Opening Context
NFM cathode materials are evaluated not only by peak specific capacity, but also by whether the voltage profile, first-cycle efficiency, and electrode loading remain credible under realistic coin-cell screening conditions. For early R&D, a clean half-cell curve helps researchers separate material behavior from later full-cell balancing effects.
Why This Dataset Matters
The slide presents NFM cathode in sodium metal 2320 coin cells tested at 0.1C/0.1C and 25 +/- 1 deg C. The combination of 10-18 mg/cm2 loading, 2.0-4.0 V, 2.0-4.1 V, and 2.0-4.2 V voltage range, and the stated electrolyte makes the dataset useful for sodium layered oxide voltage-window comparison. The key value is not only the headline capacity, but the way the voltage curve supports the interpretation.
Figure-Based Analysis
The figure below is the source dataset used for this article.
Figure 1. NFM charge-discharge performance dataset.
The reported specific capacity is 123.53-153.26 mAh/g.
The reported first-cycle efficiency or coulombic efficiency is 94.71-96.00%.
The electrode loading is 10-18 mg/cm2.
The voltage profile is technically consistent with the stated NFM cathode system. For this dataset, The data show how the upper cut-off voltage changes accessible capacity while maintaining high first-cycle efficiency in a carbonate electrolyte. The Na metal counter electrode and carbonate-based electrolyte electrolyte frame the result as a focused material-screening dataset rather than a final full-cell performance claim.
System-Level Interpretation
From a cathode-engineering perspective, the dataset suggests that NFM can sustain a usable charge-discharge response under the stated loading and voltage limits. The curve shape also helps identify whether the material is behaving as expected: plateau-dominant systems should show clear voltage features, while layered oxides often show more sloped profiles as sodium or lithium content changes.
Application Outlook
Based on the shown data, the most realistic near-term use is sodium-ion cathode selection, voltage-window tuning, and high-loading electrode validation. Before making final cell-level claims, researchers would normally add repeat-cell statistics, rate capability, longer cycling, impedance growth, electrode density, and full-cell balancing data. Even so, the present curve provides a practical starting point for material selection and electrode-sheet development.
From Materials to Cells
Moving from a single half-cell curve to a working battery requires more than active material capacity. Slurry design, coating uniformity, calendaring density, electrolyte compatibility, separator choice, and pouch-cell format all affect how the same material behaves in a realistic device. That is why material screening, customized electrode sheets, and small-format cell testing should be treated as connected steps in one development workflow.
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