Shear and Extensional Rheology of PVDF Solutions for Lithium-Ion Battery Coating

Polyvinylidene difluoride solutions in NMP, a key component of lithium-ion battery cathode slurry, were characterized. The dataset includes measurements of steady shear viscosity and extensional rheology for four commercial-grade PVDF systems with different molecular weights and concentrations. Author Qingsong Liu published the data on figshare in May 2026.

Use Cases

• Modeling slot-die coating stability for battery slurries based on extensional rheology data.
• Correlating polymer molecular weight and concentration with shear-thinning behavior based on viscosity measurements.
• Identifying coating process windows for complex fluids based on the mapped rheological properties.
• Selecting material parameters for battery slurry formulation based on the molecular-weight-dependent viscoelasticity data.

Strengths

• Includes data for four distinct PVDF systems, covering three molecular weights and one bidisperse system.
• Contains both shear rheology (steady shear viscosity) and extensional rheology (pinching dynamics, extensional relaxation time) measurements.
• Data is structured in an XLSX file format, facilitating quantitative analysis.

Limitations

• The dataset is small at 16.7 KB, indicating limited scope.
• Row count and specific column definitions are unknown, requiring inspection after download.
• Description metadata is limited; actual data quality requires manual inspection after download.

Provenance

Source

figshare

Collection Method

Data was generated through torsional rheometry and dripping-onto-substrate (DoS) rheometry experiments.

Freshness

Last updated 2026-05-21 09:20:28; freshness should be verified.