EFFECTS OF DISPERSED SECOND-PHASE PARTICLES ON MIXED CONDUCTORS OF Li1+xV3O8（X=0, 1）
来源期刊：Journal Of Wuhan University Of Technology Materials Science Edition1989年第2期
论文作者：崔万秋 陈文
文章页码：41 - 47
摘 要：<正> The structure and electric properties of the mixed conductors of Li1+xV3O8（x=0.1） containing dispersed second-phase α-Al2O3 particles have been studied in the paper. The total conductivity of the specimen containing 6m/o α-Al2O3 is five or six times as much as that of pure Li1+xV3O8 （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-Al2O3 particles. At high temperature, diffusion effect of α-Al2O3 on electronic transport becomes great, the enhancement of ionic conductivity caused by α-Al2O3 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 Li1+xV3O8（x=0.1）. As a result, DSPP mainly increases ionic conductivity of the mixed conductors at room temperature.
崔万秋，陈文
摘 要：<正> The structure and electric properties of the mixed conductors of Li1+xV3O8（x=0.1） containing dispersed second-phase α-Al2O3 particles have been studied in the paper. The total conductivity of the specimen containing 6m/o α-Al2O3 is five or six times as much as that of pure Li1+xV3O8 （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-Al2O3 particles. At high temperature, diffusion effect of α-Al2O3 on electronic transport becomes great, the enhancement of ionic conductivity caused by α-Al2O3 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 Li1+xV3O8（x=0.1）. As a result, DSPP mainly increases ionic conductivity of the mixed conductors at room temperature.
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