A kind of preparation method of carbon fluoride modified iron trifluoride cathode material
A technology of ferric trifluoride and positive electrode materials, applied in the direction of positive electrodes, battery electrodes, active material electrodes, etc., can solve the problems of being unable to use and the performance of FeF3 not meeting the requirements, etc., and achieve extended working time and good uniform mixing effect , the effect of prolonging the holding time
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Embodiment 1
[0027] A preparation method of a carbon fluoride modified iron trifluoride positive electrode material, comprising the following steps:
[0028] (1) adding the carbon fiber material to absolute ethanol, stirring for 1 h to obtain a uniform mixed solution;
[0029] (2) adding Fe powder passing through a 200-mesh sieve into the mixed solution, stirring for 1.5h to obtain a uniform mixture solution;
[0030] (3) heating the mixture solution to 50°C, continue stirring until a paste is obtained;
[0031] (4) Place the paste in a high-energy ball mill for high-energy ball milling, the rotational speed is 3000 r / min, and the high-energy ball milling time is 2 minutes, then stop running, cool for 20 minutes, run the high-energy ball mill again, repeat this step, and the total high-energy ball milling time reaches 2h, The mixed slurry is obtained; the high-energy ball mill uses a high-energy ball mill cup, and zirconia balls are added during ball milling;
[0032] (5) drying the mixe...
Embodiment 2
[0036] A preparation method of a carbon fluoride modified iron trifluoride positive electrode material, comprising the following steps:
[0037] (1) adding the carbon fiber material to acetone, stirring for 1.5h, to obtain a uniform mixed solution;
[0038] (2) adding Fe powder passing through 300 mesh sieves to the mixed solution, stirring for 1h to obtain a uniform mixture solution;
[0039] (3) heating the mixture solution to 60°C, and continuing to stir until a paste is obtained;
[0040] (4) Put the paste in a high-energy ball mill for high-energy ball milling, the rotational speed is 5000r / min, the high-energy ball milling time is 1min, then stop running, cool for 15min, run the high-energy ball mill again, repeat this step, the total time of high-energy ball milling reaches 1.5h , to obtain a mixed slurry; the high-energy ball mill uses a high-energy ball mill cup, and zirconia balls are added during ball milling;
[0041] (5) drying the mixed slurry at a temperature ...
Embodiment 3
[0045] A preparation method of a carbon fluoride modified iron trifluoride positive electrode material, comprising the following steps:
[0046] (1) adding the carbon fiber material to the dispersing agent, stirring for 2h to obtain a uniform mixed solution, the dispersing agent includes acetone and absolute ethanol, and the weight ratio of acetone and absolute ethanol is 1:1;
[0047] (2) adding Fe powder passing through a 250 mesh sieve into the mixed solution, stirring for 2h to obtain a uniform mixture solution;
[0048] (3) heating the mixture solution to 70°C, and continue stirring until a paste is obtained;
[0049] (4) Place the paste in a high-energy ball mill for high-energy ball milling, the rotational speed is 8000r / min, the high-energy ball milling time is 30s, then stop running, cool for 15min, run the high-energy ball mill again, repeat this step, the total high-energy ball milling time reaches 1h, The mixed slurry is obtained; the high-energy ball mill uses a hi...
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