▎ 摘　　要

NOVELTY - Preparing nano-carbon material composite resin hard carbon electrode material comprises: (i) mixing phenolic substance-A with formaldehyde aqueous solution-B to obtain phenolic mixed solution; (ii) adding and mixing dispersing aqueous solution-C of nano-carbon material in phenolic mixed solution to obtain uniformly dispersed mixed solution-D; (iii) adding alkaline catalyst aqueous solution-E to mixed solution-D to obtain reaction solution-F; (iv) heating reaction liquid-F to obtain composite phenolic resin hydrogel-G; (v) washing composite phenolic resin hydrogel-G with de-ionized water, and freeze-drying to obtain composite phenolic resin aerogel-H; (vi) crushing composite phenolic resin aerogel-H to obtain micron-sized particles, and performing low-temperature carbonization to obtain composite resin carbon aerogel-I; (vii) heating composite resin carbon aerogel-I to obtain composite resin hard carbon material-J; and (viii) mixing composite resin hard carbon material-J and PTFE. USE - The method is useful for preparing nano-carbon material composite resin hard carbon electrode material, which is used as composite electrode of low-temperature supercapacitor (all claimed). ADVANTAGE - The method: utilizes phenolic resin source hard carbon as active material main body; has low production cost; and utilizes aqueous reaction system. The electrode material: is environment-friendly and pollution-free. DETAILED DESCRIPTION - Preparing nano-carbon material composite resin hard carbon electrode material comprises: (i) mixing phenolic substance-A with formaldehyde aqueous solution-B to obtain phenolic mixed solution; (ii) adding and mixing dispersing aqueous solution-C of nano-carbon material in phenolic mixed solution to obtain uniformly dispersed mixed solution-D; (iii) adding alkaline catalyst aqueous solution-E to mixed solution-D to obtain reaction solution-F; (iv) heating reaction liquid-F for 1-24 hours at constant temperature of 65-100 degrees C under vacuum control to obtain composite phenolic resin hydrogel-G; (v) washing composite phenolic resin hydrogel-G with de-ionized water, and freeze-drying to obtain composite phenolic resin aerogel-H; (vi) crushing composite phenolic resin aerogel-H to obtain micron-sized particles, and performing low-temperature carbonization at 350-650 degrees C for 1-6 hours with heating speed of 1-20 degrees C/minute under protection of inert atmosphere to obtain composite resin carbon aerogel-I; (vii) heating composite resin carbon aerogel-I at 800-1300 degrees C for 1-6 hours with heating speed of 1-20 degrees C/minute under protection of inert atmosphere to obtain composite resin hard carbon material-J; and (viii) uniformly mixing composite resin hard carbon material-J and PTFE according to mass ratio of 95:5. An INDEPENDENT CLAIM is also included for nano-carbon material composite resin hard carbon electrode material, prepared by above method.