Conductive polymer suspension and its solid electrolytic capacitor
A solid-state electrolysis and suspension technology, applied in solid electrolytic capacitors, capacitor electrolytes/absorbents, capacitor components, etc., can solve problems such as insufficient withstand voltage, reduce product reliability and short circuit, and achieve higher working voltage and higher stability. reliability and reliability, improving the effect of insufficient withstand voltage
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Embodiment 1
[0036] Put 577.8 g of deionized water in a 1L round-necked flask, weigh 21.2g of sodium polystyrene sulfonate with an average molecular weight (Mw) of 50,000 and a solid content of 30%, and control the reaction temperature at 20°C to 25°C. Stir, weigh 2.485g of 3,4 ethylenedioxythiophene, add it into the stirring sodium polystyrene sulfonate, and stir the solution for 30 minutes. Then add 0.3442g of iron sulfate and 5.895g of ammonium persulfate, and the color of 3,4 ethylenedioxythiophene polymerization can be observed to change from light green→dark green→light blue→dark blue. After 48 h of continuous stirring, the reaction was terminated. Use 100ml of strongly acidic ion exchange resin and 250ml of weakly basic ion exchange resin to remove inorganic salts, stir for 4 hours to remove ion exchange resin, and obtain suspension A.
[0037] 10 g of suspension A was placed in a 10 mm petri dish, and dried at 150° C. for 2 hours to obtain a solid content of suspension A of 1.5%. ...
Embodiment 2
[0041] Weigh 20g of polyvinyl alcohol with a molecular weight of 12,000 and dissolve it in 20g of deionized water, and dissolve it in the deionized water at 90°C and a rotation speed of 300rpm to obtain the pressure resistance enhancer B. Take 10 g of the conductive polymer suspension A2, add the withstand voltage enhancer B1g, and stir for 30 minutes at a speed of 300 rpm to obtain the conductive polymer suspension B1.
[0042] Put the conductive polymer suspension B1 in the impregnation tray, put the solid electrolytic capacitor core package in the impregnation tray and soak for 10 minutes, vacuum the vacuum decompression impregnation machine with a vacuum value of 12.5psi for 20 minutes, and then break the vacuum to clean the core package Put the remaining material into a high-temperature oven to dry the core package at 150°C for 60 minutes, repeat the above steps 5 times, and obtain a core package impregnated with electrolyte. The core package is packaged into a commercial...
Embodiment 3
[0044] Weighed 20 g of polyvinyl alcohol with a molecular weight of 6000 and dissolved it in 20 g of deionized water, and dissolved it in the deionized water at 120° C. and a rotation speed of 300 rpm to obtain a pressure resistance enhancer C. Take 10 g of the conductive polymer suspension A2, add 1 g of the withstand voltage enhancer C, and stir for 30 minutes at a speed of 300 rpm to obtain the conductive polymer suspension C1.
[0045] Put the conductive polymer suspension C1 in the impregnation tray, put the solid electrolytic capacitor core package in the impregnation tray and soak for 10 minutes, vacuum the vacuum decompression impregnation machine with a vacuum value of 12.5psi for 20 minutes, and then break the vacuum to clean the core package Put the remaining material into a high-temperature oven to dry the core package at 150°C for 60 minutes, repeat the above steps 5 times, and obtain a core package impregnated with electrolyte. The core package is packaged into a...
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