Nitrogen-doped micro-mesoporous carbon/transition metal oxide composite material and preparation method thereof

A technology of transition metals and composite materials, applied in the manufacture of hybrid/electric double layer capacitors, hybrid capacitor electrodes, etc., can solve problems such as uneven distribution of metal compound nanoparticles, unfavorable metal compound precursor solution infiltration, composite electrode material structure blockage, etc. , to achieve the effect of low cost, excellent performance and improved adsorption
CN111599602BActive Publication Date: 2021-07-27JIANGNAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
JIANGNAN UNIV
Publication Date
2021-07-27

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Abstract

The invention discloses a nitrogen-doped micro-mesoporous carbon / transition metal oxide composite material and a preparation method thereof, belonging to the technical field of new energy storage materials. The composite material of the invention is obtained by in-situ high-temperature pyrolysis growth of ultra-small transition metal oxide nanoparticles in a three-dimensional network structure of nitrogen-doped micro-mesoporous carbon by using various transition metal oxide salts as precursors. The nitrogen-doped micro-mesoporous carbon / transition metal oxide composite material prepared by the present invention fully utilizes the size advantage of nitrogen-doped micro-mesoporous carbon, so that the prepared composite material has a higher specific surface area and a more complex The microscopic pore structure provides paths and spaces for the transport and storage of electrolyte ions. At the same time, the successful loading of ultra-small transition metal oxide nanoparticles brings the possibility of efficient adsorption of electrolyte ions, which in turn greatly improves the electrochemical energy storage performance.
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Description

technical field

[0001] The invention relates to a nitrogen-doped micro-mesoporous carbon / transition metal oxide composite material and a preparation method thereof, belonging to the technical field of new energy storage materials. Background technique

[0002] As a common type of energy storage device, supercapacitors have the advantages of high power density, high capacity, and high cycle life, and have been widely used in daily production and life. However, compared with battery energy storage technology, the low power density of supercapacitors greatly reduces the possibility of it being used as a gapless and long-term energy supply. In order to overcome this problem, scientists double-regulated the electrolyte and electrode materials of the supercapacitor in order to expand the potential window of the supercapacitor device, thereby increasing the power density of the overall device. At present, the commonly used electrolytes for supercapacitors are mainly aqueous electr...

Claims

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