Quasi-solid-state dye-sensitized solar cell based on gel electrolyte with high gel to solution transition temperature using low molecular mass organogelator

Wang, Lu; Huo, Zhipeng; Li, Tao; Zhu, Jun; Zhang, Changneng; Chen, Shuanghong; Dai, Songyuan

doi:10.1016/j.jphotochem.2016.05.027

Cited by 8 publications

(2 citation statements)

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“…The N,Nʹ-1,4-butylenediylbis-dodecanamide was applied to gelate the 1,2-dimethyl-3-propyl-imidazolium iodide (DMPII), and the resulting IGE had a T gel of 115.8°C. [95]. N,Nʹ-1,5-pentanediylbis-dodecanamide was employed to gelate the DMPII, resulting in an IGE with a T gel of 108°C [96], and to gelate acetonitrile-based LEs, resulting in an IGE with a T gel of 80.5°C [97] ( Fig.…”

Section: Low Molecule-mass Organic Gelator-based Gel Electrolytementioning

confidence: 99%

Safety regulation of gel electrolytes in electrochemical energy storage devices

2019

Sci. China Mater.

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Electrochemical energy storage devices, such as lithium ion batteries (LIBs), supercapacitors and fuel cells, have been vigorously developed and widely researched in past decades. However, their safety issues have appealed immense attention. Gel electrolytes (GEs), with a special state in-between liquid and solid electrolytes, are considered as the most promising candidates in electrochemical energy storage because of their high safety and stability. This review summarized the recent progresses made in the application of GEs in the safety regulation of the electrochemical energy storage devices. Special attention was paid to the gel polymer electrolytes, the organic low molecule-mass GEs, as well as the fumed silica-based and siloxane-based GEs. Finally, the current challenges and future directions were proposed in terms of the development of GEs.

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Section: Low Molecule-mass Organic Gelator-based Gel Electrolytementioning

confidence: 99%

Safety regulation of gel electrolytes in electrochemical energy storage devices

2019

Sci. China Mater.

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“…Redox group embedded polymer electrolyte can mobilize the photoanode and cathode through surface interaction. , Polymer network serves not only sources of the charge carriers but also offers low dissociation energy to the electrolyte salts to produce abundant redox couples . The electron-rich surface works as obstacle for electron hole pair recombination in electrolytes. , Functionalized polymers improve the ionic conductivity of electrolyte through coordination of electrolyte ions into chain structure. ,− This also preserves surface groups of QDs and dyes and hence enhances the conduction pathway. Polar redox groups have lower activation energy which favors the reversible reaction .…”

Section: Introduction and Backgroundsmentioning

confidence: 99%

Review on Functional Electrolyte, Redox Polymers, and Solar Conversions in 3G Emerging Photovoltaic Technologies: Progress and Outlook

Kumar,

Maiti

2023

Energy Fuels

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Abundant solar energy has transformed the present solar photovoltaics owing to its rapid conversion into electrical energy without deteriorating ecosystem. Third generation (3G) energy conversion devices reveal utilization of photosensitizer, i.e., organic dye, quantum dots, and perovskite as functional absorbing materials to transform solar energy. Functional polymers are key ingredients (fuels) for the development of suitable redox potential and high temperature or humidity resistive charge transport medium. Electrolyte accelerates the photovoltaic reversible reaction (hole conduction) through exposure of a minimum energy barrier between the photoanode and cathode. Redox-active polymer enhances electrolyte uptake efficiency, ionic conductivity, and dimensional stability of solar device. Various electrolytes exhibit different functional activities due to their different redox energy. The functionalized polymer bears appropriate HOMO–LUMO energetics and low activation energy, which could adjust different photosensitizer with better compatibility. Therefore, the redox polymer percolates a redox couple at a photoexcited sensitizer through control of undesired reactions. It plays the important role of ion and electron transport mediator via expanding suitable interfacial energetics and band structure for photovoltaic reaction. The polymeric pendant groups (chemical environments) preserve electrolyte couples through reducing wettability and thus immobilize the active density of electrolyte anions for photovoltaic reactions. Thus, the polymer improves reversibility due to interfacial compatibility, electrolyte filtration effect, and synergistic stabilization. The present review focuses on polymer-derived functional electrolytes, photosensitizer–polymer interface, thermodynamic interactions, and power conversion efficiencies of 3G photovoltaic devices. Functional polymers open an avenue for the development of stable and efficient photovoltaic reactions at low cost based dyes, quantum dots, and perovskite-sensitized solar conversion systems.

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