According to foreign media reports, researchers are committed to developing the next generation of electric vehicles, and have encountered bottlenecks in developing lithium-ion batteries. However, a team of researchers at the University of Michigan pushed the performance of competitive electric vehicle technology and hydrogen fuel cells to new heights. Hydrogen fuel cell is a kind of zero-emission energy source, like a mixture of battery and fuel tank. It uses hydrogen as fuel and uses the chemical reaction between hydrogen and oxygen to generate electricity. The only emission is "water". One of the limitations of this technology is the inability to store a sufficient amount of hydrogen. Researchers at the University of Michigan have found a way to pack more hydrogen into small storage structures called "metal-organic frameworks" to increase battery energy density and ultimately increase fuel cell vehicle Expected endurance mileage. The metal-organic framework (MOF) is a design material, which is formed by coupling metal ions and organic molecules, has porous characteristics, and is one of the most promising hydrogen storage methods. Researchers at the University of Michigan collected all the information on the MOF, including the previously constructed and envisaged MOF, and then collected the information into a database. Subsequently, a high-throughput computer simulation was used to search the result database for data with good performance. The database contained nearly 500,000 MOFs. It has been determined that three MOFs have surpassed previous hydrogen storage records. The researchers synthesized such materials for batteries and demonstrated the performance of the batteries. The three MOFs are named SNU-70, UMCM-9, and PCN-610 / NU-100, each of which exceeds the performance of another MOF, IRMOF-20, certified by the research team in 2017. Electric vehicle designers have been seeking to increase efficiency by reducing the size of automobile power systems. University of Michigan researchers say that by increasing the amount of hydrogen stored by MOF material adsorbents, electric vehicle designers can reduce the amount of hydrogen stored in small-sized batteries. pressure.
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