H2020Индивидуална стипендия2021–2023

OPTICS · On Photo-enhanced Transport in Ionically Conducting Solids

„Хоризонт 2020“ — Действия „Мария Склодовска-Кюри“

Период: 2021-09-01 → 2023-08-31
Финансиране от ЕС: 162 806 €
Участници: 1
Схема: MSCA-IF

Линиите свързват координатора с партньорите.

Накратко на български

Електрокерамичните материали се изследват за това дали ултравиолетовата светлина може да ускори движението на йони в тях. Това помага за разработването на по-бързи и стабилни батерии и горивни елементи, необходими за енергийната стратегия на ЕС.

Този кратък обзор е генериран от изкуствен интелект

Кратко обяснение, генерирано от езиков модел по текста на CORDIS. Оригиналът е по-долу.

Резултати накратко

On Photo-enhanced Transport in Ionically Conducting Solids

The ability of certain crystalline oxides to conduct ions at a significant rate forms the basis for a range of electrochemical devices such as solid oxide fuel cells, solid oxide electrolyser cells, and batteries. These devices are key for the EU Energy 2050 long-term strategy, hence there is an increasing demand for the development of faster and more stable ionic conducting materials. Ionic transport in oxides requires the long-range motion of crystalline defects and is limited by one or more of the following processes: bulk diffusion, incorporation/excorporation into the material, or transport across grain boundaries or interfaces. Fundamentally, these limits are caused by either the concentration of ionic or electronic defects, migration barriers (according to the bond strengths and steric constraints of the ions), interactions between defects, or the formation of space charge regions that deplete charge carriers. Traditionally, materials development has been based on either searching for new oxides or tuning the chemical composition and microstructure of current materials to maximise ionic transport. But progress has been slow, with newly developed materials failing to meet the strict requirements to replace the state-of-the-art materials at a commercial level. The OPTICS project aims to investigate and exploit new methods for enhancing ionic transport in electroceramic materials, namely the use of above-bandgap radiation. Several recent reports have suggested that the concentration and effective mobility of ionic defects may be varied by UV light, but currently this effect is poorly understood. Light-enhanced ionic transport has the potential to rapidly progress beyond current state-of-the-art in technologically relevant ionically conducting oxides. While experientially and computationally non-trivial, demonstrating light-enhanced ionic transport would represent significant progress from an academic standpoint, but crucially, would also have the potential to usher in a new class of opto-ionic fuel cells, electrolysers, and batteries.

Текст от CORDIS, на английски · Данни: CORDIS, © Европейски съюз

Цел на проекта

Ionic conducting materials form the basis of solid oxide fuel cells, solid oxide electrolyser cells, and batteries, which form a key component of the EU Energy 2050 long-term strategy. There is a need to develop faster ionic conductors, however progress has been slow. Recently, several studies have demonstrated photo-enhanced iodine-ion diffusion as well as suggested interactions between photons and oxygen-ion defects in oxide materials may be possible. The proposed research plan, OPTICS, aims to address the question: Can changes in ion transport be enhanced in technologically relevant ionically conducting oxides (O-ion, H-ion, and Li-ion) by light illumination? There are challenges in studying these effects using conventional methods. Namely, absorption only occurring at the surface in thick samples, artefacts in conductivity measurements stemming from photocurrents and electrode effects, and difficulties understanding the mechanisms due to the indirect nature of photon-ion interactions. In OPTICS, these challenges will be overcome employing isotopic tracer diffusion measurements on epitaxial thin films carried out in tandem with atomistic and continuum simulations to identify the underlying mechanisms. Combining the Host’s (Prof. Roger De Souza) expertise in tracer diffusion and atomistic modelling with the Applicants experience with optical measurements on epitaxial films, photo-enhanced ionic diffusion will be studied experimentally and computationally in the bulk, at surfaces, and at interfaces of nanostructured materials. Light-enhanced ionic transport has the potential, though OPTICS, to lead to substantial improvements in technologically relevant ionic conductors leading to a new class of photo-ionic fuel cells, electrolysers, and batteries.

Оригинален текст от CORDIS (на английски).

Участници

RHEINISCH-WESTFAELISCHE TECHNISCHE HOCHSCHULE AACHEN · AachenКоординаторГермания