極低温環境・水素貯蔵に用いる新規高分子材料の開発

抄録

Hydrogen energy is widely recognized as a key technology for achieving a carbon-neutral society because it does not emit carbon dioxide during use. Hydrogen can be produced from water and, when utilized in combination with renewable energy sources such as solar and wind power, functions as a clean and sustainable energy carrier that helps reduce dependence on fossil fuels. Nevertheless, the practical implementation of hydrogen energy requires the development of safe, durable, and reliable hydrogen storage and handling technologies. Materials used in hydrogen-related systems must withstand harsh environments, including high pressure, cryogenic temperatures, and continuous exposure to hydrogen. This paper reports recent progress in materials development for hydrogen storage applications. In particular, we focus on liner materials for highpressure hydrogen tanks, which are critical for gas tightness and long-term durability, and valve materials for liquid hydrogen systems, which must maintain mechanical strength and sealing performance under extremely low-temperature conditions. These developments highlight the importance of advanced materials in establishing a reliable hydrogen energy infrastructure.