Patent ID: 8927065
Filing Date: 2015-01-06
Classification: C01B,D01D,D01F

Abstract:
1. A process for producing a continuous graphitic fiber from living graphene molecules, said process comprising: (a) preparing a graphene oxide gel having living graphene oxide molecules dissolved in a fluid medium wherein said graphene oxide molecules contain an oxygen content higher than 10% by weight; (b) dispensing and depositing at least a continuous filament of said graphene oxide gel onto a supporting substrate, wherein said dispensing and depositing procedure includes mechanical stress-induced molecular alignment of said living graphene oxide molecules along a filament axis direction; (c) partially or completely removing said fluid medium from said continuous filament to form a continuous graphene oxide fiber, wherein said graphene oxide fiber has an inter-plane spacing d (d) heat treating the continuous graphene oxide fiber to form said continuous graphitic fiber at a heat treatment temperature higher than 100° C. to an extent that an inter-plane spacing d Regime 1: 100° C.-600° C. or the thermal reduction regime; Regime 2: 600° C.-1,250° C. or the chemical linking regime; Regime 3: 1,250° C.-2,000° C. or the ordering and re-graphitization regime; and Regime 4: 2,000° C.-3,000° C., or the re-crystallization and perfection regime.