Process for preparing lithium ion battery anode material MnFe2O4/rGO with hydrothermal method
A lithium-ion battery and anode material technology, applied in battery electrodes, secondary batteries, circuits, etc., can solve the problems of limited application, large volume expansion rate, high resistivity, etc., and achieve improved recombination degree, excellent electrochemical performance, crystallization degree of improvement
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[0033] (1) adopt improved Hummers method to prepare graphite oxide powder;
[0034] (2) Disperse 20 mg of the graphite oxide powder obtained in step (1) in 20 mL of water, stir for 10 min, and sonicate for 3 h to form dispersion A;
[0035] (3) Add 20 mL of ethylene glycol to the dispersion A obtained in step (2), and add 0.2 g of polyvinylpyrrolidone (molecular weight: 58,000), and sonicate for 10 minutes to form dispersion B;
[0036] (4) 10mL of MnCl 2 4H 2 O solution (1mol / L) and 10mL of FeCl 3 ·6H 2 O solution (2mol / L) joins in the dispersion liquid B that obtains in step (3), stirs 30min, forms mixed liquid C;
[0037] (5) Slowly add 1.5 mL of ammonia water with a mass concentration of solute of 25% to the mixed solution C obtained in step (4), and stir for 1 hour to form mixed solution D;
[0038] (6) Add 20 mg of sodium borohydride to the mixed liquid D obtained in step (5), stir for 10 min, then transfer to the reaction kettle, and react at 180° C. for 10 h;
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