Z. Naturforsch. 56 b, 697-703 (2001); received April 5, 2001 Multianvil, High-Pressure Synthesis, Borates /3-Ytterbium borate (ö-YbBOi) was synthesized under high-pressure in a Walker-type mul­ tianvil apparatus at 2.2 GPa and 1400 °C. The title-compound crystallizes in the trigonal calcite structure, space group R3c. Single crystal X-ray data yielded a = 492.1(2), c = 1630.5(9) pm, wR2 = 0.034...

Sodium-ion batteries (SIBs) are a promising grid-level storage technology due to the abundance and low cost of sodium. The development new electrolytes for SIBs is imperative since it impacts battery life capacity. Currently, sodium hexafluorophosphate (NaPF6) used as benchmark salt, but highly hygroscopic generates toxic HF. This work describes synthesis series borate salts, with electrochemic...