The effects of solid content on the physical and chemical performance of the slurry,the microstructure of the electrode plates and the performance of the capacitor are studied.The correlation between slurry solid content,slurry dispersion stability,electrode plates conductive network structure,and capacitor power is established to improve the power characteristics of battery-type capacitors.Based on the dry mixing kneading and stirring process,the solid content of 45%,50%and 55%,which has a significant impact on the performance of capacitor slurry and electrode plates is selected for research.When the solid content is 50%,the slurry suspension has a small contact angle and surface tension.At this solid content,the prepared electrode plates exhibits strong peel strength(1.66 N),low electrical resistivity,and excellent three-dimensional conductive network structure.The solid content of 50%is more suitable for the slurry process of industrial production of high-power battery-type capacitors,which can improve the physical and chemical performance of the slurry and electrode plates,as well as the quality of the electrode plates produced in industrial batches.The limit pulse power of the prepared battery-type capacitor can reach 4 513.5 W,the capacity retention rate is still 93.15%after 2 000 cycles of charging at 10 C and discharging at 20 C(100%DOD).
关键词
固含量/干混捏合搅拌/电池型电容器/分散稳定性
Key words
solid content/dry mixing kneading and stirring/battery-type capacitor/dispersion stability
维普
万方数据