The electrochemical characteristics of VSe2 in lithium cells

Abstract Vanadium diselenide has been found to react in a reversible manner with lithium in electrochemical cells. The rate of reaction was very rapid, comparable with that of titanium disulfide. The partial molar free energy of reaction was found to be almost independent of composition for x ≤ 1 in Li x VSe 2 . A second lithium was incorporated into the lattice but only at cell emf's of around 1.3 volts, 0.7 volts lower than for the first lithium.