and chemical features such as high ionic conductivity, a broad electrochemical window, and high thermal stability on one side but also low toxicity, low vapor pressure, nonflammability, good biocompatibility, and low production cost on the other side. − …”

Section: Introductionmentioning

confidence: 99%

“…9−13 Very recently, polysiloxane-based poly-(ionic liquid)s have been used as quasi-solid electrolytes without iodine and showed an excellent efficiency of 8.3% and retained about 84% of efficiency after 26 months. 13 The socalled deep eutectic solvents (DESs) that are characterized by strong hydrogen bond (H bond) formation and generally comprise a H bond acceptor and a H bond donor have also been proposed as sustainable media to replace traditional solvents 14−19 including their use in electrolytes for DSSCs. 1,14,20−29 Studies on electrolytes containing DESs have become increasingly important because of their physical and chemical features such as high ionic conductivity, a broad electrochemical window, and high thermal stability on one side but also low toxicity, low vapor pressure, nonflammability, good biocompatibility, and low production cost on the other side.…”

Section: Introductionmentioning

confidence: 99%

Highly Efficient Dye-Sensitized Solar Cells Based on Electrolyte Solutions Containing Choline Chloride/Ethylene Glycol Deep Eutectic Solvent: Electrolyte Optimization

Dokoohaki

Zolghadr

Klein

2022

Ind. Eng. Chem. Res.

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Combined experimental and computational analyses were carried out with the aim of developing a cost-effective and sustainable electrolyte solution based on a deep eutectic solvent (DES) for dyesensitized solar cells (DSSCs). A mixture of choline chloride (CholCl, 1 mol) and ethylene glycol (EG, 2 mol) as a DES was used in combination with MeCN, lithium iodide, 1-ethyl-3-methylimidazolium iodide (Emim), and iodine as DSSC electrolytes on TiO 2 and Pt electrodes. It is noteworthy that in this work the effects of various conditions, namely, the amount of MeCN and the molar concentration of I 2 , LiI, and EmimI and the 4-tert-butylpyridine (TBP) additive on the photovoltaic performance of DSSCs were evaluated. Optimization of the DSSC performance using photocurrent density−voltage plots allowed reaching an efficiency of 9.26% with an electrolyte solution comprising LiI (1.1 M), EmimI (0.5 M), and I 2 (0.04 M), and 60:40 v/v of CholCl/EG DES and MeCN. Addition of TBP to the electrolyte allowed reaching even 9.48%, both are unprecedentedly high values. Density functional theory geometry optimizations and molecular dynamics simulation calculations generated an insightful set of information about the intensity of the interactions between electrolyte components with each other in solution and with the TiO 2 or Pt solid surfaces. From mean square displacement curves, diffusion coefficients (×10 −11 m 2 /s) were found to increase along the series Li + (0.82) < Emim + (1.01) < Chol + (1.15) < Cl − (1.29) < I − (1.74) < EG (5.99) < MeCN (102.92) in line with the experimental data. Li + solvation vs Li + adsorption on the TiO 2 or Pt surface is the main interaction governing the efficiency with a high rate of localization, improving the performance. Our results provide a deep understanding of the molecular interactions at the interfaces of the DES and might pave the way for the fabrication and design of optimized DES-based electrolytes for photovoltaic processes.

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Remarkable 8.3% efficiency and extended electron lifetime towards highly stable semi-transparent iodine-free DSSCs by mitigating the in-situ triiodide generation

Cited by 21 publications

References 98 publications

Energy Applications of Ionic Liquids: Recent Developments and Future Prospects

Energy Applications of Ionic Liquids: Recent Developments and Future Prospects

Photoelectrochemical Engineering for Light‐Assisted Rechargeable Metal Batteries: Mechanism, Development, and Future

Highly Efficient Dye-Sensitized Solar Cells Based on Electrolyte Solutions Containing Choline Chloride/Ethylene Glycol Deep Eutectic Solvent: Electrolyte Optimization

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