China News Service, Tianjin, March 22 (Sun Lingling, Jiao Defang) The reporter learned from Tianjin University on the 22nd that recently, the Yin Yan team of Tianjin University successfully developed a high-performance anionic membrane fuel cell. The battery has excellent performance and durability and is expected to "speed up" my country's hydrogen energy vehicle track. Relevant results have been published in the international authoritative journal "Joule".
Schematic diagram of the new high-temperature anion exchange membrane fuel cell. (Photo courtesy of Tianjin University)
According to reports, hydrogen fuel cells are an important part of the "hydrogen economy" and are considered to be one of the main ways to achieve "carbon neutrality". High-temperature anion exchange membrane fuel cells are the "leader" among hydrogen fuel cells and have the advantage of low cost. To truly realize the popularization and application of high-temperature anion exchange membrane fuel cells, its complex "water management" problem needs to be solved to further improve the durability of fuel cells. Currently, research in this field is still in the exploratory stage.
Professor Yin Yan's team from Tianjin University further designed and prepared a lightly branched PAP anion exchange membrane based on the polyarylpiperidine-type anion exchange membrane. This structural design will cause changes in intrinsic viscosity and density, which will have an important impact on the performance of the anion exchange membrane. After testing and characterization, it was found that the lightly branched anion exchange membrane achieves reasonable water absorption, swelling resistance and rapid water transmission, showing excellent water management performance; at the same time, it can maintain good chemical structure stability in high-temperature alkaline environments. properties and excellent mechanical properties. It is particularly worth mentioning that this new type of fuel cell solves the problem of mass transfer in the large current area, achieves excellent "water balance", and achieves a "win-win" of high power density output and excellent durability of anionic membrane fuel cells at high temperatures. ".
"The experimental results show that this new type of hydrogen fuel cell has the advantage of self-adjusting water balance with environmental changes, and is expected to help hydrogen energy vehicles embark on the track of large-scale application." Team leader, deputy director of the National Energy Storage Platform of Tianjin University, Professor Yin Yan from the School of Mechanical Engineering said, “In the future, we will continue to strive to be the first and good at developing new productive forces, and continue to generate new momentum through technological innovation.” (End)