Research Progress in SrTiO3-based Fuel Electrode Materials for Reversible Solid Oxide Cells
), Linghong LUO1,3(), Abstract
Reversible solid oxide cells (RSOCs) could be alternately operated in SOFC/SOEC mode, which could realize sustainable cycle of clean energy and electric energy, thus realizing “peak shifting and valley filling”. Because of the advantages of high efficiency and long-time/large-scale energy storage etc., RSOCs have broad application prospects in the construction of Energy Internet. Conventional Ni-YSZ fuel electrode materials are prone to sulfur poisoning when using fuel gases containing sulfur impurities and carbon accumulation, such as hydrocarbon fuels. Strontium titanate (SrTiO3) perovskite has been the most widely studied RSOCs fuel electrode material, due to its highly adjustable structure and properties, high structural stability and thermochemical stability, and strong anti-carbon accumulation and anti-sulfur poisoning ability.Research progress of SrTiO3-based RSOCs fuel electrodes are reviewed, while the related mechanisms are described. The challenges of SrTiO3-based fuel electrode in the future application of RSOCs are discussed.
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