Hyoung-Juhn Kim

Jun 3, 2024 | nature.com | Seungju Lee |Jong Geun Seong |Son-Jong Hwang |Katie Lim |Hyoung-Juhn Kim |Gyeongseok Gwak | +2 more

AbstractOperating polymer electrolyte membrane (PEM) fuel cells at high temperatures can simplify water management and allow integration with high-purity fuel processing units. However, existing polybenzimidazole (PBI)-based PEM fuel cells face challenges due to the instability of proton transport above 160 °C. Here we report a PEM composed of para-PBI (p-PBI) and cerium hydrogen phosphate (CeHP) that can be used in a fuel cell at up to 250 °C.