Novel conductive agent for lithium-sulfur primary battery and preparation method of novel conductive agent
A conductive agent and battery technology, applied in battery electrodes, non-aqueous electrolyte batteries, circuits, etc., can solve the problems of battery energy density reduction and achieve high conductivity, high conductivity, and high conductivity
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[0027] Example 1
[0028] First, add 1g of 3,4-dioxoethylthiophene (EDOT) monomer to 50mL of deionized water.
[0029] At 3000 rpm and stirring at room temperature, add 0.2 g of conductive carbon black to obtain a mixed solution, and then continue to stir. After 20 minutes, add 0.2 g of acetonitrile to the mixed solution, and then add 0.5 g of ammonium persulfate, ultrasonic 10 minutes and stirring at 50°C for 10 minutes, finally collect the black precipitate, wash it with deionized water 3 times, and dry it in an oven at 60°C as a conductive agent for lithium-sulfur primary batteries.
[0030] Then, the sulfur electrode and the conductive agent and binder prepared in this example were placed in a mortar at a mass ratio of 8:1:1, ground and mixed into a slurry, and the slurry was evenly scraped on the carbon-containing On the aluminum foil, it was dried at 55°C for 24 hours, and pressed into a sheet using a tablet press at a pressure of 5 MPa to obtain a positive electrode sheet. W...
Example Embodiment
[0032] Example 2
[0033] First, 1.5g of 3,4-dioxoethylthiophene (EDOT) monomer was added to 100mL of deionized water, and under the condition of stirring at a rotation speed of 4000 rpm and room temperature, 0.3g of conductive carbon black was added to it to obtain a mixture Then continue to stir. After 22 minutes, add 0.3g of acetonitrile to the mixed solution, then add 0.75g of ammonium persulfate, sonicate for 10 minutes, and stir for 10 minutes at 55°C. Finally, collect the black precipitate and wash with deionized water 3 times Afterwards, it is dried in an oven at 60°C as a conductive agent for lithium-sulfur primary batteries.
[0034] Then, the sulfur electrode and the conductive agent and binder prepared in this example were placed in a mortar at a mass ratio of 8:1:1, ground and mixed into a slurry, and the slurry was evenly scraped on the carbon-containing On the aluminum foil, it was dried at 55°C for 24 hours, and pressed into a sheet using a tablet press at a pressu...
Example Embodiment
[0036] Example 3
[0037] First, 2g of 3,4-dioxoethylthiophene (EDOT) monomer was added to 150mL of deionized water, and under the condition of stirring at room temperature at a speed of 5000 rpm, then 0.4g of conductive carbon black was added to it to obtain a mixture Then continue to stir. After 25 minutes, add 0.4g of acetonitrile to the mixed solution, then add 1g of ammonium persulfate, sonicate for 10 minutes, and stir for 10 minutes at 50℃. Finally, collect the black precipitate and wash it with deionized water for 3 times. , Dried in a 60 ℃ oven, as a lithium-sulfur primary battery conductive agent.
[0038] Then put the sulfur electrode and the conductive agent and binder made in this experiment in a mortar at a mass ratio of 8:1:1, grind and mix them into a slurry, and evenly scrape the slurry on the carbon-containing aluminum foil. It was dried at 55°C for 24 hours, and pressed into a sheet using a tablet press at a pressure of 5 MPa to obtain a positive electrode sheet...
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