CPC H01M 4/60 (2013.01) [C07F 15/065 (2013.01); H01M 2004/021 (2013.01)] | 20 Claims |
1. A hollow cobaltosic oxide carbon-nitrogen composite, wherein a chemical formula of the hollow cobaltosic oxide carbon-nitrogen composite is Co3O4—COF-T-D@C—N; wherein, COF-T-D is a covalent organic framework, T is 1,3,5,7-tetraaminoadamantane; D is 2,6-dialdehyde-1,5-dihydroxynaphthalene “—” means bonding, and “@” means doping; and
the hollow cobaltosic oxide carbon-nitrogen composite is prepared by a method comprising the following steps of:
(1) mixing 1,3,5,7-tetraaminoadamantane, 2,6-dialdehyde-1,5-dihydroxynaphthalene, and a cosolvent, adding an acidizing fluid for acidification, and heating for reaction to obtain a first solid COF-T-D, wherein a molar ratio of the 1,3,5,7-tetraaminoadamantane to the 2,6-dialdehyde-1,5-dihydroxynaphthalene is 1:(1.2 to 3);
(2) adding an organic solvent and a cobalt salt into the first solid COF-T-D for mixing and stirring, reacting, carrying out solid-liquid separation, and taking a solid phase to obtain a second solid Co—COF-T-D, wherein a solid-liquid-solid ratio of the first solid COF-T-D to the organic solvent and the cobalt salt is (10 to 20) g:(20 to 40) mL:(0.1 to 0.3) g; and
(3) washing the second solid Co—COF-T-D, adding nitrogen, performing heat treatment, cooling, and adding oxygen for oxidization to obtain the hollow cobaltosic oxide carbon-nitrogen composite Co3O4—COF-T-D@C—N.
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