High-performance oxygen-evolution CoSn2/Ni3Sn4@NC/C composite catalyst and preparation method and application thereof

• Main Authors: ZHANG ZHILIANG, LI JUNHUA, LONG XUANDA, QIAN DONG, LIU GUIYU, SU KANDA, XU DEYAO
• Format: Patent
• Language: Chinese; English
• Published: 09.08.2019
• Subjects: APPARATUS THEREFOR; BASIC ELECTRIC ELEMENTS; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; ELECTRICITY; ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTIONOF COMPOUNDS OR NON-METALS; METALLURGY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; THEIR RELEVANT APPARATUS; TRANSPORTING

The invention discloses a high-performance oxygen-evolution CoSn2/Ni3Sn4@NC/C composite catalyst and a preparation method and application thereof. The composite catalyst is prepared in the step that cobalt-nickel selenide nano-particles and nitrogen-doped carbon are supported on a carbon material together. The preparation method comprises the steps that after a nitrogen-containing small organic molecule compound, cobalt salt and nickel salt are subjected to liquid mixing, a solvent is evaporated, drying is conducted, the mixture of the nitrogen-containing small organic molecule compound, the cobalt salt and the nickel salt is subjected to first calcination in a protective atmosphere, a calcined product and a carbon material are uniformly stirred in a dimethylformamide-water mixed solutionand then subjected to a solvothermal reaction, and a product obtained after the solvothermal reaction is subjected to second calcination in a protective atmosphere to obtain the high-performance oxygen-evolution CoSn2/Ni3Sn4@