▎ 摘　　要

NOVELTY - Application of aryl-containing polyhydroxy polymer having structural unit (I), (II), (III), (IV) and or (V), as conductive additive, is claimed. USE - Application of aryl-containing polyhydroxy polymer as conductive additive in conductive paste for electrode slurry for preparing active material layer in electrode sheet of lithium-ion battery used in electricity storage application (all claimed). ADVANTAGE - The aryl-containing polyhydroxy polymer improves dispersion effect of the conductive material in conductive paste, and provides electrode slurry with high solid content and excellent stability, using reduced usage amount of solvent, by energy-saving and environmentally-friendly process. When the conductive paste is applied to the electrode, the active material layer is not easy to fall off, the internal resistance of active material layer is reduced, and the electrical performance of electrode sheet is improved. DETAILED DESCRIPTION - Application of aryl-containing polyhydroxy polymer having structural unit of formula (I), (II), (III), (IV) and (V), as conductive additive, is claimed. R1-R6 = H or 1-8C alkyl; a,b,c,d = 0 or more;R19 = optionally substituted by one or more Rc;Rc = 1-12C alkyl; and e = more than 0. a and c are not 0 simultaneously. INDEPENDENT CLAIMS are included for the following: 1. conductive paste, which comprises a conductive material and the conductive additive comprising aryl group-containing polyhydroxy polymer; and 2. preparation of the conductive paste, which involves mixing conductive additive, conductive material and solvent and grinding.