Energy production and storage using nanotechnology

[Ubertino]

US Patent 7,974,075 Peng, et al., July 5, 2011

Electrode of supercapacitor and method for manufacturing the same

Abstract
A method for manufacturing an electrode of a supercapacitor is provided. First, a poly(acrylonitrile) (PAN) fabric is provided. The PAN fabric includes a plurality of PAN fibers each having a diameter of about 50-500 nm. Then, the PAN fabric undergoes a heat treatment so that the PAN fibers are carbonized to form a carbon fiber textile. The carbon fiber fabric includes a plurality of carbon fibers each having a diameter of about 50-500 nm. The surface of each carbon fiber is nano-porous having a plurality of nano pores of about 1-50 nm in diameter. The total surface area of the nano pores account for about 85-95% of the total surface area of the carbon fibers. The carbon fiber fabric is then cut to acquire the electrode of the supercapacitor.

Inventors:
Peng; Chao-Chun (Hsinchu, TW), Chang; Haw-Jer (Hsinchuang, TW), Lin; Wen-Ting (Caotun Township, Nantou County, TW)

Assignee:
Taiwan Textile Research Institute (Tu-Chen, Taipei Hsien, TW)

Appl. No.:
12/334,737
Filed:
December 15, 2008
Foreign Application Priority Data
Dec 31, 2007 [TW]
96151466 A

What is claimed is:

1. A method for manufacturing an electrode of a supercapacitor, comprising: providing a poly(acrylonitrile) fabric, the poly(acrylonitrile) fabric comprising a plurality of poly(acrylonitrile) fibers each having a diameter of about 50-500 nm; heat treating the poly(acrylonitrile) fabric to form a carbon fiber fabric comprising a plurality of carbon fibers each having a diameter of about 50-500 nm, wherein a surface of each of the carbon fibers has a plurality of nano pores of about 1-50 nm in diameter, and a total surface area of the nano pores accounts for about 85-95% of a total surface area of the carbon fibers; and cutting the carbon fiber fabric to acquire the electrode.

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