Description
ATOMFAIR® 212 mAh/g NCM90 Ultra-High Nickel PowderRESEARCH GRADE | 90MOL% SUPREME HIGH-NICKEL CATHODE
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
ATOMFAIR® 212 mAh/g NCM90 Ultra-High Nickel Powder – Handling
ATOMFAIR® 212 mAh/g NCM90 is a high-nickel lithium-ion cathode powder with 90.15 ± 0.6 mol% nickel content and a typical 0.2C discharge capacity of 212.45 mAh/g. The material exhibits a first cycle coulombic efficiency of ≥88.0% and residual surface alkali content ≤0.20%.
- 0.2C Discharge Specific Capacity: The material provides a typical discharge capacity of 212.45 mAh/g with a guaranteed minimum of 211.0 mAh/g at 0.2C rate.
- First Cycle Coulombic Efficiency: The first cycle coulombic efficiency is typically 88.3% with a minimum of 88.0%.
- Nickel Content Fraction: Nickel content is 90.15 ± 0.6 mol% with a typical value of 90.14%.
- Residual Surface Alkali: Total monomer surface alkali (Li+) is ≤0.20% with a typical value of 0.12%.
How does the 90 mol% nickel content in NCM90 affect surface alkali levels and what are the maximum allowable limits?
The ultra-high nickel composition (90.15 ± 0.6 mol% Ni) elevates surface reactivity, so the material is tightly controlled to a total monomer surface alkali (Li+) of ≤ 0.20% (typical 0.12%) and residual Li2CO3 ≤ 3500 ppm with LiOH ≤ 4500 ppm. These limits ensure the powder maintains acceptable slurry stability and minimal side reactions during electrolyte validation testing.
What are the particle size distribution constraints for this NCM90 powder in electrode slurry processing?
The powder has a D50 of 10.0 ± 1.5 μm (typical 10.02 μm) with D10 ≥ 2.0 μm (3.02) and D90 ≤ 18.0 μm (16.65), and a Dmin ≥ 0.8 μm (1.01) and Dmax ≤ 26.0 μm (24.08). These tight boundaries are critical for achieving uniform coating thickness and preventing agglomerate-induced defects in high-energy electrode fabrication.
What moisture control measures are required when handling and storing NCM90 ultra-high nickel powder?
The material’s Karl Fischer moisture level is specified at ≤ 250 ppm (typical 88 ppm), indicating extreme sensitivity to ambient humidity. Storage and handling must be conducted in a dry room or glovebox with active desiccation to prevent LiOH and Li2CO3 formation on particle surfaces, which would compromise electrochemical performance.
This NCM90 cathode material delivers industry-leading specific capacity of 212.45 mAh/g with exceptionally low magnetic inclusions, making it suitable for high-energy lithium-ion cells. However, its high surface alkalinity and residual lithium impurities demand stringent dry-room handling and careful electrolyte compatibility assessment.
Positive
- Ultra-high specific capacity: Delivers a typical 0.2C discharge capacity of 212.45 mAh/g, meeting premium automotive thresholds for high-energy lithium-ion cell design.
- Extremely low magnetic inclusions: Total magnetic inclusions are ≤40 ppb (typical 25 ppb), minimizing ferrous contamination risks during electrode fabrication and cell assembly.
Trade-offs
- High surface alkalinity: The powder exhibits pH up to 12.0 (typical 11.69), requiring moisture-controlled processing environments to prevent alkali-induced slurry degradation and electrode cohesion issues.
- Residual lithium impurities: Contains up to 3500 ppm Li2CO3 and 4500 ppm LiOH, which can evolve CO2 or react with electrolyte components, potentially causing gas generation in full cells under extended cycling.
