General Discussion IG6, page-185

The amount of graphite concentrate needed to make 1kg of battery anode material for a typical lithium-ion battery for an electric vehicle (EV) can vary depending on the specific battery design and the quality of the graphite used. However, a rough estimate is that it takes about 2-5kg of raw graphite concentrate to produce 1kg of battery anode material.

The graphite concentrate is typically purified and processed to remove impurities and increase its carbon content before it is used to make battery anode material. This purification and processing step can result in some loss of material, which is why it takes more raw graphite concentrate to produce 1kg of battery anode material than the actual amount of anode material itself.

It's important to note that the amount of graphite needed in a lithium-ion battery anode can vary depending on the specific battery design and the desired performance characteristics. Some batteries may use more or less graphite, depending on factors such as energy density, power output, and cycle life.