Work

Prediction of Performance Degradation Due to Grain Coarsening Effects in Solid Oxide Fuel Cells

Year: 2017

Type: conference-paper

Abstract: Long term degradation of solid oxide fuel cells (SOFCs) is one of the biggest impediments to commercialization. Physics based models which can predict long term degradation can be crucial time and money saving tools. At the cell level, one of the primary modes of degradation comes from grain coarsening and the resulting changes in microstructure properties. In this study, a multi-physics model of a single fuel cell is presented which aims to predict performance loss as a function of time and temperature caused by coarsening in the electrodes of an LSM-YSZ/YSZ/Ni-YSZ SOFC. Microstructural properties are updated as a function of time from their initial values using functional relations derived from data obtained experimentally and from phase field models. Performance change over time predicted by the model is compared to experimental data and a study is performed on the effect temperature has on the degradation rate due to coarsening.

Source: ECS Transactions

DOI: 10.1149/07801.2323ecst

Authors: Jerry Hunter Mason, Ismail Bektas Celik, Shiwoo Lee, Harry Abernathy, Gregory A Hackett

Institutions: Oak Ridge Associated Universities, United States Department of Energy, West Virginia University, National Energy Technology Laboratory

Language: English

Topic: Advancements in Solid Oxide Fuel Cells

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

SDG: Affordable and clean energy

Open Access status: bronze

Funders: U.S. Department of Energy, Oak Ridge Institute for Science and Education, National Energy Technology Laboratory