浆料固含量对电池型电容器性能的影响  

Influence of slurry solid content on performance of battery-type capacitor

作　　者：刘富亮 付紫微 陈安国 张校刚[2] LIU Fuliang;FU Ziwei;CHEN Anguo;ZHANG Xiaogang(State Key Laboratory of Advanced Chemical Power Sources,Guizhou Meiling Power Sources Co.,Ltd.,Zunyi,Guizhou 563000,China;College of Materials Science and Technology,Nanjing University of Aeronautics and Astronautics,Nanjing,Jiangsu 211106,China)

机构地区：[1]贵州梅岭电源有限公司,特种化学电源全国重点实验室,贵州遵义563000 [2]南京航空航天大学材料科学与技术学院,江苏南京211106

出　　处：《电池》2024年第5期700-705,共6页Battery Bimonthly

摘　　要：研究固含量对浆料物理化学性质、极片微观形貌和电容器性能等的影响,建立浆料固含量、浆料分散稳定性、电极片导电网络结构与电容器功率之间的关联,以改善电池型电容器的功率特性。在干混捏合搅拌工艺的基础上,选取对电容器浆料和极片性能影响较大的固含量(45%、50%、55%)进行研究。当固含量为50%时,浆料悬浮液的接触角和表面张力较小;该固含量制得的极片具有较强的剥离强度(1.66 N)、较低的电阻率和优良的三维导电网络结构。50%固含量更适合高功率电池型电容器工业生产的制浆工艺,可改善浆料和极片的物理化学性能及工业批生产的极片质量。制备的电池型电容器极限脉冲功率可达4513.5 W,以10 C充电、20 C放电(100%DOD)循环2000次,容量保持率仍有93.15%。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 4513.5 W,the capacity retention rate is still 93.15%after 2000 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 

分 类 号：TM912.9[电气工程—电力电子与电力传动] TD98[矿业工程—选矿]