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- W294524651 abstract "Graphite fiber-polymer matrix composites containing about 40 w/o fibers have specific resistivities on the order of 1 to 10 ohm-cm. Such resistivity values are low enough for these materials to be considered for a wide range of electrochemical applications. Three graphite fiber-epoxy matrix composite electrodes were investigated in this study; a randomly oriented composite containing 38 v/o (50 w/o) pitch-based 15 ..mu..m-diameter fibers, a parallel oriented composite containing 50 v/o (65 wo) PAN precursor 7 ..mu..m-diameter fibers, and a perpendicularly oriented composite containing 50 v/o (65 w/o) PAN precursor 7 ..mu..m-diameter fibers. For the purpose of comparison, three additional carbon-containing electrodes were the purpose of comparison, three additional carbon-containing electrodes were also investigated in this study, namely, pyrolitic carbon, anode-grade bulk graphite, and a specially prepared graphite fiber brush electrode containing 12 ..mu..m-diameter pitch-based fibers. With the exception of the graphite-fiber brush electrode, all electrodes were used in a stationary flat-plate configuration. Cyclic voltammetry (between oxygen and hydrogen evolution) was performed on each carbon-containing electrode in 1 N H2SO4, 30 w/o KOH, and 2M KCl. From the cyclic voltammograms, surface functional groups were identified, and the double layer capacitance was measured for each electrode. Chronoamperometry was used to study twomore » diffusion-controlled electrode processes on each electrode.« less" @default.
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- W294524651 date "1985-08-19" @default.
- W294524651 modified "2023-09-27" @default.
- W294524651 title "Electrochemical behavior of graphite fiber-polymer composites. Final report, 15 January 1982-31 May 1985" @default.
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