A hexagonal close-packed model for graphite particle was developed.The fraction of carbon atoms on the surface and edge was derived in expression of crystallographic parameters and particle size.

• 建立了紧密堆砌的正六棱柱颗粒模型，推导出理想石墨中边缘碳原子及表面碳原子含量与微晶参数、颗粒尺寸之间的关系式。