ʻO ka supercapacitor, i ʻike ʻia he ultracapacitor a i ʻole Electrical Doule-Layer Capacitor、Kāpena gula、capacitor farad. Hoʻopaʻa ka capacitor i ka ikehu ma ke ʻano o ka hoʻopiʻi paʻa e kūʻē i ka hopena electrochemical.ʻO ka hoʻohana ʻana i kahi ʻokoʻa uila ma nā papa maikaʻi a maikaʻi ʻole e hoʻopiʻi i ka capacitor.
He mea electrochemical ia, akā, ʻaʻole ia e hana i nā hopena kemika i ke kaʻina o ka mālama ʻana i ka ikehu, hiki ke hoʻohuli ʻia, ʻo ia ke kumu e hiki ai ke hoʻopiʻi pinepine ʻia nā supercapacitors a hoʻokuʻu ʻia i nā haneli haneli.
Hiki ke ʻike ʻia nā ʻāpana o ka super capacitor e like me nā papa electrode porous non-reactive, ma ka pā, uila, pā maikaʻi e huki i nā ion maikaʻi ʻole i loko o ka electrolyte, nā pā maikaʻi ʻole e huki i nā ion maikaʻi, ua hana maoli ʻia ʻelua papa mālama capacitive. ʻO nā ion maikaʻi i hoʻokaʻawale ʻia. kokoke i ka pā maikaʻi ʻole, a ʻo nā ion maikaʻi ʻole kokoke i ka pā maikaʻi.