Electric double-layer capacitor

H - Electricity – 01 – G

Patent

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H01G 9/058 (2006.01) H01G 9/038 (2006.01)

Patent

CA 2496544

An electric double-layer capacitor comprising a pair of polarized electrodes, a separator interposed between these polarized electrodes, and an electrolyte, wherein polarized electrodes used mainly contain active carbon having the peak of the pore diameter distribution of a micro-hole determined by an MP method within 4.0 × 10-10 to 8.0 × 10-10 m, and the electrolyte used contains an ionic liquid as an electrolytic salt, whereby providing an electric double-layer capacitor being excellent in low-temperature characteristics and high in electrostatic capacity

La présente invention concerne un condensateur électrique à double couche comprenant une paire d'électrodes polarisées, un séparateur intercalé entre lesdites électrodes polarisées et un électrolyte, lesdites électrodes polarisées utilisées contenant principalement du charbon actif dont la crête de répartition du diamètre des pores d'un micro-trou déterminé par un procédé MP est comprise entre 4,0 x 10 ?-10¿ et 8,0 x 10?-10¿ m, l'électrolyte utilisé contenant un liquide ionique en tant que sel électrolytique, ce qui permet d'obtenir un condensateur électrique à double couche présentant d'excellentes caractéristiques à basse température et une capacité électrostatique élevée.

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