Researchers at Chalmers University of Technology in Sweden have made significant strides in studying fuel cell degradation to enhance the efficiency and longevity of hydrogen fuel cells, crucial for the viability of fuel cell-powered heavy-duty vehicles. The innovative method developed by the research team allows for a comprehensive analysis of how fuel cell components deteriorate over time, a key obstacle in the commercial success of hydrogen vehicles. Unlike electric vehicles reliant on batteries, hydrogen-powered vehicles offer emission-free operation and reduce the burden on the electricity grid by enabling hydrogen production and storage during off-peak hours. The Chalmers researchers have delved into the ageing mechanisms of fuel cells by disassembling and tracking specific particles within the cell using advanced electron microscopes. This approach offers detailed insights into the degradation processes at both the nano and micro levels, pinpointing the exact areas and timing of degradation. By bridging the gap between studying aged fuel cells and understanding the mid-life processes, the research paves the way for developing new materials and control methods to extend fuel cell lifespan. The U.S. Department of Energy highlights the importance of enhancing fuel cell durability for the commercial viability of hydrogen vehicles, emphasizing the need for fuel cells to withstand thousands of hours of operation. The Chalmers team's work not only advances the fundamental understanding of fuel cell degradation but also lays the groundwork for future developments in fuel cell technology, driving towards longer-lasting and more efficient hydrogen fuel cells.