聚合物阴极钽电解电容器被膜技术研究

摘要

This paper studied film-forming process of high frequency and low ESR organic chip solid - electrolyte tantalum capacitor employing PEDOT as a cathode material. Particularly,the influence of different polymerized temperatures,concentration of doping agent and solvent evaporated temperature on ESR of chip solid tantalum electrolytic capacitor was discussed. The results showed that desirable PEIOT film is achieved when polymerized temperature was about 0 to 10℃, concentration of doping agent was 3 ％ and solvent evaporated temperature was 80 ℃. As a result, the obtained organic chip tantalum capacitor exhibit lower ESR and better frequency characteristic than conventional capacitor.%研究了以导电聚合物PEDOT作为阴极材料的高频低ESR有机片式固体钽电解电容器的被膜技术,重点讨论不同的聚合温度、掺杂浓度和驱溶温度对降低片式固体钽电解电容器ESR的影响.研究结果表明当聚合温度为0～10℃、掺杂浓度为3%(W),驱溶温度80℃时,将得到致密的主链掺杂有效的PE-DOT膜层,从而得到较低的ESR,并表现出比MnO2片式钽电容器具有更好的频率特性.