The advantages of graphite powder in positive electrode materials are mainly reflected in the following aspects:

High electrical conductivity: graphite powder has excellent electrical conductivity, which can effectively improve the electrical conductivity of the positive electrode material, thereby improving the overall performance of the battery. 

Good cycle performance: graphite powder has high electrochemical stability, can provide a long cycle life, extend the life of the battery.

High energy density: graphite powder, as a positive electrode material, has a high energy density, which can improve the energy storage capacity of the battery and extend the use time.

Strong regulability: the particle size and surface properties of graphite powder can be adjusted by regulating the synthesis conditions, so as to optimize the properties of the positive electrode material.

According to different battery types (such as lithium-ion batteries, lead-acid batteries, etc.) and different capacity and use of batteries, the use of graphite powder will vary. 

For example, according to market research institute data, the global lithium-ion battery market in 2020 sales of more than 270 gigawatt hours (GWh), and the use of graphite powder in lithium-ion battery cathode material is about 10-15%. Therefore, the global lithium-ion battery market needs about 27,000-400,000 tons of graphite powder per year.

The proportion and yield of graphite powder in the anode material usually depends on the battery type and performance requirements. In lithium-ion batteries, graphite powder is one of the main negative electrode materials.
In general, the proportion of graphite powder in the anode material is usually between 70% and 90%, and the remaining components may include enhancers, conductors and binders. These ratios can be adjusted according to battery performance and application needs.