Mastering Lithium-Ion CAM Production: Essential Processes and Quality Control
The production of lithium-ion batteries is a sophisticated journey involving numerous intricate steps. From sourcing raw materials to controlling chemical reactions, each stage is crucial for ensuring the battery's performance and reliability.
At the core of lithium-ion battery production are the cathode materials, NCM (Nickel, Cobalt, Manganese), LFP(lithium iron phosphate), sodium, etc., play a vital role in determining battery efficiency. In here, we take example of NMC.
To create high-quality PCAM (Precursor Cathode Active Material) for NCM cathodes, manufacturers follow a precise co-precipitation process. Nickel, cobalt, and manganese hydroxides undergo transformation under controlled pH levels and inert atmospheres. Factors like stirrer speed, ammonia concentration, and pH levels influence particle size and morphology. Removing oxygen through nitrogen purging prevents the formation of unwanted contaminants, enhancing material purity.
The journey to superior cathode materials continues with the calcination process for CAM (Cathode Active Material) formation. CAM results from the reaction between PCAM, lithium hydroxide (or lithium carbonate), and dopants, within a carefully controlled kiln environment. Oxygen concentration in the kiln atmosphere, whether ambient air or pure oxygen, is critical for desired CAM composition and quality.
In order to alleviate the problem of cation mixing, high-nickel NMC material needs to be sintered in an oxygen furnace. The low-nickel NMC material only needs air furnace sintering.
Throughout production, parameters like particle size, shape, and chemical composition are meticulously monitored to ensure consistency and excellence. By prioritizing quality control measures, manufacturers can meet market demands and drive lithium-ion battery technology forward.
The design of furnace should considers the temperature in later zones of the kiln and the corrosion resistance of the kiln chamber according to the NMC design, while the sealing requires a LFP design.
Introducing the HGS Roller Hearth Kiln: Redefining Lithium-Ion Battery Production Our HGS Roller Hearth Kiln offers unparalleled transmission capabilities, accommodating 100-meter roller adjustments with precision. Featuring advanced temperature control within ±5°C, our kilns ensure uniformity with a six-row double-layer roller design (±3°C for single-layer configurations). With a focus on atmospheric integrity, our kilns undergo rigorous inspections for air tightness and employ unique air curtain positions for optimized gas flow. Equipped with advanced simulation and a furnace pressure negative feedback system, our kilns enable precise atmosphere and pressure control, setting new standards in battery manufacturing efficiency and reliability.
HGS (Atmosphere) Roller Hearth Furnace
- 1450°C or Higher Maximum Temperature Rating
- Air/Nitrogen/Hydrogen Capable
- <10PPM O2(LFP) or >98% O2(NMC)
- 1x1 to 6 x 2 Configuration
- 100m RHK available
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