▎ 摘　　要

NOVELTY - Preparation of ferric phosphate/graphene composite involves adding 100 mg graphene to 0.1 mol/l of ferrous nitrate nonahydrate and 0.1 mol/l ammonium phosphate and ultrasonically-dispersing for 30 minutes, then adding 50 ml mixture of Triton X-100 (RTM: nonionic surfactant), butanol and cyclohexane respectively, stirring mixture, adjusting pH of mixture to 2.6 using aqueous ammonia, reacting, aging, centrifuging resulting solution, and washing thrice, drying product at 120 degrees C for 12 hours, and heat-treating at 460 degrees C for 3 hours under nitrogen atmosphere. USE - Preparation of ferric phosphate/graphene composite used for forming electrode of sodium ion battery. ADVANTAGE - The method efficiently and economically provides ferric phosphate/graphene composite with excellent electrochemical property and reversible extraction and insertion rates of sodium ions, and high electroconductivity and surface area, in short period of time. DETAILED DESCRIPTION - Preparation of ferric phosphate/graphene composite involves preparing mixture of Triton X-100 (RTM: nonionic surfactant), butanol and cyclohexane in volume ratio of 3:1:5 as two micro-emulsion systems (A) and (B'), then adding 100 mg graphene to 0.1 mol/l of ferrous nitrate nonahydrate and 0.1 mol/l ammonium phosphate and ultrasonically-dispersing for 30 minutes, then adding 50 ml of emulsion (A) and (B') respectively, stirring mixture using a magnetic stirrer, adjusting pH of mixture to 2.6 using aqueous ammonia, reacting at 45 degrees C for 3 hours at speed of 450 rpm, aging for 3 hours, centrifuging resulting solution, and washing thrice using acetone and ethanol in volume ratio of 1/1, drying product at 120 degrees C for 12 hours, and heat-treating at 460 degrees C for 3 hours under nitrogen atmosphere.