Recently, Wang Qi's research group in the Applied Plasma Research Room of the Institute of Plasma Physics, Chinese Academy of Sciences has made progress in methanol oxidation reaction, and the relevant content has been published in Applied Surface Science.

　　Recently, Wang Qi's research group from the Applied Plasma Research Room of the Institute of Plasma Physics, Chinese Academy of Sciences has made progress in the methanol oxidation reaction, and the relevant content has been published in Applied Surface Science.

　　The working principle of Direct Methanol Fuel Cell (DMFC) is that during the oxidation-reduction reaction process, the methanol at the anode loses electrons under the action of the catalyst, passes through the external circuit to the cathode, and hydrogen ions (acid electrolyte) pass through the electrolyte at the same time. The membrane is transferred from the anode to the cathode, and then the oxygen in the cathode is catalytically reduced to obtain electrons to form a current loop to provide electrical energy. Among them, the catalyst is very important to the methanol oxidation reaction of the anode. In recent years, the related research has become more and more in-depth, mainly from the aspects of improving the utilization rate of precious metal catalysts, modifying the carrier and preparing alloy catalysts to improve the anti-poisoning ability. As a precious metal catalyst with excellent performance, platinum (Pt) has always attracted the attention of researchers. Among them, the carrier supporting platinum nanoparticles often has a greater impact on the final catalytic performance. Graphene oxide is often used as a support for precious metals. However, if graphene oxide is used as a support, the electrochemical performance test cannot achieve the desired results.

　　The researchers self-assembled graphene oxide (GO) and carbon nanotubes (CNTs) to form a three-dimensional structure, then load platinum, and through hydrogen plasma discharge can obtain platinum-based three-dimensional graphene-carbon nano-carbon with a larger specific surface area Tube catalysts (Pt/GNTs) have excellent methanol oxidation catalytic performance. This technical route combines the advantages of GO and CNTs to form a three-dimensional composite structure through self-assembly, which increases the specific surface area and is more conducive to the distribution of platinum nanoparticles. Subsequently, the researchers prepared a series of different mass ratios of GO and CNTs in the experiment (GO: CNTs=0:1, 1:6, 1:4, 1:2, 1:1, 2:1, 4:1, 6:1 and 1:0) catalysts, it was found that GO: CNTs=1:2 has the best catalytic performance for methanol, with a current density of 691.1 mA/mg, which is 87.7% higher than the performance of commercial platinum-carbon catalysts. It is better than most other catalysts that have been reported, and it still maintains a higher current density after 3600s of CA test. This research is of great significance to the preparation of high-efficiency methanol oxidation catalysts, and it also provides a new idea for the preparation of three-dimensional graphene supports.

　　The research work has been supported by the National Natural Science Foundation of China, the Provincial Science Fund for Distinguished Young Scholars, the Special Talents Program of the Youth Promotion Association of the Academy, and the Dean’s Fund of the Research Institute.