939587

Lithium nickel manganese cobalt oxide

lithium-niobate coated NMC622 cathode active material

• Synonym(s): LiNbO₃-coated NMC622, NMC622
• Empirical Formula (Hill Notation): LiNi_0.6Mn_0.2Co_0.2O₂
• CAS Number: 193215-05-3
• Molecular Weight: 96.93
• UNSPSC Code: 26111700

Properties

• grade: battery grade
• Quality Level: 100
• description: application(s): battery manufacturing
• Assay: 99% trace metals basis
• form: powder
• mol wt: 96.93 g/mol
• composition: LiNi_0.6Mn_0.2Co_0.2O₂
• density: 4.8 g/cm³ ((lit.))

Description

General description

Lithium niobate coated NMC622 is a powdered form of lithium nickel manganese cobalt oxide with a stoichiometry of 6:2:2 Ni:Mn:Co and a typical particle size of 4-10 microns. The particles are coated in 5-10 nm amorphous lithium niobate, less than 1 wt.%.

Application

LiNbO₃-coated NMC622 is a high-performance cathode active material specially designed for lithium-ion batteries (LIBs), particularly solid-state and high-voltage batteries. With a balance of 60% nickel for high capacity and 40% manganese and cobalt for structural stability, NMC622 surpasses NMC811 in terms of cycling lifetime and coulombic efficiencies and offers higher capacity than NMC532. The LiNbO₃ coating plays a vital role in enhancing the stability of the cathode material by safeguarding the electrode and electrolyte from undesired reactions. Research suggests that this lithium-niobate coating mitigates reactions between the cathode material and electrolyte, reducing capacity fade over time and impeding the release of metal ions from the NMC cathode. Additionally, the LiNbO₃ “insertion layer” improves rate capability by minimizing the space charge layer barrier at the electrolyte/cathode interface. This advancement translates to superior Li diffusion and reduced electrode polarization.

Features and Benefits

•NMC622: High capacity and long cycle lifetimes
•LiNbO₃ coating: Enhanced protection for cathode and electrolyte, leading to improved coulombic efficiency
•LiNbO₃ insertion layer: Boosts rate capability

Safety Information

• Pictograms: GHS08,GHS07
• Signal Word: Warning
• Hazard Statements: H317,H351
• Precautionary Statements: P202 - P261 - P272 - P280 - P302 + P352 - P308 + P313
• Hazard Classifications: Carc. 2 - Skin Sens. 1
• Storage Class Code: 13 - Non Combustible Solids
• WGK: WGK 3
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable