Hunan University JMCA reports high-performance non-precious metal oxygen reduction catalyst

Recently, Hong Min, a graduate student in the Department of Applied Chemistry, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, has made important progress in the research of non-precious metal oxygen reduction catalysts. Fuel cell applications provide a new solution for the rational design and large-scale preparation of atomic-scale catalysts with low cost and high metal utilization. Related results were published in Journal of Materials Chemistry A (Impact Factor 10.733, paper link Journal of Materials Chemistry A, titled "Facile solution synthesis of FeNx atom clusters supported on nitrogen-enriched graphene carbon aerogel with superb electrocatlytic performance toward oxygen reduction reaction", 2019, DOI: 10.1039 / C9TA09104A).

 

Proton exchange membrane fuel cells (PEMFC) are recognized as the ultimate power source for electric vehicles. As an important reaction of fuel cells, oxygen reduction reaction (ORR) is a precious metal Pt / C catalyst commonly used in commercial fuel cells due to its slow kinetic process. The large-scale promotion of the use of fuel cell vehicles is mainly limited by the Pt-based catalysts in terms of resources and costs, stability, and resistance to CO poisoning. In view of these problems, research and development of low-cost new high-stability, high-activity non-noble metal catalysts and simple and easy preparation technologies are the key links and effective ways to promote the application of fuel cell technology. Based on this, Hong Min et al. Proposed a method of loading FeNx clusters with nitrogen-rich graphene aerogels to achieve a uniform distribution of FeNx on the surface of the three-dimensional nitrogen-rich porous carbon material. CN / g-GEL has excellent stability, catalytic activity and high metal utilization rate (840 mA mgFe-1at 0.80V). The half-wave potential of the oxidant reaches 0.90V, and its performance is better than that of commercial Pt / C catalysts and Non-precious metal catalysts have been reported so far.

 

Hong Min's supervisors, Professor Zhang Xiaohua, Professor Chen Jinhua, and Assistant Professor Du Cuicui, are co-corresponding authors. The research team has long been committed to research on energy conversion storage electrode materials and biosensing. His research interests include proton exchange membrane fuel cells, liquid fuel cells, metal-air batteries, water electrocatalysis, ultracapacitors and electrochemical biosensing, and photoelectric biosensing. Biosensors and Bioelectronics, ACSAppliedMaterials & Interfaces, Chemical Communications, Journal of Materials Chemistry A, Electrochimica Acta and other international top journals have published many papers.

 

Source Hunan News Network