▎ 摘　　要

NOVELTY - Preparing graphene coupled spherical nickel-manganese-metal oxide involves oxidizing graphene to obtain graphene oxide (GO), carrying out ultrasonic treatment, and freezing and drying to obtain graphene oxide sponge (GOS). The obtained GOS is mixed with nickel source, manganese source, ammonium fluoride, hexamethylenetetramine and de-ionized water, and then hydrothermal reaction is carried out in high pressure kettle. The solution is neutralized by adding de-ionized water. The solution is frozen and dried in freeze dryer to obtain the graphene coupled spherical nickel-manganese-metal oxide. USE - Method for preparing graphene coupled spherical nickel-manganese-metal oxide used as electrode material (claimed). ADVANTAGE - The method enables to prepare graphene coupled spherical nickel-manganese-metal oxide which is ideal energy material and has good thermal stability, high degree of crystallization and strong shape controllability.