▎ 摘　　要

NOVELTY - Preparation of cathode material involves adding 75 mg graphene oxide to 100 ml 40 %mass nitric acid solution, ultrasonically oscillating for 20 minutes, heating and boiling to 125-130 degrees C for refluxing for 10-20 hours, removing the product, washing to neutral, filtering to obtain acid graphene oxide, adding 15 ml sodium citrate solution into 100 ml chloroauric acid solution, heating and boiling for 30 minutes to obtain the gold sol solution, taking 75 mg acid graphene oxide, adding 100-300 mL water to obtain acid graphene oxide dispersion liquid, dripping the gold sol solution, vibrating and depositing for 7-8 minutes to obtain the gold-doped graphene oxide, taking 1.5-5 g silica sol and 5 g glycine dissolved in deionized water to obtain silicon dioxide/glycine solution, adding gold-doped graphene oxide to the obtained solution, ultrasonically processing, naturally cooling to room temperature, washing with distilled water and ethanol, drying, calcining and cooling. USE - Preparation of cathode material for lithium battery. ADVANTAGE - The method produces cathode material having improved conductivity due to the unique structure and the hybrid structure of the conductive carbon support. The lithium battery with improved electrochemical performance is provided using the cathode material. DETAILED DESCRIPTION - Preparation of cathode material involves adding 75 mg graphene oxide to 100 ml 40 %mass nitric acid solution, ultrasonically oscillating for 20 minutes, heating and boiling to 125-130 degrees C for refluxing for 10-20 hours, removing the product, washing to neutral, filtering to obtain acid graphene oxide, adding 15 ml sodium citrate solution into 100 ml chloroauric acid solution, heating and boiling for 30 minutes to obtain the gold sol solution, taking 75 mg acid graphene oxide, adding 100-300 mL water to obtain acid graphene oxide dispersion liquid, dripping the gold sol solution, vibrating and depositing for 7-8 minutes to obtain the gold-doped graphene oxide, taking 1.5-5 g silica sol and 5 g glycine dissolved in deionized water to obtain silicon dioxide/glycine solution, adding gold-doped graphene oxide to the obtained solution, ultrasonically processing for 3 hours at 700-800W, transferring to the high pressure kettle, maintaining for 12 hours at 190 degrees C, naturally cooling to room temperature, using distilled water and ethanol to wash 3-5 times, drying at 60 degrees C, taking out and putting into a tubular furnace under protection of nitrogen, raising the temperature to 700-750 degrees C, calcining for 2 hours at a rate of 5 degrees C/minute, and naturally cooling.