Coated particulate cathode active materials: BASFRecent Research Landscape
Interfacial instability at the cathode-electrolyte boundary causes rapid capacity fade and thermal runaway. Engineering protective surface layers and core-shell architectures stabilizes the active material structure to extend cycle life.
What technical problems is BASF addressing in Coated particulate cathode active materials?
Surface degradation during processing
(98)evidences
Direct contact between high-voltage cathode surfaces and electrolyte causes chemical instability and electrolyte decomposition. Mitigating this degradation prevents capacity fade and extends cycle life.
Surface residual alkali degradation
(23)evidences
High-nickel cathode materials suffer from the formation of reactive lithium impurities and unstable phase transitions like gamma-NiOOH. Eliminating these surface species prevents electrolyte decomposition and capacity fading.