Sodium bis(oxalato)borate (NaBOB) salt was first synthesized by Zavalij et al. in 2003. It could be used as the electrolyte salt in sodium-ion batteries. A nonflammable and fluorine-free electrolyte based on NaBOB dissolved in TMP disclosed promising results regarding the electrolyte ionic conductivity (5 mS cm–1 at room temperature) and electrochemical performance in sodium-ion full cells[1].
[1] Ronnie Mogensen. “Sodium Bis(oxalato)borate in Trimethyl Phosphate: A Fire-Extinguishing, Fluorine-Free, and Low-Cost Electrolyte for Full-Cell Sodium-Ion Batteries.” ACS Applied Energy Materials (2020).
