Scalable Advanced Li(Ni_0.8Co_0.1Mn_0.1)O₂ Cathode Materials from a Slug Flow Continuous Process.

Area of Science:

• Materials Science
• Electrochemistry
• Chemical Engineering

Background:

• Lithium-nickel-cobalt-manganese oxide (LNCMO811) is a key cathode material for high-energy-density lithium-ion batteries.
• Current synthesis methods for LNCMO811 are often slow and complex, hindering mass production and commercialization.

Purpose of the Study:

• To develop a scalable and efficient manufacturing process for LNCMO811 hydroxide precursors.
• To demonstrate the effectiveness of a three-phase slug flow reactor for controlled coprecipitation.

Main Methods:

• Utilized a three-phase slug flow reactor for controlled coprecipitation of NCM811 hydroxide precursors.
• Employed an equilibrium model to predict product yield and composition.
• Integrated a ripening step and subsequent calcination with lithium hydroxide to produce the final LNCMO811 cathode material.

Main Results:

• Achieved a homogeneous slurry and a final LNCMO811 product with a tap density of 1.3 g cm⁻³ and a well-layered structure.
• The synthesized LNCMO811 exhibited a high specific capacity of 169.5 mAh g⁻¹ at 0.1C.
• Demonstrated excellent cycling stability with good capacity retention over 1000 cycles.

Conclusions:

• The slug flow reactor system offers a scalable and controlled method for producing high-quality NCM811 precursors.
• This approach facilitates the mass production of advanced cathode materials for next-generation lithium-ion batteries.
• The developed process provides a viable pathway for commercializing high-performance LNCMO811 cathode materials.