Nickel-Dependent Interfacial Chemistry in Layered Oxide Cathodes: Insights from X-ray Photoelectron Spectroscopy and Electrochemical Quartz Crystal Microbalance

Key Points

• The main aim is to explore how nickel content influences the interfacial chemistry of NMC cathodes in Li-ion batteries.
• Applied X-ray photoelectron spectroscopy to assess chemical states at the cathode interface.
• Used electrochemical quartz crystal microbalance to measure changes in mass and charge dynamics.
• Analyzed the impact of varying nickel content on cathode performance.
• Increased nickel content enhances practical capacity and stability of NMC cathodes.
• Identified specific interfacial reactions dependent on nickel levels.
• Reported improved electrochemical properties linked to nickel influence.