Recently, Prof. Zeng Jie of the University of Science and Technology of China, in collaboration with Prof. Peng Zhenmeng of the University of Akron, and Prof. Rui Rui of the Shanghai Institute of Applied Physics, has made significant progress in the development of cathode catalysts for proton exchange membrane fuel cells. They have designed a ruthenium-doped platinum ultrafine nanowire catalyst that exhibits high activity and high stability in the cathode oxygen reduction of fuel cells, which can significantly reduce costs and accelerate the commercialization of this clean energy conversion technology. process.

The proton exchange membrane fuel cell is a new type of energy device, featuring high energy density, high energy conversion efficiency, and low emission of pollutants. However, due to the existence of catalytic activity, lack of stability, and high cost of the electrocatalysts of its key materials, the application of the electrocatalysts is affected.

In response to these problems, Chinese and American researchers have recently designed and synthesized a ruthenium-doped platinum ultrafine nanowire catalyst with the help of atomic-level fine synthesis technology. Its diameter is only 1.3 nm, and the utilization of platinum atoms is as high as 48.6. %. Studies have shown that the mass activity and specific activity of this novel catalyst are 7.8 and 5.4 times higher than those of commercially available platinum carbon catalysts. At the same time, the catalyst has lost only 9.2% of mass activity after being recycled for 10,000 times in an oxygen atmosphere. Commercial platinum carbon catalyst loss in this case reached 72.3%, indicating that the new catalyst has obvious advantages.

The international academic journal "The American Chemical Society" published the results a few days ago. The co-first author of the paper is Prof. Zeng Jie's research group Huang Hongwen and Li Wei. (Reporter Xu Haitao)


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