Chomera cha petroleum coke chopangidwa ndi grafiti ndi chinthu chodabwitsa chokhala ndi makhalidwe apadera. Ndi chinthu chochokera mu njira yoyeretsera mafuta yomwe yasinthidwanso kuti ipange mawonekedwe ofanana ndi graphite.
Chida ichi chili ndi mpweya wambiri, zomwe zimapangitsa kuti chizigwira bwino ntchito. Chimagwiritsidwa ntchito kwambiri m'mafakitale osiyanasiyana, makamaka popanga ma electrode a zitofu zamagetsi.