Technical Selection Guide
Why screen LiODFB in lithium-ion electrolytes?
Lithium difluoro(oxalato)borate (LiODFB) is used as a salt or co-salt to tune SEI and CEI formation, particularly in high-voltage, silicon-anode, and storage-stability studies. Its fluorinated borate chemistry makes it useful for comparing interphase formation against LiPF6-only and LiBOB-containing systems. The optimum loading is formulation-specific and should be established through concentration screening.
Why developers evaluate it
- Functional co-salt for SEI and CEI engineering
- Relevant to high-voltage and silicon-containing electrodes
- Useful bridge between fluorinated and oxalate-borate chemistry
Development considerations
- Excess loading can increase impedance or change formation behavior
- Solubility and hydrolytic sensitivity require control
- Benefits must be verified in the intended electrode pair
How to compare it
LiODFB is typically compared with LiBOB, LiPO2F2, and LiPF6-based controls. The useful choice is the one that improves retention or gas behavior without imposing unacceptable first-cycle loss or resistance.