Ronbay S85E Polycrystalline NCM811 Cathode Material 1kg
SKU: S85E
$498.00
Ronbay S85E Polycrystalline NCM811 Cathode — polycrystalline NCM811 with Ni/Co/Mn 49.15/6.85/2.85 wt%, D50 10.31 μm, tap density 2.40 g/cm³, S.S.A 0.50 m²/g.
Half-cell testing at 0.2C, 4.25–2.5 V delivers 205 mAh/g specific capacity with 90.5% first-cycle efficiency.
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Name: Ronbay S85E Polycrystalline NCM811 Cathode
Material Type: Polycrystalline Lithium Nickel Cobalt Manganese Oxide NCM811
Product Code: S85E
Brand: Ronbay
Product Introduction:
The Ronbay S85E is a polycrystalline NCM811 cathode material with Ni / Co / Mn 49.15 / 6.85 / 2.85 wt%. The material is supplied as a black powder with D50 10.31 μm, tap density 2.40 g/cm³, and specific surface area 0.50 m²/g. SEM confirms spherical-type / quasi-spherical secondary-particle morphology, and XRD shows no impurity phase peaks. The S85E is broadly applicable to a wide range of steel-can, aluminum-can, and polymer lithium-ion battery products.
Key Features:
Polycrystalline NCM811 chemistry — Ni/Co/Mn 49.15/6.85/2.85 wt%
0.2C specific capacity 205 mAh/g at 4.25–2.5 V (half cell)
First-cycle efficiency 90.5%
High tap density 2.40 g/cm³ supports high electrode loading
Particle size distribution — D10 6.04 μm / D50 10.31 μm / D90 18.14 μm
Specific surface area 0.50 m²/g
Low moisture content 218 ppm
Low free lithium 1238 ppm (≤ 2000 ppm spec)
Low impurity content — Fe 14 ppm, Cu 7 ppm, Na 78 ppm, Ca 55 ppm, Mg 20 ppm
Low magnetic impurities (Fe+Cr+Zn) 15 ppb
Spherical-type / quasi-spherical secondary-particle morphology (by SEM)
XRD confirms phase purity with no impurity phase peaks
RoHS compliant (EU standards)
Chemical Composition:
| Element | Specification | Typical Value |
|---|---|---|
| Li (wt%) | 7.40 ± 0.20 | 7.40 |
| Ni (wt%) | 49.00 ± 1.50 | 49.15 |
| Co (wt%) | 6.80 ± 0.60 | 6.85 |
| Mn (wt%) | 2.80 ± 0.60 | 2.85 |
Impurities & pH:
| Item | Specification | Typical Value |
|---|---|---|
| Fe (ppm) | ≤ 50 | 14 |
| Cu (ppm) | ≤ 50 | 7 |
| Na (ppm) | ≤ 500 | 78 |
| Ca (ppm) | ≤ 200 | 55 |
| Mg (ppm) | ≤ 200 | 20 |
| Free Li⁺ (ppm) | ≤ 2000 | 1238 |
| Magnetic Impurities Fe+Cr+Zn (ppb) | ≤ 50 | 15 |
| H₂O (ppm) | ≤ 400 | 218 |
| pH | 11.60 ± 0.20 | 11.65 |
Particle Size Distribution (PSD):
| Parameter | Specification | Typical Value |
|---|---|---|
| D10 (μm) | ≥ 5.00 | 6.04 |
| D50 (μm) | 10.00 ± 2.00 | 10.31 |
| D90 (μm) | ≤ 25.00 | 18.14 |
Particle size distribution curve:
Physical Properties:
| Property | Specification | Typical Value |
|---|---|---|
| Appearance | Black powder | Black powder |
| Apparent Density (g/cm³) | ≥ 1.20 | 1.60 |
| Tap Density (g/cm³) | ≥ 2.10 | 2.40 |
| Specific Surface Area (m²/g) | 0.50 ± 0.20 | 0.50 |
| Particle Morphology | Spherical-type / Quasi-spherical | — |
| Crystal Structure | No impurity phase peak | — |
| RoHS | EU standards compliant | — |
SEM Morphology:
SEM imaging confirms spherical-type / quasi-spherical secondary-particle morphology composed of densely packed primary particles, characteristic of polycrystalline NCM811.
SEM at low magnification:
SEM at high magnification:
XRD Pattern:
Electrochemical Performance (Half-Cell, 0.2C Charge, 4.25–2.5 V):
| Parameter | Specification | Typical Value |
|---|---|---|
| Specific Capacity (mAh/g) | ≥ 202.0 | 205 |
| First-Cycle Efficiency (%) | ≥ 88.0 | 90.5 |
Values measured by Xnergy. Typical values for reference; not guaranteed unless otherwise specified.
Application Areas:
The Ronbay S85E is broadly applicable to a wide range of steel-can, aluminum-can, and polymer lithium-ion battery products.
Packaging:
Vacuum-sealed in aluminum-laminated film bag, placed in plastic drums or cardboard boxes. Each drum / box contains 25.00 kg ± 0.02 kg net weight of material, or customized per customer requirements.
Shelf Life:
Under vacuum-sealed packaging, store in a cool, dry place. Shelf life: 1 year.
Handling, Storage & Protection:
Avoid impact and inversion during handling. Store in a clean environment at room temperature, cool and dry. Avoid sunlight, heat, and rain during transportation. Use the material immediately after opening the packaging bag; if not used immediately, reseal and store to prevent moisture absorption.
Note: Specifications listed above are typical and for reference only. Actual electrochemical performance depends on the specific cell architecture, electrolyte formulation, binder/conductive-additive composition, coating thickness, calendering parameters, formation protocol, and testing conditions. For complete lithium-ion battery electrode preparation workflows, see also Xnergy’s related products in the Cathode Materials category, Anode Materials category, Binders category, and Current Collectors category. For electrode-coating equipment, see the Coating equipment category including Automatic Film Coater XN-VC-300, XN-VCH-300, and Slot-Die Coating System XN-SDC. For electrode calendering, see the Calendering equipment category. For mixing and drying, see Planetary Vacuum Mixer and Three-Door Vacuum Drying Oven (XN-DVO-3). For the single-crystal NCM811 counterpart, see also Ronbay S8303 Single-Crystal NCM811 Cathode. For other Ronbay NCM cathodes, see Ronbay S760 Polycrystalline NCM613 Cathode, Ronbay S740B Single-Crystal NCM Cathode, Ronbay SC60 Single-Crystal NCM Cathode, and Ronbay SC92Y Single-Crystal Ni91 NCM Cathode. For polycrystalline NCM from BTR, see BTR M9-FC Polycrystalline NCM Cathode.
