초록 ▼

Composite electrodes including carbon nanofibers (fibrils) and an electrochemically active material are provided for use in electrochemical capacitors. The fibril composite electrodes exhibit high conductivity, improved efficiency of active materials, high stability, easy processing, and increase th

Composite electrodes including carbon nanofibers (fibrils) and an electrochemically active material are provided for use in electrochemical capacitors. The fibril composite electrodes exhibit high conductivity, improved efficiency of active materials, high stability, easy processing, and increase the performance of the capacitor. A method for producing the composite electrodes for use in electrochemical capacitors is also provided.

대표청구항 ▼

1. A process for preparing a composite electrode includinga) an electrochemically active material selected from the group consisting of oxides, hydrous oxides, carbides and nitrides, and b) carbon nanofibers having a surface area greater than about 100 m2/gm which exhibit electrical capacitance and

1. A process for preparing a composite electrode includinga) an electrochemically active material selected from the group consisting of oxides, hydrous oxides, carbides and nitrides, and b) carbon nanofibers having a surface area greater than about 100 m2/gm which exhibit electrical capacitance and which serve to consolidate the electrode, comprising the steps of:a) dissolving the electrochemically active material in water to form an active material solution, b) dispersing the nanofibers in water to from a nanofibers dispersion, c) adding the active material solution to the nanofibers dispersion while stirring to form a composite mixture, d) filtering and washing the composite mixture to produce a composite electrode comprising a fibril mat and an active material.