Technical Selection Guide
Why evaluate NaODFB for sodium-ion cells?
Sodium difluoro(oxalato)borate (NaODFB) is an interphase-focused sodium salt for formulations where hard-carbon SEI formation, cathode CEI behavior, gas control, or storage stability are important. It can be screened as a conducting salt or co-salt in carbonate and specialty solvent systems. Its borate and fluorinated functionality make it particularly useful in controlled comparisons with NaPF6.
Why developers evaluate it
- Functional borate chemistry for SEI and CEI studies
- Relevant to hard-carbon first-cycle and gas screening
- Useful as a co-salt in sodium-ion formulation matrices
Development considerations
- Solubility and conductivity depend on the solvent blend
- Loading must be balanced against impedance and first-cycle loss
- Long-term storage stability should be confirmed
How to compare it
Compare NaODFB with NaPF6 and imide salts using identical electrode loading, formation, temperature, and electrolyte quantity. The best result is formulation- and hard-carbon-specific.