标题:The effect of aluminum precursors on the structural and electrochemical properties of spinel LiMn2-xAlxO4(x=0, 0.05, 0.1, 0.15) cathode materials
作者:Feng, Xiaoyu ;Tian, Yun ;Zhang, Jianxin ;Yin, Longwei
作者机构:[Feng, Xiaoyu ;Tian, Yun ;Zhang, Jianxin ;Yin, Longwei ] Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials, Ministry of 更多
通讯作者:Zhang, J
来源:Powder Technology
出版年:2014
卷:253
页码:35-40
DOI:10.1016/j.powtec.2013.11.006
摘要:In this paper, the effect of different aluminum precursors, i.e., Al(OH)3and Al2O3, on the structural and electrochemical properties of spinel LiMn2-xAlxO4(x=0, 0.05, 0.1, 0.15) is investigated by X-ray diffraction (XRD), micro-Raman spectroscopy (RS), field-emission scanning electron microscopy (FE-SEM) and charge-discharge cycling test. In particular, the ratio of Raman intensity at 625cm-1to Raman intensity at 585cm-1provides crucial insights into the Al substitution in spinel LiMn2O4lattice. The XRD patterns and FE-SEM images show that the crystal structure and the particle morphologies of LiMn2-xAlxO4are not altered by use of either Al(OH)3or Al2O3as Al precursors. However, the Raman spectra show that Al doping behavior is significantly affected by Al precursors, with Al(OH)3serving as a more effective Al precursor than Al2O3. Such conclusion is further supported by the electrochemical cycling results. © 2013 Elsevier B.V.
收录类别:EI
资源类型:期刊论文
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