Stability of Polymer Tantalum capacitors with pre-polymerized PEDOT (slurry PEDOT) cathodes were investigated under different environmental conditions. Capacitance dependence on temperature, frequency, and dc bias voltage were investigated in humid and dry capacitors with different dielectric thicknesses. Electrical measurements and scanning electron microscopy (SEM) were used to characterize the capacitors. Humid capacitors were observed to have higher capacitance than dry capacitors for all dielectric thicknesses. The capacitance for all dielectric thicknesses was observed to increase with temperature in both humid and dry capacitors. Humid capacitors showed a strong temperature dependence at lower temperatures while dry capacitors showed a strong temperature dependence at higher temperatures. These temperature effects were more pronounced in thinner dielectric capacitors, and the results were explained by the integrity of the dielectric-polymer interface. The capacitance for all dielectric thicknesses was also observed to decrease with an increase in frequency, both in humid and dry capacitors. The frequency effect was more pronounced in humid capacitors with thinner dielectrics. These results were explained by a distributed capacitance model, secondary transitions of the polar segments of the polymer cathode, and lower reactance and lower self-resonance frequency of the thinner dielectric capacitors. The technological principles of improving environmental stability of Polymer Tantalum capacitors are also discussed.

在不同环境条件下研究了具有预聚合 PEDOT（浆状 PEDOT）阴极的聚合物钽电容器的稳定性。在具有不同电介质厚度的潮湿和干燥电容器中研究了电容对温度、频率和直流偏置电压的依赖性。使用电测量和扫描电子显微镜 (SEM) 来表征电容器。对于所有电介质厚度，观察到湿电容器比干电容器具有更高的电容。观察到所有电介质厚度的电容在潮湿和干燥电容器中都随着温度而增加。湿电容器在较低温度下表现出强烈的温度依赖性，而干电容器在较高温度下表现出强烈的温度依赖性。这些温度效应在较薄的介电电容器中更为明显，结果可以通过介电聚合物界面的完整性来解释。在潮湿和干燥电容器中，还观察到所有电介质厚度的电容随着频率的增加而降低。在具有较薄电介质的潮湿电容器中，频率效应更为明显。这些结果可以通过分布电容模型、聚合物阴极极性段的二次转变以及较薄的介电电容器的较低电抗和较低自谐振频率来解释。还讨论了提高聚合物钽电容器环境稳定性的技术原理。在潮湿和干燥电容器中，还观察到所有电介质厚度的电容随着频率的增加而降低。在具有较薄电介质的潮湿电容器中，频率效应更为明显。这些结果可以通过分布电容模型、聚合物阴极极性段的二次转变以及较薄的介电电容器的较低电抗和较低自谐振频率来解释。还讨论了提高聚合物钽电容器环境稳定性的技术原理。在潮湿和干燥电容器中，还观察到所有电介质厚度的电容随着频率的增加而降低。在具有较薄电介质的潮湿电容器中，频率效应更为明显。这些结果可以通过分布电容模型、聚合物阴极极性段的二次转变以及较薄的介电电容器的较低电抗和较低自谐振频率来解释。还讨论了提高聚合物钽电容器环境稳定性的技术原理。聚合物阴极极性链段的二次跃迁，以及更薄的介电电容器的低电抗和低自谐振频率。还讨论了提高聚合物钽电容器环境稳定性的技术原理。聚合物阴极极性链段的二次跃迁，以及更薄的介电电容器的低电抗和低自谐振频率。还讨论了提高聚合物钽电容器环境稳定性的技术原理。