Ai Suzuki is Associate Professor at New Industry Creation Hatchery Center at Tohoku University. She computationally expected gradual voltage drop in long-term, more than 20000 hours usage of high-temperature proton exchange membrane fuel cells. Also, she analyzed the appropriate amount of polymer electrolyte in the polymer electrolyte membrane fuel cell by counting both electron and hydrogen cation flows. Further, she investigated the sintering behavior of Pt on various catalyst supports. Various types of Pt diffusions depending on support materials such as ceria, zirconia, and alumina were confirmed.