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The structure and electric properties of the mixed conductors of Li_(1+x)V_3O_8(x=0.1) containing dispersed second-phase α-Al_2O_3 particles have been studied in the paper. The total conductivity of the specimen containing 6m/o α-Al_2O_3 is five or six times as much as that of pure Li_(1+x)V_3O_8 (x=0.1) at room temperature. By the analyses of NMR and ESR, it is known that at low temperature, the transport activation energy of Li~+ ions reduced, the transport frequency of Li~+ ions are speeded up and thus ionic conductivity increased in the specimens containing α-Al_2O_3 particles. At high temperature, diffusion effect of α-Al_2O_3 on electronic transport becomes great, the enhancement of ionic conductivity caused by α-Al_2O_3 doesn’t make up the decrease of electronic conductivity caused by the diffusion effect, so that total conductivity of the specimens containing DSPP is lower than that of pure Li_(1+x)V_3O_8(x=0.1). As a result, DSPP mainly increases ionic conductivity of the mixed conductors at room temperature.
The total conductivity of the specimen containing 6m / o α-Al_2O_3 particles containing dispersed second-phase α-Al_2O_3 particles has been studied in the paper. The total conductivity of the specimen containing 6m / o α- It is known that at low temperature, the transport activation energy of Li (1 + x) V_3O_8 (x = 0.1) at room temperature. By the analysis of NMR and ESR, it is known that at low temperature, the transport activation energy of Li ~ + ions reduced, the transport frequency of Li ~ + ions are speeded up and thus ionic conductivity increased in the specimens containing α-Al_2O_3 particles. At high temperature, diffusion effect of α-Al_2O_3 on electronic transport becomes great, the enhancement of ionic conductivity caused by α-Al_2O_3 does not make up the decrease of electronic conductivity caused by the diffusion effect, so that the total conductivity of the specimens containing DSPP is lower than that of pure Li_ (1 + x) V_3O_8 (x = 0.1). As a result, DSPP primarily increases ionic conductivity of the mixed conductors at room temperature.