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The development of robust and efficient trifunctional catalysts for oxygen reduction reaction (ORR), oxygen evolution reaction (OER), and hydrogen reaction (HER) is central to regenerative metal-air batteries and overall water splitting. It is still a big challenge to achieve an efficient integration of three functions in one freestanding electrode. Herein, a facile and upscalable strategy is demonstrated, to construct cobalt nanoparticle-encapsulated 3D conductive films (Co/CNFs), which were induced by in situ solid diffusion from bulk cobalt metal. Under high-temperature, volatile cobalt species from bulk cobalt foil are trapped by the contacted nitrogen-rich carbons, followed by catalytic growth of interconnected carbon tubes, forming the 3D structured film. This resulting film can be directly preformed as self-supporting and binder-free electrode, which simultaneously facilitates the ORR, OER, and HER with excellent activities and superior stability. Furthermore, such "all-in-one" film also exhibits remarkable performance for Zn-air batteries and overall water splitting, demonstrating its feasibility for practical applications.
This article was published in the following journal.
Name: Advanced materials (Deerfield Beach, Fla.)
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Stable cobalt atoms that have the same atomic number as the element cobalt, but differ in atomic weight. Co-59 is a stable cobalt isotope.
Unstable isotopes of cobalt that decay or disintegrate emitting radiation. Co atoms with atomic weights of 54-64, except 59, are radioactive cobalt isotopes.
The beta subunit of mitochondrial trifunctional protein that contains acetyl-CoA C-acyltransferase activity. There are four of these beta subunits in each trifunctional protein complex.
The alpha subunit of mitochondrial trifunctional protein. It contains both enoyl-CoA hydratase activity (EC 22.214.171.124) and long-chain-3-hydroxyacyl-CoA dehydrogenase activity (EC 126.96.36.199). There are four of these alpha subunits in each mitochondrial trifunctional protein molecule.
Works consisting of nonfiction films and video designed to teach, instruct, or train. (From Moving Image Materials: Genre Terms, 1988)