最小的大容量电容器--Evans混合电容器

介绍了一种由钽阳极、Ta2O5介质、液体电解质和RuO2阴极组成的高能量密度电容器——Evans混合电容器 (Evans Hybrid capacitors)。它具有与电化学电容器相当的能量密度和比电解电容器更完善的交流特性。单元工作电压达215 V。目前已实现了用改进封装技术将若干个该类电容器并联封装在同一外壳内。给出了50 V,18 mF混合电容的性能数据。

The Littlest Big Capacitor-An Evans Hybrid

High-energy-density capacitors with a tantalum metal anode, Ta2O5 dielectric, aqueous electrolyte, and RuO2 cathode have been described. Known as Evans Hybrid capacitors, these devices have the high energy density of electrochemical capacitors with the improved a.c. behavior of electrolytic capacitors. Single-cell working voltages up to 215 volts have been demonstrated. Capacitors of this type, with multiple elements arranged in parallel within a single case, and improved packaging techniques have now been assembled. Performance data on a 50 V, 18 mF hybrid capacitor are presented.