Short-branched carbon nanotube / alloy / carbon fiber self-supporting catalytic electrode material, preparation method and application thereof

Abstract

The present application belongs to the field of catalysis technology, and relates to a short-branched carbon nanotube / alloy / carbon fiber self-supporting catalytic electrode material and a preparation method and application thereof. A cloth-like carbon fiber is used as a three-dimensional skeleton, short-branched carbon nanotubes are connected to the surface of the three-dimensional skeleton through covalent bonds, and double-metal alloy nanoparticles are embedded on the tube body of the short-branched carbon nanotubes, the length of the short-branched carbon nanotubes is 0.1-2.5 microns, and the double-metal alloy nanoparticles are Co3Fe7 nanoparticles, Fe 0.64 Ni 0.36 nanoparticles or CoNi nanoparticles. The catalytic electrode material provided by the present application can work efficiently and stably under strong alkaline conditions, and simultaneously has dual-function activity of ORR and OER. Experiments show that when the catalytic electrode material is used as an anion exchange membrane water electrolysis anode catalyst, it can be stably operated for a long time; when used as a flexible zinc-air battery cathode catalyst, its cycle life is better than that of a commercial platinum-carbon and ruthenium dioxide catalyst.

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