▎ 摘　　要

NOVELTY - The material has an electrode material i.e. nanometer fiber, comprising nano-graphene and nano-transition metal oxide i.e. titanium oxide or copper dioxide or tin oxide or magnesium oxide. Mass ratio of nano-graphene and nano-transition metal oxide is in the range of O.01-1:10. A space structure is formed between fiber and metal oxide. USE - Metal oxide nanometer fiber electrode material for a lithium ion battery. ADVANTAGE - The material releases volume expansion or contraction of electrode film in an effective manner, thus reducing irreversible capacity loss and improving capacity of lithium ion battery and cycle stability. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a metal oxide nanometer fiber electrode material preparation method. DESCRIPTION OF DRAWING(S) - The drawing shows a graph of electro-spinning graphene composite X-ray diffraction pattern for lithium ion battery.