Natural Hematite for Next‐Generation Solid Oxide Fuel Cells

Abstract

Natural hematite ore is used as a novel electrolyte material for advanced solid oxide fuel cells (SOFCs). This hematite‐based system exhibits a maximum power density of 225 mW cm −2 at 600 °C and reaches 467 mW cm −2 when the hematite is mixed with perovskite‐structured La 0.6 Sr 0.4 Co 0.2 Fe 0.8 O 3–δ . These results demonstrate that natural materials for next‐generation SOFCs can influence the multiutilization of natural resources, thereby affecting the environment and energy sustainability.