What dose are lignins added to li-ion batteries?

Typical doses are around 1 wt% of the amount of carbon included in the electrode slurry.

A more complete answer is that it will depend on the surface area of the carbon that is used, as well as the dose of the binder and thickener, so one needs to perform a few experiments to find out. One can usually achieve Newtonian rheological behavior in an aqueous carbon slurry when the lignosulfonate is added at 1 mg for every square meter of carbon surface area. For example, a slurry containing 10 g of carbon with a surface area of 100 m2/g has 1000 m2 carbon surface area and 1 g of lignosulfonate should be added. As a slurry with Newtonian flow properties is too thin for electrode casting, this dosage provides an upper limit. Progressively lower doses should be pursued until the desired rheological properties are obtained.