NFM Sodium-Ion Cathode Electrode Sheet (NFM-S/D Series)

Name: NFM Sodium-Ion Cathode Electrode Sheet (NFM-S/D Series)

Material Type: O3-Type Layered Nickel Iron Manganese Oxide (Na-NFM) Sodium-Ion Cathode

Product Code: NFM-S01 / S02 / S04 (single-side) / NFM-D01 / D02 / D03 / D04 / D05 (double-side)

Product Introduction:

The NFM-S/D series consists of pre-coated sodium-ion battery cathode electrode sheets based on O3-type layered nickel iron manganese oxide (Na-NFM). The series spans eight grades — three single-side coated (NFM-S01, S02, S04) and five double-side coated (NFM-D01 through D05) — covering area densities from 10 to 58 mg/cm², multiple electrode dimensions, and both wet-process and dry-process electrode fabrication routes. Each electrode is supplied ready for cell assembly with documented loading parameters, supporting R&D, prototyping, and small-batch sodium-ion cell production.

Key Features:

O3-type layered Ni-Fe-Mn oxide (Na-NFM) sodium-ion cathode active material
Eight grades covering single-side and double-side coated configurations
Area densities from 10 to 58 mg/cm²
Both wet-process and dry-process electrodes available within the series
Active material content 95.30 – 96.25% across grades
Pressing density up to 2.99 g/cm³ (double-side)
Multiple electrode dimensions to fit different cell formats
Vacuum-packed for moisture protection during storage and transport
Documented loading parameters provided per grade to support cell-design calculations

Series Specifications:

“Wet process” denotes solvent-based slurry coating; “dry process” denotes solvent-free electrode fabrication. Dry-process grades are typically available at higher area density due to the absence of solvent-drying constraints during coating.

Loading Parameter Calculations:

For accurate cell-design and capacity calculations, use the following definitions and formulas with the parameters supplied per electrode sheet.

Definitions:

Area density (mg/cm²) — total coated mass per unit area, including current collector
Coating area density (mg/cm²) — coated material mass per unit area, excluding current collector
Active material ratio (%) — fraction of active material in the coating
Specific capacity (mAh/g) — capacity per gram of active material

Theoretical formulas:

Theoretical coating area capacity (mAh/cm²) = Coating area density (mg/cm²) × Active material ratio × Specific capacity (mAh/g) ÷ 1000
Theoretical active material mass (mg) = Coating area density (mg/cm²) × Active material ratio × Punched disc area (cm²)

For actual measurement, weigh a punched disc and subtract the current collector contribution:

Actual active material mass (mg) = [Punched disc weight (mg) − Collector area density (mg/cm²) × Disc area (cm²)] × Active material ratio

Because coating area density is supplied with manufacturing tolerance, actual weighed values should be used when calculating specific capacity from measured charge/discharge results.

Identifying Front vs. Back Side (Single-Side Coatings):

For single-side coated grades (NFM-S01, S02, S04), the front (coated) and back (collector) sides can be distinguished after opening the package by examining the sheet against light — the darker side is the coated front; the lighter side is the uncoated back.

Packaging:

NFM sodium-ion cathode electrode sheets are vacuum-packed in moisture-barrier pouches, one sheet per pouch, to protect against humidity during storage and transport.

Application Areas:

NFM-S/D series sheets are suitable for:

Sodium-ion battery cathode research and prototyping
Coin-cell (CR20xx) and pouch-cell assembly with sodium-ion chemistry
Electrochemical characterization of O3-type layered Na-NFM materials
Comparative studies of single-side vs. double-side coating configurations and area-density effects
Comparison of wet-process and dry-process electrode performance at matched chemistry

Storage & Handling:

Store in a cool, dry environment in sealed packaging until use
Open the vacuum pouch only immediately before use
For partially used sheets, reseal in a dry-pouch or transfer to a dry-room / glove-box environment to prevent moisture pickup
Avoid bending, scratching, or contaminating the coated surface

Specifications are provided for reference. Customized area densities, sheet sizes, and quantities are available on request.

Note: Specifications listed above are typical and for reference only. Actual electrochemical performance depends on the cell architecture, electrolyte formulation, separator choice, formation protocol, and testing conditions. The NFM-S/D series is positioned for users who need ready-to-assemble sodium-ion cathode electrodes rather than starting from powder — saving the slurry-mixing, coating, calendering, and slitting steps for R&D groups whose focus is on the cell-level or electrolyte/anode side of sodium-ion development. The series is also one of the few catalogs offering both wet-process and dry-process electrodes at matched Na-NFM chemistry, supporting direct comparison studies of solvent-based vs. solvent-free electrode fabrication. For users preferring to coat from powder using their own process, related sodium-ion cathode active materials are available in our BTR BN-O3 Sodium-Ion NFM Cathode and BTR BN-P2C Sodium-Ion NFM Cathode. Downstream electrode-preparation equipment that can be used to validate or repeat the loading shown here includes the Slot-Die Coating System XN-SDC for slurry coating and the Calendering equipment range for pressing to target electrode density. For broader sodium-ion and lithium-ion cathode materials, see our Cathode Materials catalog.