▎ 摘　　要

NOVELTY - Gravure printing graphene ink composition (c1), comprises non-oxidized graphene, a hydrophobic fluid component and an ethyl cellulose, where the composition comprises 5-10 wt/vol.% of a graphene-ethyl cellulose solids, and has viscosity of 0.1-10 Pa.second. USE - The graphene ink compositions are useful in the gravure printing and screen printing (all claimed). ADVANTAGE - The compositions: provide flexible electronic components with high-resolution printed graphene circuitry; provide fine patterning of pristine graphene; provide scalable method for the facile and practical printing of highly conductive graphene patterns for flexible and printed electronics; and maintain print morphology, resolution, electrical performance and mechanical properties over repeated substrate bending or folding. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a screen printing graphene ink composition (c2) comprising non-oxidized graphene, a hydrophobic fluid component and an ethyl cellulose, where the composition comprises 10-20 wt/vol.% of a graphene-ethyl cellulose solids, and has a viscosity of 5-100 Pa.second.