Preparation method of potassium ion battery negative electrode composite material and obtained material
The invention discloses a potassium ion battery negative electrode composite material preparation method, which comprises: adding indium nitrate hydrate and terephthalic acid into an N, N-dimethylformamide solution to dissolve, adding a sodium acetate solution, carrying out a heating reaction, colle...
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Main Authors | , , , , |
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Format | Patent |
Language | Chinese English |
Published |
30.05.2023
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Subjects | |
Online Access | Get full text |
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Summary: | The invention discloses a potassium ion battery negative electrode composite material preparation method, which comprises: adding indium nitrate hydrate and terephthalic acid into an N, N-dimethylformamide solution to dissolve, adding a sodium acetate solution, carrying out a heating reaction, collecting the mixed liquid, carrying out centrifugal washing, taking the washed precipitate, and drying to obtain In-MOF; in-MOF is vulcanized into an In2S3/C material by using thioacetamide at the temperature of 400-450 DEG C in an argon atmosphere, and the mass ratio of thioacetamide to In-MOF is (4-5): 1; the method comprises the following steps: performing nitrogen doping on an In2S3/C material by using urea, and reacting at 300-600 DEG C in an argon atmosphere; according to the N-In2S3/C potassium ion battery negative electrode composite material disclosed by the invention, N replaces S and is doped on In2S3, so that defects and active sites are increased, the polarity and conductivity of chemical bonds are enhanc |
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Bibliography: | Application Number: CN202310120193 |