Entropic restrictions control the electric conductance of superprotonic ionic solids
| العنوان: | Entropic restrictions control the electric conductance of superprotonic ionic solids |
|---|---|
| المؤلفون: | Andreu Andrio, Vicente Compañ, Iván Santamaría-Holek, Aldo Ledesma-Durán, C. García-Alcántara, S. I. Hernández |
| المصدر: | RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia instname |
| بيانات النشر: | The Royal Society of Chemistry, 2020. |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | Materials science, Orders of magnitude (temperature), Doping, General Physics and Astronomy, Ionic bonding, Thermodynamics, 02 engineering and technology, Crystal structure, Conductivity, 021001 nanoscience & nanotechnology, 01 natural sciences, Phase (matter), 0103 physical sciences, MAQUINAS Y MOTORES TERMICOS, Fast ion conductor, Ionic conductivity, Physical and Theoretical Chemistry, 010306 general physics, 0210 nano-technology |
| الوصف: | [EN] The crystallographic structure of solid electrolytes and other materials determines the protonic conductivity in devices such as fuel cells, ionic-conductors, and supercapacitors. Experiments show that a rise of the temperature in a narrow interval may lead to a sudden increase of several orders of magnitude of the conductivity of some materials, a process called a superprotonic transition. Here, we use a novel macro-transport theory for irregular domains to show that the change of entropic restrictions associated with solid-solid phase or structural transitions controls the sudden change of the ionic conductivity when the superprotonic transition takes place. Specifically, we deduce a general formula for the temperature dependence on the ionic conductivity that fits remarkably well experimental data of superprotonic transitions in doped cesium phosphates and other materials reported in the literature. ISH, SIH, CGA and ALD acknowledge financial support from UNAM-DGAPA under grants IN116617, IN117419 and IA104319. V. Compan is grateful to the Ministerio de Economia y Competitividad (MINECO), project reference: ENE/2015-69203-R. SIH is grateful to project LANCAD-UNAM-DGTIC-276. ALD acknowledges DGAPA-UNAM CJIC/CTIC/4692/2019. ISH acknowledges Prof. Vi ' ctor Castano for his hospitality during sabbatical leave in which this work was finished. |
| وصف الملف: | application/pdf |
| اللغة: | English |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b4a517dfea320e784c14d4a188dd5e93Test https://doi.org/10.1039/c9cp05486cTest |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....b4a517dfea320e784c14d4a188dd5e93 |
| قاعدة البيانات: | OpenAIRE |
| الوصف غير متاح. |