Ceria-based Cathodes for High Performance Electrolysis Cells

高温的H2O和CO2裂解将在可持续能源供应中发挥关键作用。具有铈基阴极的固体氧化物电解电池（soec）具有最高性能和稳定性的潜力，特别是在二氧化碳电解中。以目标为导向的高性能和长期稳定的基于铈的SOEC阴极的开发需要深入了解材料的电催化活性、界面反应和机械行为之间高度复杂的相互作用，以及它们与多孔电极的3D微观结构的相关性。因此，我们提出了一个跨学科的项目，将电化学和原位分析的基础研究，材料加工微观结构分析和材料建模联系起来。这种方法学上广泛的策略是本提案的独特优势，将允许解开并从而理解微观结构，机械和电化学性能及其与处理二氧化硅基SOEC阴极的相关性的复杂相互作用。因此，我们将获得新一代电化学性能最高的燃料电极所需的全部知识，这些电极具有低长期降解和焦化敏感性，以及高机械稳定性。

High-temperature H2O and CO2 splitting will play a key role for a sustainable energy supply. Solid oxide electrolysis cells (SOECs) with ceria-based cathodes offer the potential of highest performance and stability, especially in CO2 electrolysis. Target-oriented development of high performing and long-term stable ceria- based SOEC cathodes requires an in-depth understanding of the highly complex interplay between the materials’ electro-catalytic activity, interface reactions, and mechanical behaviour as well as their relevance for the 3D microstructure of porous electrodes. Therefore, we propose an interdisciplinary project connecting basic research in electrochemistry and in-situ analytics, materials processing microstructure analysis, and materials modelling.This methodologically broad strategy is the distinctive strength of this proposal and will allow disentangling and thus understanding the complex interplay of microstructural, mechanical, and electrochemical properties and their relevance for processing of ceria-based SOEC cathodes. As a result, we will obtain the entire knowledge required for a novel generation of electrochemically highest performing fuel electrodes, with low longterm degradation and coking susceptibility, as well as high mechanicalstability.