电子元件与材料2018，Vol.37Issue(1)：28-34,7.DOI:10.14106/j.cnki.1001-2028.2018.01.006
超高压工作电解液闪火电压提升机理及应用研究
Enhancing mechanism of sparking voltage in ultra-high voltage working electrolyte and its application
摘要
Abstract
Electrolyte is a key component of aluminum electrolytic capacitors, its performance characteristics directly determine the performance of the capacitor. The effect of electrolyte conductivity and water content on the performance of the electrolytic solution of carboxyl ammonium salt system for aluminum electrolytic capacitors was studied by Fourier transform infrared spectroscopy (IR), anodic oxidation curve and so on, and the related mechanism was discussed. The results show that the conductivity of the electrolyte is an important factor affecting the sparking voltage, and the sparking voltage increases nonlinearly with the decrease in conductivity. When the conductivity is reduced to(500~700)×10-6S/cm, the sparking voltage can be as high as 650 V or more. The water content in the electrolyte only affects the oxidation efficiency of the electrolyte. The higher the water content,the higher the oxidation efficiency of the electrolyte. The electrolyte for 600 V ultra-high voltage aluminum electrolytic capacitor is developed by adjusting the conductivity to 668×10-6S/cm and controlling the water content(mass fraction)to 3.62%.The life of the capacitor that using the electrolyte can be up to 3000h at 85℃.关键词
电解液/闪火电压/电导率/水含量/超高压/电容器Key words
electrolyte/spark voltage/conductivity/water content/ultra-high voltage/capacitor分类
信息技术与安全科学引用本文复制引用
李焱根,贾明,艾燕,艾亮,李劼..超高压工作电解液闪火电压提升机理及应用研究[J].电子元件与材料,2018,37(1):28-34,7.基金项目
工信部工业转型升级强基工程专项资助(0714-EMTC02-5271) （0714-EMTC02-5271）
湖南省战略性新兴产业科技攻关项目(2015GK1045) （2015GK1045）
