20201109，我院教师苏石川、卞婷（通讯）、研究生黄龙等的研究成果“Fe/Fe3C-NC Nanosheet/Carbon Nanotube Composite Electrocatalysts for Oxygen Reduction Reaction”在《ACS Applied Nano Materials》上发表。The construction of active and durable electrocatalysts based on high abundance of elements towards oxygen reduction reaction (ORR) is critical for proton exchange membrane fuel cells and metal-air batteries. Here a composite nanostructure composed of Fe/Fe3C-NC nanosheets and carbon nanotubes (G-Fe/Fe3C-NC/CNTs) was designed by simply annealing a glucose-chelated Fe coordinated metal-organic frameworks. The introduction of glucose can not only effectively prevent collapse of the initial 2D leaf-like ZIFs during the carbonization process, but also boost the growth of CNTs. Benefiting fromefficient Fe/Fe3C and Fe-Nx moieties, high specific surface area and electron conducting highways provided by the unique composite structure, the obtained G-Fe/Fe3C-NC/CNTs electrocatalysts achieved an impressive ORR activity with higher positive onset potential of 1.02 V and half-wave potential of 0.87 Vover the commercial Pt/C. Significantly, it also exhibits outstanding stability after 6000 CV cycles with nearly negligible decay in half-wave potential, which makes it one of the promising Pt-free catalysts for ORR.
下载地址：https://pubs.acs.org/doi/10.1021/acsanm.0c02698