Research Trends in Pyrometallurgical Recycling Processes for Spent Fuel Cell Catalysts

The increasing urgency of global warming and rising carbon emissions has accelerated the demand for sustainable energy technologies.Among these, fuel cells are recognized for their superior energy efficiency and minimal environmental footprint.However, the limited availability and high cost of critical materials, particularly platinum group metals (PGMs) and other valuable metals used in catalysts, present significant challenges, emphasizing the necessity of efficient recycling strategies to address resource scarcity and environmental concerns.Pyrometallurgical processes, characterized by high-temperature operations, have demonstrated effectiveness in impurity removal and high-purity metal recovery.These methods offer distinct advantages, including the elimination of chemical solvents, thus mitigating secondary environmental pollution.This study examines the latest advancements in catalyst recovery processes, a critical component of fuel cells, through pyrometallurgical techniques.Furthermore, the economic implications of these methods are evaluated, highlighting their cost-effectiveness relative to conventional recycling approaches.Finally, this paper explores the broader role of recycling technologies in optimizing resource utilization and advancing the sustainability of energy systems.