A research team at Tianjin University has developed a groundbreaking digitally-assisted structure design for large proton exchange membrane (PEM) fuel cells. This approach is aimed at enhancing efficiency, reducing costs, and advancing fuel cell technology crucial for the hydrogen energy sector. The team's innovative method, recently published in Energy & Environmental Science, focuses on overcoming the limitations of traditional trial-and-error design processes, which often result in high expenses and prolonged development timelines. By leveraging digital modeling, the researchers created a numerical model that integrates experimental data to optimize flow field structures within PEM fuel cells. Fuel cells, known for their clean, efficient, and pollution-free attributes, are gaining prominence in various industries due to their high efficiency and zero emissions. However, manufacturers face challenges in developing efficient simulation models and innovative design solutions, hindering progress in power density and cost control. The team's digital methodology enables targeted structural optimizations, significantly improving the commercial viability of PEM fuel cells. Jiao Kui, the research team leader, emphasized the potential of the approach to expedite R&D processes, with computational efficiency enhanced by 10-20 times compared to traditional methods. Co-corresponding author Li Feiqiang from Beijing SinoHytec Co., Ltd., highlighted the substantial reduction in R&D time achieved through this new design method. Furthermore, the scientists believe that this innovative approach could be extended to enhance the design of other electrochemical devices like lithium batteries and electrolyzers, showcasing the broad applicability and transformative potential of their research.