LiAsF6 in propylene carbonate—acetonitrile for primary lithium batteries

1M LiAsF₆ in 50% v/v propylene carbonate—acetonitrile (PC-AN) is an electrolyte solution which offers improved cathode utilization, improved energy efficiency and more stable discharge voltages when used in primary lithium batteries with MnO₂, TiS₂, Cu₂S, CuS, MoO₃, V₂O₅, V₆O₁₃ and NbSe₃ cathodes. Incorporation of solvated Li⁺ into the cathodic material may be part of the cathodic process, and the lower viscosity and lower molar volume of acetonitrile, which is a solvator of Li⁺ in PC/AN mixtures, are thought to be responsible for the major improvement over LiAsF₆ in PC as electrolyte solution for these cells.