Nonaqueous electrolyte, electrical double-layer capacitors,...

Details Nonaqueous electrolyte, electrical double-layer capacitors,... Nonaqueous electrolyte, electrical double-layer capacitors,...

2006-12-26

2006-12-26

Thomas, Eric W. (Department: 2831)

Electricity: electrical systems and devices

Electrolytic systems or devices

Double layer electrolytic capacitor

C361S503000, C361S525000, C252S062200

Reexamination Certificate

active

07154737

ABSTRACT:
Secondary cells and electrical double-layer capacitors of excellent charge-discharge efficiency, stability and low-temperature properties can be obtained using nonaqueous electrolytes which contain an ionic liquid that has general formula (1) below and is liquid at not higher than 50° C. and an ion-conductive polymer.In formula (1), R1to R4are each independently an alkyl group of 1 to 5 carbons or an alkoxyalkyl group of the formula R′—O—(CH2)n— (R′ being methyl or ethyl, and the letter n being an integer from 1 to 4), and any two from among R1, R2, R3and R4may together form a ring, with the proviso that at least one of R1to R4is an alkoxyalkyl group of the above formula. X is a nitrogen atom or a phosphorus atom, and Y is a monovalent anion.

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