%0 Journal Article
%K sodium
%K cells
%K elements (inorganic)
%K Na
%K phosphorus, P
%K potentials
%K sulfur, S
%A Paul L Ridgway
%A Frank R McLarnon
%A John S Newman
%B Journal of the Electrochemical Society
%D 1996
%N 2
%P 406-411
%R 10.1002/chin.199626014
%T Sodium/Phosphorus-Sulfur Cells I. Cell Performance
%V 143
%8 02/1996
%! J. Electrochem. Soc.
%X <p>Sodium/β-alumina/phosphorus-sulfur cells utilizing P/S ratios of 0, 0.143, 0.332, and 1.17 at temperatures from 350 to 500°C were studied by measurement of the equilibrium cell voltages at open circuit, and the steady-state cell voltages at current densities up to 70 mA/cm<sup>2</sup>. States of charge, represented by sodium atom fraction in the P-S electrode, ranged from 0 to 0.4. Open-circuit voltages up to 2.65 V were measured. Theoretical specific energies up to 825 Wh/kg were calculated from the open-circuit potential vs. composition data. When phosphorus was added to the sulfur electrode in the P/S ratio 0.143, the cell resistance was two to ten times greater than that with sulfur alone.</p>