Electrolytes used for PBAs come in a large variety of different solvent and salt combinations, with multiple viable options reported in the literature . Each electrolyte will have a significant effect on the monitored gassing behaviour . For the moment, the organic carbonates (ethylene, diethylene and propylene carbonate (EC, DEC, and PC respectively) in combination with NaPF6/NaClO4 are the most common . Glycol ethers together with sodium bis(oxalate)borate (NaBOB) are gaining interest due to their uniquely flame retardant, phosphorous free nature and ability to form a stable solid electrolyte interphase (SEI) .