Electric double layer capacitor

Details Electric double layer capacitor Electric double layer capacitor

2007-09-11

2007-09-11

Ha, Nguyen T. (Department: 2831)

Electricity: electrical systems and devices

Electrolytic systems or devices

Double layer electrolytic capacitor

C361S504000, C361S508000, C361S512000, C361S516000, C361S518000, C029S025010, C029S025030

Reexamination Certificate

active

11525968

ABSTRACT:
An electric double layer capacitor is composed of a pair of current collectors, a positive polarizable electrode provided on one of the pair of current collectors, a negative polarizable electrode provided on the other of the pair of current collectors, a separator between the positive and negative polarizable electrodes, and an organic electrolytic solution which impregnates at least the positive and negative polarizable electrodes and the separator. The capacitor has a theoretical amount of ions Qtdefined asin-line-formulae description="In-line Formulae" end="lead"?Qt(moles)=C×V÷96,500,in-line-formulae description="In-line Formulae" end="tail"?wherein C is the rated capacitance (farads) of the capacitor and V is the rated voltage (volts), and an amount of ions Qein the organic electrolytic solution, such that Qe/Qt=1.7 to 3.5. The capacitor has a high voltage rating, excellent cycle characteristics during high-current charging and discharging, and a low internal resistance in low-temperature environments.

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