Intercalation of VOPO4·2H2O with lithium ions
Abstract Intercalation compound Li x VOPO 4 ·2H 2 O ( x =0.4−1.0) was prepared by redox intercalation of VOPO 4 ·2H 2 O with lithium iodide in acetone solution. Kinetics of the reaction at 20 and 40°C, X-ray diffraction and ac conductivity of prepared compounds were studied. Four stages denoted as 3, 2, 3 2 , 1 were found in Li x VOPO 4 ·2H 2 O. The conductivity decreases with increasing content of lithium in Li x VOPO 4 ·2H 2 O. This phenomenon is discussed regarding protons as charge carriers.