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.Li3-2xB1-xNxO3(x=0.1,0.2,0.3)锂离子固体电解质的制备和性能研究[J].稀有金属材料与工程(英文),2018,47(12):3835~3836.[.Preparation and characterization of Li3-2xB1-xNxO3(x=0.1,0.2,0.3)solid electrolytes[J].Rare Metal Materials and Engineering,2018,47(12):3835~3836.]
Preparation and characterization of Li3-2xB1-xNxO3(x=0.1,0.2,0.3)solid electrolytes
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Received:March 21, 2017  Revised:May 15, 2017
Key words: solid phase method  solid electrolyte  ionic conductivity
Foundation item:陕西省工业科技攻关项目(项目号2016GY-170)
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      Samples of Li3-2xB1-xNxO3(x=0.1,0.2,0.3)compound with pure phase were obtained by coprecipitation method at the first time.Lithium nitrate, lithium carbonate and boron oxide were as the raw materials.The Li3-2xB1-xNxO3(x=0.1,0.2,0.3)precursor powders were sintered via pressureless sintering.And Li3-2xB1-xNxO3(x=0.1,0.2,0.3)solid electrolytes were characterized by x-ray diffraction (XRD), scanning electron microscopy (SEM) and electrochemical impedance spectroscopy (EIS). The results show that samples Li2.6B0.8N0.2O3 sintered at 600℃ by the non pressure sintering showed the highest total conductivity of 6.37×10-6S/cm.The activation energy is 0.48 eV at 250~390K. And its density is the reaching 90.07% of theoretical density.