Fig. 2: Carbonate electrolysis potential measured in several molten carbonates.
From: A new electrolyte for molten carbonate decarbonization

The electrolytes investigated included pure lithium carbonate or pure lithium carbonate with 1.0 m Li2O, an equal mixture of sodium and barium carbonate, a mixture of 40 wt% strontium carbonate with 60 wt% Li2CO3, or a mixture of the latter with either 0.16 or 1.0 m SrO and are reproducible to 30 mV. Electrolysis Potentials of Li2CO3 with or without Li2O was obtained from our measurements in refs. 2,56, and Na/BaCO3 was obtained from ref. 2. The additional strontium-containing electrolyte electrolysis potentials were measured in this study.