Correlating cycle performance improvement and structural alleviation in LiMn2-xMxO4 spinel cathode materials: A systematic study on the effects of metal-ion doping
文献类型：期刊论文
| 作者 | Gu, HY; Wang, GJ; Zhu, CC; Hu, Y; Zhang, XM; Wen, W; Yang, XW; Wang, BF; Gao, X; Zhan, XL |
| 刊名 | ELECTROCHIMICA ACTA
 |
| 出版日期 | 2019 |
| 卷号 | 298期号:-页码:806—817 |
| 关键词 | SYNCHROTRON X-RAY DOPED LIMN2O4 ELECTROCHEMICAL PERFORMANCE COMPOSITE CATHODES SURFACE-CHEMISTRY PHASE-TRANSITIONS MANGANESE-SPINEL CAPACITY FADE LITHIUM AL |
| ISSN号 | 0013-4686 |
| DOI | 10.1016/j.electacta.2018.12.152 |
| 文献子类 | 期刊论文 |
| 英文摘要 | LiMn2-xMxO4 (M = Co, Ni, Fe, Cr, Al; x = 0, 0.05, 0.15, 0.2) cathode materials for lithium-ion batteries have been synthesized by an improved solid-state method. Samples were characterized by XRD, SEM, and XPS for their structure, morphology and surface conditions. Their electrochemical performance was also tested. Compared with pristine LiMn2O4, all LiMn(2-x)MxO(4) materials exhibited much better cycling stability between 3.0 V and 4.3 V. LiMn1.85Cr0.15O4 showed a superior cycling stability with a capacity retention of 96.6% after 100 cycles, which is 23% higher than that of the LiMn2O4 phase. The underlying mechanism of the improved cycle performance has been investigated by synchrotron-based X-ray diffraction under operating conditions for batteries. In situ XRD results proved that metal-ion-doped LiMn2O4 could hinder the phase transformation, reduce microstrain and volume shrinkage during cycling and improve their structural stability. The role of the doped metal ions was also confirmed by density functional theory calculations. (c) 2018 Elsevier Ltd. All rights reserved. |
| 语种 | 英语 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/31531]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2011-2017年 |
| 作者单位 | 1.Shanghai Univ Elect Power, Coll Environm & Chem Engn, Shanghai 200090, Peoples R China; 2.Zhejiang Univ, Coll Chem & Biol Engn, Zhejiang Prov Key Lab Adv Chem Engn Manufacture T, Hangzhou 310027, Zhejiang, Peoples R China; 3.Hubei Engn Univ, Coll Chem & Mat Sci, Xiaogan 432000, Peoples R China; 4.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai Synchrotron Radiat Facil, Shanghai 201204, Peoples R China; 5.Tongji Univ, Sch Mat Sci & Engn, Shanghai 201804, Peoples R China; 6.Shanghai Jiao Tong Univ, Dept Chem Engn, Shanghai Electrochem Energy Devices Res Ctr, Shanghai 200240, Peoples R China |
| 推荐引用方式 GB/T 7714 | Gu, HY,Wang, GJ,Zhu, CC,et al. Correlating cycle performance improvement and structural alleviation in LiMn2-xMxO4 spinel cathode materials: A systematic study on the effects of metal-ion doping[J]. ELECTROCHIMICA ACTA,2019,298(-):806—817. |
| APA | Gu, HY.,Wang, GJ.,Zhu, CC.,Hu, Y.,Zhang, XM.,...&He, QG.(2019).Correlating cycle performance improvement and structural alleviation in LiMn2-xMxO4 spinel cathode materials: A systematic study on the effects of metal-ion doping.ELECTROCHIMICA ACTA,298(-),806—817. |
| MLA | Gu, HY,et al."Correlating cycle performance improvement and structural alleviation in LiMn2-xMxO4 spinel cathode materials: A systematic study on the effects of metal-ion doping".ELECTROCHIMICA ACTA 298.-(2019):806—817. |
入库方式： OAI收割
来源：上海应用物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。