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NVP Sodium Vanadium Phosphate Single-Sided Cathode, 30 mg/cm² per side
Single-Sided Cathode Sheet
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The NVP cathode sheet must be handled under strict ISO 9001 conditions to prevent secondary contamination. Surface contamination must be avoided before electrochemical validation to ensure accurate test results.
- Contamination Prevention: The electrode sheet must be processed under ISO 9001 conditions to prevent secondary contamination.
- Surface Handling: Surface contamination must be avoided before electrochemical validation by following precise laboratory protocols.
- Active Mass Determination: Actual weighing of punched electrode wafers must be used to determine active material mass instead of theoretical averages.
- Contact Resistance Mitigation: The carbon-coated aluminum substrate minimizes contact resistance and improves rate capability.
- Dry Process Stability: The solvent-free dry process ensures superior binder distribution and enhanced environmental stability compared to wet-slurry methods.
This procedure outlines the steps to prepare electrode wafers from the NVP cathode sheet and calculate the active material mass. Accurate weighing and calculation are essential for reliable electrochemical testing.
- Identify Coated and Uncoated Sides
Identify the coated front side as dark and matte and the uncoated back side as lighter and metallic. - Punch Electrode Wafers
Punch electrode wafers from the sheet to the desired size for coin cell assembly. - Weigh Total Wafer
Weigh the total wafer weight using an analytical balance. - Calculate Current Collector Weight
Calculate the current collector weight by multiplying the current collector areal density of 4.4 mg/cm² by the wafer area. - Determine Coating Weight
Subtract the current collector weight from the total wafer weight to obtain the coating weight. - Calculate Active Material Weight
Multiply the coating weight by the active material ratio of 94.5% to get the active material weight. - Compute Specific Capacity
Use the active material weight to calculate the specific capacity based on the theoretical capacity of 110 mAh/g.
What are the advantages of the dry process manufacturing for this NVP cathode sheet compared to traditional wet-slurry methods?
The dry process ensures superior binder distribution and enhanced environmental stability, as stated in the product description. This results in a high active material ratio of 94.50% and consistent electrochemical performance in sodium-ion battery research.
What is the role of the carbon-coated aluminum foil substrate in this NVP cathode sheet?
The carbon-coated aluminum foil substrate is used to minimize contact resistance and improve rate capability, according to the technical specifications. This is critical for high-loading (30 mg/cm²) studies where interfacial resistance can limit performance.
How can researchers distinguish the coated side from the uncoated side of the NVP cathode sheet?
The front side (coated) appears dark and matte, while the back side (uncoated) appears lighter and metallic under natural or soft artificial light, as described in the user guidelines. Proper identification is essential to avoid assembly errors in coin cells or pouch cells.
Atomfair NVP cathode sheet with 30 mg/cm² areal density, dry-process coating, and 94.5% active material ratio is optimized for high-loading sodium-ion battery research, providing a consistent baseline for electrolyte and kinetic studies.
Positive
- High active material ratio and dry process: 94.5% active material ratio with solvent-free dry coating ensures superior binder distribution and enhanced environmental stability compared to wet-slurry methods.
- Carbon-coated aluminum substrate: Carbon-coated aluminum foil minimizes contact resistance and improves rate capability, as explicitly stated in the product description.
Trade-offs
- Single-sided coating constraint: Coating is applied to one side only, limiting direct use in full-cell assemblies that require double-sided electrodes; typical configuration is half-cell or symmetrical cell.
- Surface contamination sensitivity: The dry-process NVP coating is susceptible to contamination from ambient moisture or handling, requiring strict laboratory protocols to preserve material integrity per the product disclaimer.
Every advanced material, component, equipment, and instrument in our catalog is backed by rigorous testing. We maintain strict internal quality management frameworks and align with CE conformity metrics to deliver transparent, reproducible performance data via our public open-science repository.
To request raw batch performance data, submit formal vendor registration paperwork, or execute a fast-turnaround R&D manufacturing loop, contact us at inquiry@atomfair.com.
Item is dispatched under the Atomfair Shipping & Delivery Framework (Free worldwide shipping on orders over $59 USD excl. heavy equipment). Return is governed by the Atomfair Return & Refund Policy (7-day technical return window).
