Electricity: electrical systems and devices – Electrolytic systems or devices – Double layer electrolytic capacitor
Reexamination Certificate
2006-08-17
2011-12-06
Thomas, Eric (Department: 2835)
Electricity: electrical systems and devices
Electrolytic systems or devices
Double layer electrolytic capacitor
Reexamination Certificate
active
08072733
ABSTRACT:
An electrochemical capacitor comprising a nonaqueous electrolyte and a pair of polarizable electrodes, wherein carbon nanotubes are used as an electrode material for at least one of the positive electrode and the negative electrode, the carbon nanotubes have a specific surface area of at least 700 m2/g and contain semiconductive carbon nanotubes, and the electrode material exhibits a voltage dependency of differential capacity by electrochemical doping. The electrochemical capacitor solves the problems associated with activated carbon electrodes and, exploiting the excellent characteristics of carbon nanotubes, has increased capacitance and increased energy density, therefore realizing a reduced internal resistance and a prolonged service life.
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Hata Kenji
Hatori Hiroaki
Tanaike Osamu
National Institute of Advanced Industrial Science and Technology
Sinclair David M
Thomas Eric
Wenderoth , Lind & Ponack, L.L.P.
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