Efficient nitrogen-doped carbon nanotube oxygen reduction electrocatalyst and preparation method thereof

• Main Authors: XIONG XINHONG, ZHOU XIAOZHUANG, TU JING, CUI JIAXI, WANG ZHENZHEN, CHEN BO
• Format: Patent
• Language: Chinese; English
• Published: 29.03.2024
• Subjects: APPARATUS THEREFOR; BASIC ELECTRIC ELEMENTS; CHEMISTRY; ELECTRICITY; ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTIONOF COMPOUNDS OR NON-METALS; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; METALLURGY; NANOTECHNOLOGY; PERFORMING OPERATIONS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; TRANSPORTING

The invention belongs to the technical field of ORR electrocatalysts, and discloses an efficient nitrogen-doped carbon nanotube oxygen reduction electrocatalyst and a preparation method thereof, and the preparation method comprises the following steps: preparing composite slurry of metal salt ions, ionic liquid and hollow microspheres; carrying out high-temperature calcination on the composite slurry in an argon-hydrogen mixed atmosphere furnace; carrying out acid pickling on the composite powder obtained after calcination to remove the silicon dioxide balls; repeatedly cleaning the powder subjected to acid treatment with deionized water, and then performing vacuum freeze drying; and testing the redox electrocatalytic activity of the powder. The obtained nitrogen-doped carbon nanotube powder has the characteristics of high porosity, high flux, high oxygen reduction electro-catalysis performance and the like, the preparation method is simple, and the nitrogen-doped carbon nanotube powder is suitable for an ele