In the world of energy technology, core-shell catalysts are gaining recognition for their potential to revolutionize efficiency and sustainability. These catalysts have a unique structure with a core material surrounded by a shell, offering enhanced performance in various applications. One of the significant impacts of core-shell catalysts is in the realm of fuel cells, especially hydrogen fuel cells, where they improve efficiency, leading to cleaner energy production and a reduction in carbon emissions. Beyond energy, these catalysts also hold promise in pharmaceuticals and chemicals, demonstrating their versatility across industries. From an environmental standpoint, core-shell catalysts are pivotal in addressing climate change by enabling a shift towards cleaner fuel sources like hydrogen, ultimately contributing to environmental sustainability.