Preparation method and application of carbon-nitrogen doped ternary metal oxides
A ternary metal, carbon and nitrogen doping technology, applied in electrical components, battery electrodes, circuits, etc., can solve the problems of large irreversible capacity, large volume change, poor conductivity of ternary metal oxides, etc., and achieve electrochemical stability. and high specific capacity, excellent porous properties, and the effect of increasing active sites for lithium storage
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[0034] The preparation method of the carbon-nitrogen doped ternary metal oxide of the present invention comprises the following steps:
[0035] S1: Synthesis of Zn-IM framework materials in which zinc is coordinated with 2-methylimidazole;
[0036] S2: Weigh the Zn-IM zinc framework material and cobalt nitrate hexahydrate prepared in step S1 and disperse them in a solvent, react under microwave conditions to obtain a coordinated Co-Zn-IM framework material;
[0037] S3: Weigh the coordination Co-Zn-IM framework material prepared in step S2, and sodium dodecylsulfonate, hexadecyltrimethylammonium bromide and copper chloride dihydrate, and disperse them in a solvent, Reaction under microwave conditions to obtain a coordination trimetal hybrid Cu-Co-Zn-IM framework material;
[0038] S4: Calcining the coordinated trimetallic hybrid Cu-Co-Zn-IM framework material prepared in step S3 to obtain a carbon-nitrogen doped ternary metal oxide.
[0039] Specifically, in step S1, weigh 2...
Embodiment 1
[0044] This embodiment describes in detail the preparation method of carbon and nitrogen doped ternary metal oxides.
[0045] A method for doping ternary metal oxides with carbon and nitrogen, comprising the steps of:
[0046] S1: Weigh 40.195mmol of 2-methylimidazole and 4.126mmol of zinc nitrate hexahydrate respectively, add them to the first reaction vessel, and then add 70mL of anhydrous methanol to the first reaction vessel; place the first reaction vessel in a microwave with a power of Under 300W microwave conditions, react at 40-60°C for 3-10min; after the reaction is completed, the first reaction vessel is cooled to room temperature, and the reaction solution is centrifuged in a high-speed centrifuge at a centrifugal speed of 4000r / min for 5min to obtain a white Precipitation; the white precipitate was dried in a vacuum oven at 60° C. for 24 hours to obtain a white powdery solid Zn-IM framework material.
[0047] S2: Take the Zn-IM framework material and 2.062 mmol of...
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