▎ 摘　　要

NOVELTY - A graphene-magnesium composite fiber comprises magnesium layer coated with pure graphene fiber. The magnesium layer has an elongated structure embedded in the folds and the pure graphene fiber has wrinkled surface. USE - Graphene-magnesium composite fiber (claimed). ADVANTAGE - The graphene and magnesium fibers in the composite are closely connected, no holes are found on the external surface and electrical properties are improved. The fiber structure is stable, and has same conductivity after bending 100 times. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of graphene-magnesium composite fiber which involves graphene-oxide fiber, magnesium rod, magnesium sulfate, concentrated sulfuric acid in the process.