▎ 摘　　要

NOVELTY - A lead-acid cell cathode lead-paste comprises 3000 pts. wt. lead powder, 2-5 pts. wt. fiber, 450-600 pts. wt. graphene aqueous dispersion liquid, 10-20 pts. wt. acetylene black, 20-25 pts. wt. barium sulfate, 250-300 pts. wt. sulfuric acid, and water that makes the apparent density of the lead paste to be 4 plus minus 0.5 g/cm3, where the fiber is polyester fiber and the graphene aqueous dispersion liquid is formed by mixing hydrophilic-treated graphene and water in a weight ratio of 9-15:1000 and performing ultrasonic dispersion. USE - Lead-acid cell cathode lead-paste. ADVANTAGE - The paste can improve conductive capability of the negative plate, improve charging receptivity of the negative plate, increase the specific energy of the lead-acid cell, and make the discharge capacity to be substantially higher than that of a lead-acid cell added with carbon nanotubes. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a method for preparing a lead-acid cell cathode lead-paste, which involves uniformly mixing lead powder, fiber, acetylene black and barium sulfate, adding the dispersed graphene dispersion liquid to a paste mixing machine, and adding sulfuric acid and mixing uniformly to obtain the finished product.