Effects of Li replacement on the nucleation, crystallization and microstructure of Li2O-Al2O3-SiO2 glass
Effects of Li replacement on the nucleation, crystallization and microstructure of Li2O-Al2O3-SiO2 glass
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DOI：
10.1016/j.jnoncrysol.2008.05.013
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发表时间：
2008-09
影响因子：
3.5
通讯作者：
Guo Xingzhong;Zhang Lingjie;Y. Hui
中科院分区：
文献类型：
--
作者：
Guo Xingzhong;Zhang Lingjie;Y. Hui
为了降低锂离子电池的生产成本，研究了以其他氧化物替代Li 2 O，以廉价锂辉石矿物替代昂贵的Li 2CO 3等替代锂的方法。（Li 2 O-Al 2 O3-SiO2，LAS）微晶玻璃，采用差热分析（DTA）研究了Li置换对LAS微晶玻璃的形核、析晶及显微结构的影响，X射线衍射（XRD）和扫描电子显微镜（SEM）。结果表明，Li 2 O置换提高了晶化激活能，抑制了晶体生长，提高了形核温度和晶化温度。Li 2CO 3置换降低了晶化活化能，促进了晶体生长，但不影响成核，并通过添加一些有益组分，具有混合碱效应，降低了晶化温度。
The Li replacement including the Li2O replaced by other oxides and the expensive Li2CO3replaced by low-cost spodumene mineral was studied to lower the product cost of (Li2O–Al2O3–SiO2, LAS) glass ceramic, and the effects of Li replacement on the nucleation, crystallization and microstructure of LAS glass were investigated by the differential thermal analysis (DTA), X-ray diffraction (XRD) and scanning electron microscopy (SEM). The results show that Li2O replacement increases the crystallization activation energy, lowers the crystal growth, and increases the nucleation and crystallization temperature by restraining the formation of crystalline phases. The Li2CO3replacement decreases the crystallization activation energy, promotes the crystal growth, without affecting the nucleation, and lowers the crystallization temperature by adding some beneficial compositions with mixed alkali effect.