High-activity cobalt-based catalyst as well as preparation method and application thereof

• Main Authors: AKO TATSUKI, DENG TIANYIN, LIU WEI, WAN YANMING, ZHANG XIAOQIANG, XU YI, LIU CONGMIN, WANG XUEYING, SHI JUNJIE
• Format: Patent
• Language: Chinese; English
• Published: 09.04.2024
• Subjects: ALLOYS; APPARATUS THEREFOR; CHEMISTRY; COMPOUNDS THEREOF; ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTIONOF COMPOUNDS OR NON-METALS; FERROUS OR NON-FERROUS ALLOYS; INORGANIC CHEMISTRY; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; METALLURGY; NANOTECHNOLOGY; NON-METALLIC ELEMENTS; PERFORMING OPERATIONS; SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS

The invention relates to a high-activity cobalt-based catalyst and a preparation method and application thereof.The preparation method comprises the following steps that graphene is placed in a potassium permanganate solution, then washed with ethyl alcohol and placed in a nitrogen-filled drying oven to be dried, and graphene oxide is obtained; adding the obtained graphene oxide, a cobalt source and a nickel source into a solvent according to a mass ratio of (0.5-2): (0.5-5): (0.5-5), and carrying out ultrasonic stirring; adding the stirred mixture into a hydrothermal reaction kettle, putting the hydrothermal reaction kettle into a nitrogen-filled drying oven, and reacting at 150-250 DEG C for 6-15 hours; and taking out the hydrothermal reaction kettle, cooling, separating and cleaning precipitates obtained by reaction, putting the cleaned precipitates into a nitrogen-filled drying box, and drying at 15-25 DEG C for 6-10 hours to obtain the catalyst. Compared with a platinum-based catalyst and a ruthenium-bas