Atomic Structure of Li2MnO3 after Partial Delithiation and Re-Lithiation
文献类型：期刊论文
| 作者 | Wang, R ; He, XQ ; He, LH ; Wang, FW ; Xiao, RJ ; Gu, L ; Li, H ; Chen, LQ |
| 刊名 | ADVANCED ENERGY MATERIALS
 |
| 出版日期 | 2013 |
| 卷号 | 3期号:10页码:1358 |
| ISSN号 | 1614-6832 |
| 通讯作者 | Gu, Lin (reprint author), Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China |
| 中文摘要 | Li2MnO3 is the parent compound of the well-studied Li-rich Mn-based cathode materials xLi(2)MnO(3)center dot(1-x)LiMO2 for high-energy-density Li-ion batteries. Li2MnO3 has a very high theoretical capacity of 458 mA h g(-1) for extracting 2 Li. However, the delithiation and lithiation behaviors and the corresponding structure evolution mechanism in both Li2MnO3 and Li-rich Mn-based cathode materials are still not very clear. In this research, the atomic structures of Li2MnO3 before and after partial delithiation and relithiation are observed with spherical aberration-corrected scanning transmission electron microscopy (STEM). All atoms in Li2MnO3 can be visualized directly in annular bright-field images. It is confirmed accordingly that the lithium can be extracted from the LiMn2 planes and some manganese atoms can migrate into the Li layer after electrochemical delithiation. In addition, the manganese atoms can move reversibly in the (001) plane when ca. 18.6% lithium is extracted and 12.4% lithium is re-inserted. LiMnO2 domains are also observed in some areas in Li1.63MnO3 at the first cycle. As for the position and occupancy of oxygen, no significant difference is found between Li1.63MnO3 and Li2MnO |
| 语种 | 英语 |
| 公开日期 | 2014-01-16 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/56792]  |
| 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 | Wang, R,He, XQ,He, LH,et al. Atomic Structure of Li2MnO3 after Partial Delithiation and Re-Lithiation[J]. ADVANCED ENERGY MATERIALS,2013,3(10):1358. |
| APA | Wang, R.,He, XQ.,He, LH.,Wang, FW.,Xiao, RJ.,...&Chen, LQ.(2013).Atomic Structure of Li2MnO3 after Partial Delithiation and Re-Lithiation.ADVANCED ENERGY MATERIALS,3(10),1358. |
| MLA | Wang, R,et al."Atomic Structure of Li2MnO3 after Partial Delithiation and Re-Lithiation".ADVANCED ENERGY MATERIALS 3.10(2013):1358. |
入库方式： OAI收割
来源：物理研究所
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