Polaron conduction in Lix[Ni1/3Mn1/3Co1/3]O2−δ (x=1, 0.9 and δ=0, 0.05) cathodes

摘要: The dc conductivity measured in a wide range of temperature (93–373 K) for the electrode compounds Lix[Ni1/3Mn1/3Co1/3]O2−δ (x=1, 0.9 and δ=0, 0.05) is reported this paper. data have been analyzed framework theoretical models polaronic conduction. analysis shows that low (93–163 are consistent with variable hopping model from fits experimental density localized states at Fermi level different compositions estimated. We explained dependence employing polaron models, proposed by Schnakenberg Emin co-workers, which consider coupling polarons optical acoustic phonon modes. value estimated bandwidth indicates process nonadiabatic nature. parameters obtained reasonable.