Romero Mariano, Mombrú Dominique, Pignanelli Fernando, Faccio Ricardo, Mombrú Alvaro W
Centro NanoMat & Área Física, Departamento de Experimentación y Teoría de la Estructura de la Materia y sus Aplicaciones - DETEMA, Facultad de Química, Universidad de la República, Montevideo, Uruguay.
Front Chem. 2020 Jul 14;8:537. doi: 10.3389/fchem.2020.00537. eCollection 2020.
In this mini-review, a comprehensive discussion on the state of the art of hybrid organic-inorganic mixed ionic-electronic conductors (-MIECs) is given, focusing on conducting polymer nanocomposites comprising inorganic nanoparticles ranging from ceramic-in-polymer to polymer-in-ceramic concentration regimes. First, a brief discussion on fundamental aspects of mixed ionic-electronic transport phenomena considering the charge carrier transport at bulk regions together with the effect of the organic-inorganic interphase of hybrid nanocomposites is presented. We also make a recount of updated instrumentation techniques to characterize structure, microstructure, chemical composition, and mixed ionic-electronic transport with special focus on those relevant for -MIECs. Raman imaging and impedance spectroscopy instrumentation techniques are particularly discussed as relatively simple and versatile tools to study the charge carrier localization and transport at different regions of -MIECs including both bulk and interphase regions to shed some light on the mixed ionic-electronic transport mechanism. In addition, we will also refer to different device assembly configurations and measurements experiments to analyze mixed ionic-electronic conduction phenomena for different specific applications. Finally, we will also review the broad range of promising applications of -MIECs, mainly in the field of energy storage and conversion, but also in the emerging field of electronics and bioelectronics.
在本综述中，我们对有机-无机混合离子-电子导体（-MIECs）的最新进展进行了全面讨论，重点关注包含从陶瓷-聚合物到聚合物-陶瓷浓度范围的无机纳米颗粒的导电聚合物纳米复合材料。首先，我们简要讨论了混合离子-电子传输现象的基本方面，考虑了本体区域的载流子传输以及混合纳米复合材料有机-无机界面的影响。我们还回顾了用于表征结构、微观结构、化学成分以及混合离子-电子传输的最新仪器技术，特别关注与-MIECs相关的技术。拉曼成像和阻抗谱仪器技术作为相对简单且通用的工具被特别讨论，用于研究-MIECs不同区域（包括本体和界面区域）的载流子定位和传输，以揭示混合离子-电子传输机制。此外，我们还将提及不同的器件组装配置和测量实验，以分析不同特定应用中的混合离子-电子传导现象。最后，我们还将综述-MIECs的广泛且有前景的应用，主要应用于能量存储和转换领域，但也涉及电子学和生物电子学等新兴领域。
