Nano sheet porous transition metal oxide/carbon composite material and preparation method thereof

The invention relates to a nano sheet porous transition metal oxide/carbon composite material and a preparation method thereof, belonging to the field of electrochemical materials. The preparation method comprises the following steps: firstly, directly dissolving transition metal salt in glycol in an autoclave, and performing hydrothermal reaction at 100-180 DEG C for 2-5 hours, thereby generating a transition metal coordination polymer precursor; and washing, drying, and then decomposing at 450-600 DEG C in a tubular furnace with inert atmosphere for 0.5-6 hours, thereby obtaining the nano sheet porous transition metal oxide/carbon composite material. The material provided by the invention has the characteristics of high conductivity, high specific capacity, good circulating stability, excellent high-ratio discharge performance and high energy density. The preparation method is simple in process and low in preparation cost, the electrochemical performance of the composite material can be effectively improved, and the composite material has high primary reversible specific capacity and excellent circulating performance and can be applied to a secondary lithium ion battery.