Influence of Al3+ ions on the morphology and structure of layered LiMn1-xAlxO2 cathode materials for the lithium ion battery
文献类型：期刊论文
| 作者 | He, Y ; Yuan, FM ; Ma, H ; Bai, XD ; Yang, XJ |
| 刊名 | JOURNAL OF ALLOYS AND COMPOUNDS
 |
| 出版日期 | 2013 |
| 卷号 | 569页码:67 |
| 关键词 | LiMn1-xAlxO2 Doping Cathode material Lithium ion batteries |
| ISSN号 | 0925-8388 |
| 通讯作者 | Yang, XJ (reprint author), Beijing Normal Univ, Coll Chem, Beijing 100875, Peoples R China. |
| 中文摘要 | Orthorhombic LiMn1-xAlxO2 nanocrystals (Pmmn (59), origin choice 2) with different morphologies were successfully synthesized using Mn2O3 and Al2O3 as Mn- and Al-sources in a 3.5 M LiOH aqueous solution hydrothermally treated at 150 degrees C. Although Al3+ ions introduced into the starting hydrothermal solution was in a large amount from 0 to 0.33 of Al/Mn molar ratio, noted as Al/Mn(HT) where HT refers to hydrothermal treatment; the ratio was as low as 0.05 in the phase-pure LiMn1-xAlxO2 crystals, noted as Al/Mn(SS) where SS refers to solid solution, while a Al/Mn(HT) ratio higher than 0.5 resulted in the formation of orthorhombic LiAlO2 phase. With an increase of Al/Mn(SS), the average oxidation number was higher than 3 and gradually increased, leading to a monotonous shrinkage of the unit cell along a-axis (the zigzag direction of the metal-oxygen octahedron layers). Furthermore, Al3+ also influenced on the morphology of the crystals: (1) cuboid shaped crystals as (Al/Mn(SS) < 0.02), with the ascendant growth in the direction vertical to the layer; and (2) cubic-like crystals as Al/Mn(SS) > 0.02 can be obtained. Galvanostatic measurement exhibited that the capacity of the electrode composed of Li0.93Mn0.96Al0.04O2 can reach a discharge capacity of 175 mAh/g at a current density of 0.1C and the capacity retention could be 82.9% after 25th cycling, showing that Al3+ can stabilize the layered structure by retarding its transforming to spinel one. (C) 2013 Elsevier B. V. All rights reserved. |
| 资助信息 | National Science Foundations of China [50872012] |
| 语种 | 英语 |
| 公开日期 | 2014-01-16 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/57108]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | He, Y,Yuan, FM,Ma, H,et al. Influence of Al3+ ions on the morphology and structure of layered LiMn1-xAlxO2 cathode materials for the lithium ion battery[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2013,569:67. |
| APA | He, Y,Yuan, FM,Ma, H,Bai, XD,&Yang, XJ.(2013).Influence of Al3+ ions on the morphology and structure of layered LiMn1-xAlxO2 cathode materials for the lithium ion battery.JOURNAL OF ALLOYS AND COMPOUNDS,569,67. |
| MLA | He, Y,et al."Influence of Al3+ ions on the morphology and structure of layered LiMn1-xAlxO2 cathode materials for the lithium ion battery".JOURNAL OF ALLOYS AND COMPOUNDS 569(2013):67. |
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来源：物理研究所
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