Tailoring Ionogel transport properties through precise control of sol-gel reaction time

IF 5.6 3区材料科学 Q1 ELECTROCHEMISTRY Electrochimica Acta Pub Date : 2025-04-01 Epub Date: 2025-02-02 DOI:10.1016/j.electacta.2025.145790

Hugo Chotard , Marco Olarte , Pierre-Louis Taberna , Patrice Simon

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Abstract

Confining ionic liquids (ILs) within porous materials offers various opportunities in terms of applications (energy storage, filtration etc), yet precise control of the interaction between the ionic liquid and the matrix remains challenging. Here, we investigate the influence of precursor reaction time during the synthesis of an ionogel coating formed through hybrid sol-gel chemistry, for further use as an electrochemical interface for energy storage applications. Our study reveals significant dependencies of ionic transport properties evaluated by electrochemical impedance spectroscopy on reaction time. By using kinetic monitoring by NMR and SAXS of the precursor during their transformation, we show that the emergence of size controlled nanodomains within the sol can be linked to an enhancement of the interface transport properties. These findings provide valuable insights into the design and optimization of ionogel-based systems for advanced applications in energy storage and membrane technology.

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通过精确控制溶胶-凝胶反应时间来剪裁离子凝胶的传输特性

将离子液体（ILs）限制在多孔材料中为应用（储能，过滤等）提供了各种机会，但离子液体与基质之间相互作用的精确控制仍然具有挑战性。在这里，我们研究了前驱体反应时间对通过混合溶胶-凝胶化学合成离子凝胶涂层的影响，以进一步用作储能应用的电化学界面。我们的研究揭示了电化学阻抗谱评价的离子输运性质与反应时间的显著相关性。通过核磁共振和SAXS对前驱体转变过程的动力学监测，我们发现溶胶中尺寸可控纳米结构域的出现与界面输运性质的增强有关。这些发现为离子凝胶系统的设计和优化提供了有价值的见解，可用于储能和膜技术的先进应用。

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来源期刊

Electrochimica Acta 工程技术-电化学

CiteScore

11.30

自引率

6.10%

发文量

1634

审稿时长

41 days

期刊介绍： Electrochimica Acta is an international journal. It is intended for the publication of both original work and reviews in the field of electrochemistry. Electrochemistry should be interpreted to mean any of the research fields covered by the Divisions of the International Society of Electrochemistry listed below, as well as emerging scientific domains covered by ISE New Topics Committee.