Polyacrylonitrile-based carbon felt modification method for in-situ growth of boron-carbon-nitrogen nanotubes

• Main Authors: LIU LANSONG, ZHANG XIHAO, LIU JIANGUO
• Format: Patent
• Language: Chinese; English
• Published: 24.05.2024
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR; LAUNDERING; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; TEXTILES; TREATMENT OF TEXTILES OR THE LIKE; TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS,FABRICS, FEATHERS, OR FIBROUS GOODS MADE FROM SUCH MATERIALS

The invention belongs to the technical field of flow batteries, and particularly relates to a modification method of polyacrylonitrile-based carbon felt for in-situ growth of boron-carbon-nitrogen nanotubes. The method comprises the following steps: firstly, carrying out hydrothermal treatment on a polyacrylonitrile-based carbon felt by using concentrated nitric acid and deionized water, and drying; the preparation method comprises the following steps: preparing an aqueous solution of urea, a boron-containing soluble compound and polyethylene glycol, putting the dried carbon felt into the solution, carrying out in-situ growth of boron-carbon-nitrogen nanotubes in a drying oven, drying, and finally carbonizing in a tubular furnace in an inert atmosphere to obtain the in-situ growth boron-carbon-nitrogen nanotube polyacrylonitrile-based carbon felt. Compared with an unmodified carbon felt, the prepared in-situ growth boron carbon nitrogen nanotube polyacrylonitrile-based carbon felt has the advantages of large