| LiAl_xMn_(2-x)O_4的制备及其在酸介质中的稳定性 |
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| 引用本文： | 马立文,陈白珍,石西昌,徐 徽,杨喜云,张 坤.LiAl_xMn_(2-x)O_4的制备及其在酸介质中的稳定性[J].无机化学学报,2010,26(3):413-418. |
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| 作者姓名： | 马立文 陈白珍 石西昌 徐 徽 杨喜云 张 坤 |
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| 作者单位： | 中南大学冶金科学与工程学院,长沙,410083 |
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| 基金项目： | 国家科技支撑计划"十一五"重大项目 |
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| 摘 要： | 采用沉淀法合成了系列掺Al尖晶石氧化物LiAl_xMn_(2-x)O_4(x=0,0.3,0.5,0.7,1.0)。通过X射线衍射(XRD)、能量色散谱(EDS)和扫描电子显微镜(SEM)等方法对其结构、成分和形貌进行了表征,并通过酸浸实验考察了不同组成和不同焙烧温度的LiAl_xMn_(2-x)O_4在弱酸性介质中的稳定性。结果表明当x为0.5,合成温度为850℃时,Al能最大程度地纳入尖晶石晶格,形成结晶致密、成分均匀的产物。同时,LiAl_(0.5)Mn_(1.5)O_4能较大程度地抑制Mn在弱酸条件下的溶出,而具有较低的Al溶出率和较高的Li溶出率。酸浸后LiAl_(0.5)Mn_(1.5)O_4仍保持尖晶石结构且形貌完整。
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| 关 键 词： | 锂锰氧化物 Al掺杂 结构 稳定性 |
Al-Doped Lithium Manganese Oxide: Preparation and Stability in Acid Medium |
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| MA Li-Wen,CHEN Bai-Zhen,SHI Xi-Chang,XU Hui,YANG Xi-Yun and ZHANG Kun.Al-Doped Lithium Manganese Oxide: Preparation and Stability in Acid Medium[J].Chinese Journal of Inorganic Chemistry,2010,26(3):413-418. |
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| Authors: | MA Li-Wen CHEN Bai-Zhen SHI Xi-Chang XU Hui YANG Xi-Yun and ZHANG Kun |
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| Institution: | School of Metallurgical Science and Engineering, Central South University, Changsha 410083,School of Metallurgical Science and Engineering, Central South University, Changsha 410083,School of Metallurgical Science and Engineering, Central South University, Changsha 410083,School of Metallurgical Science and Engineering, Central South University, Changsha 410083,School of Metallurgical Science and Engineering, Central South University, Changsha 410083 and School of Metallurgical Science and Engineering, Central South University, Changsha 410083 |
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| Abstract: | A series of Al-doped spinel oxides LiAl_xMn_(2-x)O_4(x=0,0.3,0.5,0.7,1.0) were synthesized by precipitation method.Their structure,composition and morphology were characterized by X-ray diffraction(XRD),energy dispersive spectroscopy(EDS) and scanning electron microscopy(SEM).The stability of these Al-doped spinel oxides prepared at different temperatures was investigated in acid medium as well.The results show that Al can be brought into the spinel framework completely to form well-crystallized product acc... |
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| Keywords: | lithium manganese oxide Al dopin structure stability |
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