▎ 摘　　要

NOVELTY - A carbon lead battery cathode preparing method involves mixing an ethanol-dispersed graphene oxide with lead nitrate solution and stirring, after adding ammonia solution, gradually increasing the temperature under high temperature and pyrolyzing and incubating under an inert gas atmosphere, after washing with hydrochloric acid, pickling and drying to obtain lead oxide/graphene oxide complex, grinding and mixing an acetylene black, a lignin additive, a short fiber, a barium sulfate, a humic acid and lead oxide/graphene oxide complex with lead powder, adding deionized water to continuous stirring, and adding sulfuric acid for three portions under stirring to obtain lead paste, coating the lead paste on a lead-tin-calcium grid, and immersing in sulfuric acid solution, solidifying and drying at constant temperature and humidity to obtain a green negative electrode plate, and placing the raw negative electrode plate in a sulfuric acid electrolyte to obtain the finished product. USE - Method for preparing carbon lead battery cathode. ADVANTAGE - The method enables preparing carbon lead battery cathode with prolonged cycle life. DETAILED DESCRIPTION - A carbon lead battery cathode preparing method involves mixing an ethanol-dispersed graphene oxide with lead nitrate solution and stirring, after adding ammonia solution, gradually increasing the temperature at 500 degrees C under high temperature and pyrolyzing and incubating for 2 hours under an inert gas atmosphere, after washing with 5M hydrochloric acid, pickling and drying to obtain lead oxide/graphene oxide complex, grinding and mixing an acetylene black, a lignin additive, a short fiber, a barium sulfate, a humic acid and lead oxide/graphene oxide complex with lead powder, adding deionized water to continuous stirring, and adding sulfuric acid for three portions under stirring to obtain lead paste, coating the lead paste on a lead-tin-calcium grid, and immersing in sulfuric acid solution for 1-3 seconds, solidifying and drying at constant temperature and humidity to obtain a green negative electrode plate, and placing the raw negative electrode plate in a sulfuric acid electrolyte to obtain the finished product.