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Title: Treated carbon fibers with improved performance for electrochemical and chemical applications

Abstract

A treated mesophase carbon fiber is disclosed having a high density of exposed edges on the fiber surface, and a method is described for making such a treated fiber. A carbon electrode is also described which is constructed from such treated mesophase carbon fibers. The resulting electrode, formed from such treated flexible carbon fibers, is characterized by a high density of active sites formed from such exposed edges, low corrosion, and good mechanical strength, and may be fabricated into various shapes. The treated mesophase carbon fibers of the invention are formed by first loading the surface of the mesophase carbon fiber with catalytic metal particles to form catalytic etch sites on a hard carbon shell of the fiber. The carbon fiber is then subject to an etch step wherein portions of the hard carbon shell or skin are selectively removed adjacent the catalytic metal particles adhering to the carbon shell. This exposes the underlying radial edges of the graphite-like layers within the carbon shell of the mesophase carbon fiber, which exposed radial edges then act as active sites of a carbon electrode subsequently formed from the treated mesophase carbon fibers. 14 figs.

Inventors:
;
Issue Date:
Research Org.:
University of California
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
321235
Patent Number(s):
5,874,166
Application Number:
PAN: 8-708,151
Assignee:
Univ. of California, Oakland, CA (United States) PTO; SCA: 360601; PA: EDB-99:030586; SN: 99002064375
DOE Contract Number:  
AC03-76SF00098
Resource Type:
Patent
Resource Relation:
Other Information: PBD: 23 Feb 1999
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; CARBON FIBERS; LIQUID CRYSTALS; SURFACE PROPERTIES; SYNTHESIS; ELECTRODES; CATALYSTS; ETCHING

Citation Formats

Chu, X., and Kinoshita, Kimio. Treated carbon fibers with improved performance for electrochemical and chemical applications. United States: N. p., 1999. Web.
Chu, X., & Kinoshita, Kimio. Treated carbon fibers with improved performance for electrochemical and chemical applications. United States.
Chu, X., and Kinoshita, Kimio. Tue . "Treated carbon fibers with improved performance for electrochemical and chemical applications". United States.
@article{osti_321235,
title = {Treated carbon fibers with improved performance for electrochemical and chemical applications},
author = {Chu, X. and Kinoshita, Kimio},
abstractNote = {A treated mesophase carbon fiber is disclosed having a high density of exposed edges on the fiber surface, and a method is described for making such a treated fiber. A carbon electrode is also described which is constructed from such treated mesophase carbon fibers. The resulting electrode, formed from such treated flexible carbon fibers, is characterized by a high density of active sites formed from such exposed edges, low corrosion, and good mechanical strength, and may be fabricated into various shapes. The treated mesophase carbon fibers of the invention are formed by first loading the surface of the mesophase carbon fiber with catalytic metal particles to form catalytic etch sites on a hard carbon shell of the fiber. The carbon fiber is then subject to an etch step wherein portions of the hard carbon shell or skin are selectively removed adjacent the catalytic metal particles adhering to the carbon shell. This exposes the underlying radial edges of the graphite-like layers within the carbon shell of the mesophase carbon fiber, which exposed radial edges then act as active sites of a carbon electrode subsequently formed from the treated mesophase carbon fibers. 14 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1999},
month = {2}
}