939587

Lithium nickel manganese cobalt oxide

lithium-niobate coated NMC622 cathode active material

• Synonyme(s) : LiNbO₃-coated NMC622, NMC622
• Formule empirique (notation de Hill) : LiNi_0.6Mn_0.2Co_0.2O₂
• Numéro CAS: 193215-05-3
• Poids moléculaire : 96.93
• Code UNSPSC : 26111700

Propriétés

• Qualité: battery grade
• Niveau de qualité: 100
• Description: application(s): battery manufacturing
• Essai: 99% trace metals basis
• Forme: powder
• Poids mol.: 96.93 g/mol
• Composition: LiNi_0.6Mn_0.2Co_0.2O₂
• Densité: 4.8 g/cm³ ((lit.))

Description

Description générale

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.

Caractéristiques et avantages

•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

Informations sur la sécurité

• Pictogrammes: GHS08,GHS07
• Mention d'avertissement: Warning
• Mentions de danger: H317,H351
• Conseils de prudence: P202 - P261 - P272 - P280 - P302 + P352 - P308 + P313
• Classification des risques: Carc. 2 - Skin Sens. 1
• Code de la classe de stockage: 13 - Non Combustible Solids
• Classe de danger pour l'eau (WGK): WGK 3
• Point d'éclair (°F): Not applicable
• Point d'éclair (°C): Not applicable