Ceria-Nickel Fuel Electrode for Reversible and Fuel Flexible Operation: Scaling-up from Electrolyte- to Electrode-Supported Cell

Abstract

The energy transition calls upon the urgent necessity of clean and scalable energy production. In that context, green hydrogen delivery will be key to a successful change. Efforts to support higher efficiencies and degradation resistance are the main objectives of our research. In this work, we show the scaling-up step taken from electrolyte- to electrode-supported reversible high-temperature fuel cells, figuring a novel structure based on 8YSZ, CeO2, and NiO. The results show that the performance can be leveraged more than twofold from one concept to the other. The cells were operated with hydrogen, methane, and ethanol serving as fuels directly to the fuel electrode chamber, and under steam electrolysis.