The article discusses various research studies focused on advancements in high-temperature proton exchange membrane fuel cells. Researchers have been working on developing new materials and technologies to improve the efficiency and performance of fuel cells, especially in heavy-duty applications. They have investigated the use of protonated phosphonic acid electrodes and polybenzimidazole membranes to enable high-power operation in heavy-duty vehicle fuel cells. One of the key challenges addressed in the research is the need for high-temperature operation in heavy-duty transportation. By exploring materials like polybenzimidazole and phosphoric acid, scientists aim to enhance proton conduction efficiency and overall cell performance in challenging environments. Additionally, studies have focused on nanoengineering approaches, such as nanocrack-regulated self-humidifying membranes and phosphosilicate nanoclusters, to improve the durability and longevity of fuel cells running at elevated temperatures. These innovations offer promising solutions for enhancing the stability and efficiency of high-temperature proton exchange membrane fuel cells. Overall, the research in this field shows a positive trend towards overcoming technical challenges and advancing the capabilities of fuel cell technology for heavy-duty applications.