▎ 摘　　要

NOVELTY - A graphene oxide-modified polyurethane-cellulose separator comprises 75-99 %mass cellulose, 5-25 %mass 6-methylene diisocyanate and 0.3-5 %mass graphene oxide. USE - Graphene oxide-modified polyurethane-cellulose separator used for lithium battery. ADVANTAGE - The separator is economical, biodegradable, has excellent heat resistance, chemical solvent resistance and mechanical properties. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of the separator.