Evaluation of a Single Cell and Candidate Materials with High-Water-Content Hydrogen in a Generic Solid Oxide Fuel Cell Stack Test Fixture, Part I: Test Fixture and Electrochemical Performance

摘要

A generic solid oxide fuel cell test fixture intended to evaluate candidate materials under realistic conditions was developed. A commerical NiO-YSZ-supported YSZ electrolyte and LSM-YSZ cathode cell was tested to evaluate the stability of candidate materials. The cell was tested in two stages of low- and high-water-content fuel at 800℃. Part I of the work will describe the test fixture, electrochemical performance of the cell, and postmortem analysis. In part I, the cell showed a substantial degradation in the first stage and no degradation afterward. Impedance and I-Vcurves were recorded. Optical and scanning electron microscopywere used for characterization and seal assessment.