Electrical double-layer capacitor

摘要

An electrical double-layer capacitor has a construction wherein a pair of positive and negative polarizing electrodes whose chief constituent is active carbon laminated (or coiled) in a condition with a separator sandwiched therebetween and with their outsides held by respective aluminum collection electrodes are accommodated in a case made of metal etc. in a condition impregnated with electrolyte using propylene carbonate as solvent. The polarizing electrodes have a solid-state structure wherein the active carbon particles are the chief constituent (first substance) and these active carbon particles 3 are connected in network fashion by a second substance such as for example nano-size carbon black which is of higher electrical conductivity than the active carbon and of smaller size than the active carbon particles.