▎ 摘　　要

NOVELTY - An aqueous based electric conductive ink comprises 50-90 pts. wt. aqueous solvent, 1-40 pts. wt. aqueous polymer emulsion, 0.1-1 pts. wt. aqueous dispersing agent and 1-40 pts. wt. graphene. USE - Aqueous based electric conductive ink for lithium ion battery (claimed). ADVANTAGE - The aqueous based electric conductive ink can be prepared with excellent conductivity, low energy consumption and low temperature consumption in simple, cost-effective, eco-friendly and convenient manner. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a method for preparing an aqueous based electric conductive ink, which involves adding graphene to functional solvent according to mass ratio of 1:10-100, mixing under stirring for 1-5 minutes at room temperature, putting into microwave oven for 1-20 minutes and filtering to obtain surface functionalized graphene, adding functionalized graphene, aqueous solvent, aqueous polymer emulsion and aqueous dispersing agent to mixer and stirring for 1-6 hours, thoroughly mixing into a slurry, dispersing obtained slurry by using a sand mill for 1-4 times of grinding and filtering by using 200 mesh filter to obtain an aqueous based electric conductive ink.