▎ 摘　　要

NOVELTY - A positive electrode lead paste comprises 75-85 pts. Wt. lead powder, 5-10 pts. wt. red lead, 0.5-1 pt. wt. calcium phosphate, 5-10 pts. wt. dilute sulfuric acid, 0.2-0.3 pt. wt. graphene oxide, 0.5-1.5 pts. wt. ethylenediaminetetraacetic acid disodium salt and 5-10 pts. wt. deionized water. USE - Positive electrode lead paste for lead-acid battery. ADVANTAGE - The positive electrode lead paste improves the capability of the battery during usage, also overcomes the softening of battery pole plate and produces batteries with improved service life. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of positive electrode lead paste, which involves mixing graphene oxide, calcium phosphate and ethylenediaminetetraacetic acid disodium salt in deionized water, stirring for 2 minutes, adding lead powder and red lead to the mixture, adding dilute sulfuric acid slowly and continuously, stirring for 8-10 minutes and cooling to room temperature.