Opening Context
Hard carbon anodes remain central to lithium-ion and sodium-ion development because their low-voltage storage behavior directly affects energy density, first-cycle lithium or sodium loss, and full-cell balancing. A reliable half-cell dataset gives researchers a practical baseline before moving to paired-electrode testing.
Why This Dataset Matters
The slide presents hard carbon anode in a sodium metal 2320 coin cell tested at 0.1C/0.1C and 25 +/- 1 deg C. The combination of 8.5 mg/cm2 loading, 0.01-2.5 V voltage range, and the stated electrolyte makes the dataset useful for sodium-ion anode evaluation. 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. HC-S03 charge-discharge performance dataset.
The reported specific capacity is 288.01 mAh/g.
The reported first-cycle efficiency or coulombic efficiency is 91.73%.
The electrode loading is 8.5 mg/cm2.
The voltage profile is technically consistent with the stated hard carbon anode system. For this dataset, The low-voltage sloping profile and high initial efficiency indicate a usable hard carbon response for sodium storage under moderate electrode loading. The Na metal counter electrode and 1 M NaPF6 in DEGDME electrolyte frame the result as a focused material-screening dataset rather than a final full-cell performance claim.
System-Level Interpretation
From an anode-engineering perspective, the dataset supports evaluation of reversible capacity, low-voltage polarization, and initial inventory loss. The result is especially useful for deciding how the hard carbon electrode should be paired with cathodes in later full-cell studies.
Application Outlook
Based on the shown data, the most realistic near-term use is sodium-ion battery anode screening, early cell design, and electrode formulation optimization. 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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