Optimized NMC622 electrodes with a high content of the active material: A comprehensive study

• DOI: 10.1016/j.jpowsour.2024.234549
• Publication Date: 2024-05-04T17:41:30Z
• Authors: Sara Hamed; Filipp Obrezkov; Simo Huotari; Mattia Colalongo; Seyedabolfazl Mou...; Tanja Kallio
• Keywords: Content (measure theory)

The composition of lithium-ion battery positive electrodes, incorporating an active material, conductive carbon additives, and a binder, fundamentally influences the electrode physical electrochemical characteristics. In this study, properties electrodes with high amount material (LiNi0.6Mn0.2Co0.2O2 98 wt-%), were tested different ratios nanotubes (CNTs) black (CB) along varying amounts PVDF binder. Consequently, rate capability improves increase CNTs up to 30 wt-% in total share increasing binder 1 wt-%, attributed optimal balance inactive amount. is determined be NMC622, PVDF, carbons, out which CNT shares accounting for wt-%. Furthermore, study continues by comparing reference (CNT-free) assess impact on performance. With present, attains higher energy density specific capacity owing uniform network. Operando XRD dilatometry experiments also reveal that reduce irreversible height change during cycling minimize anisotropic lattice changes, thus enhancing retention.