Ionic diffusion and conductivity in Li2CuO2 and LiCuO2 were studied by means of complex impedance measurements. The conductivity of both samples was largely enhanced with increasing temperature, and attained 0.01 to 0.1S/m at about 450K. X-ray diffraction measurements showed that a small amount of CuO phase appeared with increasing temperature in both samples. High electric conduction was attributed to a complicated mechanism involving ionic and hole conduction.

Li+ Ionic Diffusion in Li–Cu–O Compounds. K.Nakamura, K.Kawai, K.Yamada, Y.Michihiro, T.Moriga, I.Nakabayashi, T.Kanashiro: Solid State Ionics, 2006, 177[26-32], 2775-8