Electricity: electrical systems and devices – Electrolytic systems or devices – Solid electrolytic capacitor
Reexamination Certificate
2011-05-24
2011-05-24
Ha, Nguyen T (Department: 2835)
Electricity: electrical systems and devices
Electrolytic systems or devices
Solid electrolytic capacitor
C361S502000, C361S509000, C361S512000, C361S516000, C361S519000
Reexamination Certificate
active
07948739
ABSTRACT:
A composite composition for use in an electrode for electrochemical capacitors, comprising: (a) an electrochemically active material; and (b) exfoliated graphite flakes that are substantially interconnected to form a porous, conductive graphite network comprising pores, wherein at least a portion of the active material resides in a pore of the network. The composite composition is characterized by having liquid accessible pores which provide a surface area greater than about 200 m2/gm, preferably greater than 500 m2/gm, more preferably greater than 1000 m2/gm, and most preferably greater than 1000 m2/gm. Also disclosed is a capacitor that includes at least an electrode comprising such a composite composition. A supercapacitor featuring such a composite electrode exhibits an exceptionally high capacitance value and high electrical conductivity.
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Jang Bor Z.
Zhamu Aruna
Ha Nguyen T
NANOTEK Instruments, Inc.
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