Structural Effect of Conductive Carbons on the Adhesion and Electrochemical Behavior of NMC-442 Cathode for Lithium Ion Battery

The adhesion strength as well as the electrochemical properties of LiNi 0.4 Mn 0.4 Co 0.2 O 2 electrodes containing fiber-like carbon; vapor grown carbon fiber (VGCF), carbon nanotube (CNT) and particle-like carbon; super P (SP), ketjen black (KB) were compared. The morphological properties revealing the interaction between the different conductive carbons (CCs) and the active material was investigated using scanning electron microscope. The adhesion strength between the aluminum current collector and the composite film (A C/Al ), and the adhesion strength between the active material and the CCs (A mid ) of the electrodes were measured using surface and interfacial cutting analysis system (SAICAS). The results obtained from the measured adhesion strength points to the fact that, the structure and the particle size of conductive additives have tremendous influence on the binding property of the composite electrodes and this in turn affects the electrochemical property of the configured electrodes.