Abstract: The electric property and magnetic resonance of mixed conductors Li_1+xV₃O₈ (x=0.1) containing DSPP were studied. By AC measurement, the maximum of total conductivity for sample containing about 6 mol% α-Al₂O₃ was four or six times to that of pure Li_1+xV₃O₈ (x=0.1) at room temperature.
That the addition of DSPP increases the electron density of the sample and electronic and ionic transport frequencies, decreases Li⁺ ionic transport activation energies i e., increases total conductivity of the sample was proved by ESR and NMR qualitative and quantitative analysis of the samples.
The increment of the total conductivity mainly depends on the contribution of the Li⁺ ionic conductivity, the electronic conductivity has a definite influence on it, too.

Key words: DSPP, Mixed Conductor, Total Conductivity, Magnetic Resonance