Graphite Layered structure Structure and chemistry: Covalent C atoms have sp2 42pm bond hybridization-one free electron ABAB stacking pattern Van der Waal 。 Interlayer:van der Waals force Intralayer:covalent bonds B cathode charge anode https://www.leiphone.com/news/201512/Pgf3Ds2r0 QZUoZ6X.html a LiCoO2 Graphite discharge 55 • C atoms have sp2 hybridization → one free electron • ABAB stacking pattern • Interlayer: van der Waals • Intralayer: covalent bonds A B A https://www.leiphone.com/news/201512/Pgf3Ds2r0 QZUoZ6X.html Layered structure Covalent bond Van der Waal force Structure and chemistry： charge discharge cathode LiCoO2 Graphite anode Graphite a b c