A Multi-Scale Modelling Approach and Experimental Calibration Applied to Commercial SOFCs. (30th May 2017)

• Record Type: Journal Article
• Authors: Mastropasqua, Luca; Donazzi, Alessandro; Campanari, Stefano
• Is Part Of: ECS transactions. Volume 78:Number 1(2017)
• Page Start: 2645
• Page End: 2658
• Publication Date: 2017-05-30
• Subjects: Electrochemistry -- Periodicals; Electrochemistry; Periodicals; Electronic journals; Electronic journal; 541.37
• DOI: 10.1149/07801.2645ecst
• Languages: English
• ISSNs: 1938-5862

Abstract

Abstract : The present study aims at laying the theoretical basis for a multi-scale modelling approach applicable to state-of-the-art commercial SOFCs. The proposed multi-scale model is built with the main purpose to understand how micro-scale characteristics of the PEN structure and the thermo-chemical and electrochemical phenomena, which occur in the electrode and electrolyte assembly, may affect the overall performance of a complete cell and ultimately of the stack. This study presents the integration of two-dimensional finite volume models: a 1D micro-scale model and a 1D (or 2D) macro-scale (channel/cell) model. The analysis evidences how stack optimisation should focus on the micro-structure characteristics, which should also change along the reactant channels ( x direction) in relation to the local variation of temperature and composition. The model therefore lays the basis for cell local optimisation and design-led techniques required for performance enhancement.