CARBON FIBER NON-WOVEN FABRIC

PROBLEM TO BE SOLVED: To provide a carbon fiber non-woven fabric having both of a high gas permeability and a low resistivity, in particular, a low resistivity in the thickness direction, which can be favorably used as a gas diffusion layer in a polymer-type fuel cell.SOLUTION: A carbon fiber non-wo...

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1. Verfasser:	TAKANO KYOSUKE
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS BASIC ELECTRIC ELEMENTS BRAIDING CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS COTTON-WOOL ELECTRICITY FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS,NON-WOVEN FABRICS KNITTING LACE-MAKING MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARYMATERIAL NATURAL OR ARTIFICIAL THREADS OR FIBRES NON-WOVEN FABRICS PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY SPINNING TEXTILES TRIMMINGS WADDING
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Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a carbon fiber non-woven fabric having both of a high gas permeability and a low resistivity, in particular, a low resistivity in the thickness direction, which can be favorably used as a gas diffusion layer in a polymer-type fuel cell.SOLUTION: A carbon fiber non-woven fabric comprises a carbon fiber continuous filament having a fiber diameter of 3.0 μm or less, the fabric having an apparent density of 0.05 to 1.0 g/cmand a thickness of 50 to 200 μm.SELECTED DRAWING: Figure 1 【課題】高い気体の通過性と低い抵抗値を両立し、特に厚み方向の抵抗値を低くした、高分子型燃料電池のガス拡散層として好適に用いることのできる炭素繊維不織布を提供する。【解決手段】繊維径３．０μｍ以下の炭素繊維連続フィラメントからなり、見掛け密度が０．０５〜１．０ｇ／ｃｍ３かつ厚みが５０〜２００μｍである炭素繊維不織布。【選択図】図１