| Li2O-Al2O3-GeO2-P2O5微晶玻璃的微观结构和离子电导率 |
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| 引用本文： | 何 坤,王衍行,祖成奎,刘永华,赵慧峰,韩 滨,陈 江.Li2O-Al2O3-GeO2-P2O5微晶玻璃的微观结构和离子电导率[J].无机化学学报,2011,27(12):2484-2488. |
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| 作者姓名： | 何 坤 王衍行 祖成奎 刘永华 赵慧峰 韩 滨 陈 江 |
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| 作者单位： | 中国建筑材料科学研究总院，北京 100024,中国建筑材料科学研究总院，北京 100024,中国建筑材料科学研究总院，北京 100024,中国建筑材料科学研究总院，北京 100024,中国建筑材料科学研究总院，北京 100024,中国建筑材料科学研究总院，北京 100024,中国建筑材料科学研究总院，北京 100024 |
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| 基金项目： | 国家自然科学基金(No.60808024)资助项目 |
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| 摘 要： | 采用传统熔体冷却法制备了Li3-xAl2-xGex(PO4)3(x=1.1~1.9)体系玻璃,并通过热处理工艺获得了高电导率的微晶玻璃。通过XRD、TEM和交流阻抗等测试方法,研究了该系微晶玻璃的物相组成、微观形貌和锂离子电导率。结果表明:该系统微晶玻璃析出导电主晶相为LiGe2(PO4)3,杂质相为AlPO4和GeO2。当x=1.5时,由于导电主晶相LiGe2(PO4)3晶粒充分长大、分布均匀,所制备微晶玻璃的室温锂离子电导率最高(5.72×10-4 S.cm-1),可以满足全固态锂离子电池对电解质高室温电导率的要求。
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| 关 键 词： | 固体电解质 微晶玻璃 阻抗谱 电导率 |
Microstructure and Ionic Conductivity of Li2O-Al2O3-GeO2-P2O5 Glass-Ceramics |
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| HE Kun,WANG Yan-Hang,ZU Cheng-Kui,LIU Yong-Hu,ZHAO Hui-Feng,HAN Bin and CHEN Jiang.Microstructure and Ionic Conductivity of Li2O-Al2O3-GeO2-P2O5 Glass-Ceramics[J].Chinese Journal of Inorganic Chemistry,2011,27(12):2484-2488. |
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| Authors: | HE Kun WANG Yan-Hang ZU Cheng-Kui LIU Yong-Hu ZHAO Hui-Feng HAN Bin and CHEN Jiang |
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| Institution: | China Building Materials Academy, Beijing 100024, China,China Building Materials Academy, Beijing 100024, China,China Building Materials Academy, Beijing 100024, China,China Building Materials Academy, Beijing 100024, China,China Building Materials Academy, Beijing 100024, China,China Building Materials Academy, Beijing 100024, China and China Building Materials Academy, Beijing 100024, China |
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| Abstract: | Fast lithium ion conducting glass-ceramics containing Li3-xAl2-xGex(PO4)3(x=1.1~1.9) crystalline phase were prepared from Li2O-Al2O3-GeO2-P2O5 glasses.The results indicate that the glass-ceramics are mainly composed of solid solution LiGe2(PO4)3 in the whole x range,following by a small quantity of GeO2 and AlPO4 crystals as the impurity phases.The total ionic conductivity σt reaches a maximum value of 5.72×10-4 S·cm-1 at room temperature in Li1.5Al0.5Ge1.5(PO4)3 glass-ceramic with homogeneous crystals distribution. |
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| Keywords: | solid electrolyte glass-ceramics impedance spectroscopy conductivity |
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