What is the Eo for the Zebra cell and are

The “Zebra” cell was invented in 1985 in South Africa as part of the “ZEolite Battery Research Africa” project and is used in all-electric municipal buses and other vehicles. It uses nickel and molten sodium as its electrodes. Its overall cell reaction isNiCl2(l) 2Na(l) <--> Ni(s) 2NaCl(l)What is the Eo for the Zebra cell and are the reactants in this battery at room temperature when it is operating? Explain how you know.