Coulombic efficiency is a target value that represents the difficulty of coating growth. There are two ways to express it: the weight of the deposited coating that consumes 1 coulomb of electricity, measured in milligrams per coulomb, also known as electrical efficiency.
The coulombic number of electricity required to deposit 1 gram of solid paint film, measured in coulombs per gram. The higher the Coulombic efficiency of the coating, the less electricity is required to deposit a certain quality of paint film. Coulombic efficiency is one of the important construction properties of electrophoretic coatings.