Sodium-Ion Cathode Electrode Sheets

Sodium-Ion Cathode Chemistry Guide

Cathode family	Typical use case	Selection notes	Representative listing
NVP / Sodium vanadium phosphate	Stable baseline screening, half-cells, electrolyte comparison	Good reference chemistry for repeatable comparisons and lab benchmarking.	NVP Cathode 13 mg/cm² Single-Sided
NFPP / Sodium iron phosphate pyrophosphate	Cost-sensitive development, iron-based studies	Useful for material benchmarking and phosphate-family comparison.	NFPP Single-Side Electrode 12 mg/cm²
NFM111 / Layered oxide	Higher-capacity layered oxide programs, full-cell balancing	Suited to higher energy-density targets and broader layered-oxide exploration.	NFM111 Sodium-Ion Cathode 34 mg/cm²
NFM424 / Layered oxide	Variant-level layered oxide evaluation, format comparison	Useful when the project needs a related layered-oxide option with flexible sheet format.	Sodium NFM424 Cathode Foil 5-Pack
P2-type NMTO	Structural evolution studies, layered-oxide validation	Useful for stability and cycle-behavior work in the P2 family.	P2-Type NMTO Double-Side Sheet 27 mg/cm²
NFS / Sodium iron sulfate	Exploratory route screening, alternative cathode chemistry	Better used as an adjacent chemistry for early-stage investigation and comparison.	Sodium Iron Sulfate Cathode Sheet 230 mm

Selection by Loading, Side, and Process

Low-loading single-sided sheets are the cleanest starting point for half-cell screening, electrolyte and additive comparison, and early-material ranking. They simplify punching, reduce balancing complexity, and make it easier to isolate the effect of the cathode chemistry itself.

Double-sided sheets are more appropriate when the project moves toward pouch-style stacking, higher footprint utilization, or application-relevant energy-density work. In that case, wetting behavior, thickness control, and current-collector compatibility become more important than nominal capacity alone.

Dry-process and high-loading variants are best used when the program is evaluating solvent reduction, densification, or production-relevant electrode architecture. For those studies, it is usually better to define the target loading window and assembly route before selecting a specific sheet.

Custom Service

When standard listings do not match the target cell format, Atomfair’s custom battery electrode coating service can be used to align chemistry, loading, coating side, sheet dimensions, and process integration with the project requirement. This is the right route for non-standard cathode formats, internal qualification work, or development programs that need tighter control over the electrode build.

For custom requests, it is best to define the target capacity window, substrate, coating architecture, and assembly route at the quoting stage. That makes it easier to evaluate whether the request should follow a wet-process path, a dry-process path, or another inquiry-based coating configuration.

Recommended request fields include: cathode chemistry, areal loading, single-sided or double-sided coating, sheet size or punch size, current collector type, tab layout, packaging format, and any drying or handling requirement before assembly.

Application Matrix

Project stage	Recommended sheet type	Why it fits
Half-cell material screening	Single-sided, low to medium loading, chemistry-controlled baseline sheet	Keeps variables tight and makes cross-material comparison cleaner.
Electrolyte or additive comparison	Same chemistry, same loading, same process route	Reduces electrode-driven variance so electrolyte effects are easier to read.
Full-cell validation	Capacity-matched single- or double-sided sheet	Supports N/P balancing and application-relevant cell design.
Pouch prototype work	Double-sided, medium to high loading, size-matched sheet	Better suited to stacked formats and practical footprint utilization.
Dry-process or solvent-reduction study	Dry-process or low-solvent variant	Useful when the project is evaluating electrode densification and process change.
Exploratory chemistry program	NFS, P2-NMTO, NFM424, or custom sheet	Supports early-stage learning when the final chemistry is not yet fixed.

Procurement and R&D Considerations

When selecting a sodium-ion cathode sheet, confirm the actual active-material loading, coating side, sheet dimensions, current collector, batch consistency, and handling requirement before ordering. For full-cell programs, the cathode should also be checked against the anode capacity, target N/P ratio, cutoff voltage window, electrolyte system, separator, and formation protocol.

For higher-loading or double-sided formats, the most important validation points are often electrolyte wetting speed, mechanical integrity, and cycling stability rather than nominal capacity alone. That is especially true when the project is moving from simple screening toward more realistic cell builds.

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