Electrode Materials for Batteries and Fuel Cells

Molten oxide Ionic Molten-salt Ionic Aqueous electrolyte Ionic Solid-state ionic conductor Ionic 

Pure molten oxide above materials melting temperature. Note that low conductivity is typical of network-forming oxides such as silica and alumina, while iron oxide and titania exhibit the highest conductance. 

In addition, in primary and rechargeable batteries, apart from the two previous scientific parameters, several technological requirements must be considered when selecting the most appropriate electrode. These requirements are high electrical conductivity, chemical inertness. 

Densities of pure elements from Cardarelli, F. (2001) Materials Handbook. A Concise Desktop Reference. Springer, Berlin Heidelberg New York. 

Densities of inorganic compounds from Lide, D.R. (ed.) (1997-1998) CRC Handbook of Chemistry and Physics, 78th ed. CRC Press, Boca Raton, FL, pp. 4-35 to 4-9. 

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