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The performance and price of oxygen reduction catalysts have always been one of the most critical factors restricting the development of new energy. It is the dream of fuel cell researchers to obtain high-performance non-metal oxygen reduction catalysts. At present, the most widely studied oxygen reduction catalysts for carbon materials mostly use graphene, carbon nanotubes and other expensive carbon materials, and the catalytic performance has never been able to reach the level of commercial platinum carbon catalysts. Therefore, the development of cheap and efficient oxygen reduction catalysts is currently the focus of research.
Recently, under the strong support of the National Natural Science Foundation of China, the Ministry of Science and Technology, and the Chinese Academy of Sciences, Xu Weilin, a researcher at the Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, and a research team led by a Xing Xing researcher prepared a series of high-efficiency oxygen reduction catalysts using common inexpensive carbon blacks. The results were published on ACS catalysis.
The team obtained a simple and inexpensive oxygen reduction carbon catalyst by doping the common carbon black with fluorine, which is superior to the alkaline catalyst in terms of activity, lifetime, resistance to poisoning, and long-term stability. Commercial platinum carbon catalysts and any other non-platinum catalysts that have been reported, with an oxygen reduction onset potential 30 mV higher than commercially available carbon supported platinum catalysts, is one of the highest performance oxygen reduction catalysts present in alkaline systems. The performance of the alkaline methanol fuel cell assembled using this catalyst is superior to commercial carbon-supported platinum catalysts. The research group has successfully obtained a cost-effective non-metallic oxygen-reducing electrocatalyst that can replace commercial carbon-supported platinum. Related technologies have already applied for patents.
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