▎ 摘　　要

NOVELTY - Alternating multilayer graphene and rod-shaped iron oxide composite material comprises rod-shaped iron oxide and 2-10 graphene layers. Rod-shaped iron oxide is evenly loaded on graphene sheet. Rod-shaped iron oxide has 100-300 nm length and 13-30 nm diameter. Composite material iron oxide content is 60-90 wt.%. USE - Alternating multilayer graphene and rod-shaped iron oxide composite material. ADVANTAGE - The preparation method is simple. The composite material has unique structure, high specific capacity and improved cycle performance and electrochemical performance. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for synthesizing alternating multilayer graphene and rod-shaped iron oxide composite material comprising dissolving graphene nanopowder in deionized water, ultrasonic processing, adding water-soluble ferrous salt and sodium acetate, stirring, feeding to PTFE hydrothermal reactor, performing low temperature hydrothermal reactions for 8-12 hours, adjusting reaction temperature, reacting for 12-24 hours, centrifuging, alcohol washing, rinsing, and drying.