Structure and electrochemical performance of LiNiyCo0.1-yMn1.9O4 cathode materials prepared by a precipitation method
文献类型：期刊论文
| 作者 | G. G. Wang ; J. M. Wang ; W. Q. Mao ; L. Q. Liu ; J. Q. Zhang ; C. N. Cao |
| 刊名 | Acta Physico-Chimica Sinica
 |
| 出版日期 | 2005 |
| 卷号 | 21期号:11页码:1285-1290 |
| 关键词 | lithium ion batteries substituted manganese spinel oxide precipitation electrochemical properties rechargeable lithium batteries li-ion batteries spinel phases doped limn2o4 intercalation electrodes impedance graphite diffusion cr |
| ISSN号 | 1000-6818 |
| 中文摘要 | Spinel LiMn2O4 and LiNiyCo0.1-yMn1.9O4 (y=0, 0.05, 0.10) samples were prepared by a precipitation method. The structure, morphology, and electrochemical performance of the samples were characterized by Fourier transform infrared(FT-IR) spectroscopy, X-ray diffraction (XRD), scanning electron micrographs (SEM), charge-discharge measurements, and electrochemical impedance spectra (EIS). The results of FT-IR and XRD indicated that the absorption band at about 519 cm(-1) shifts to the high frequency with the decrease of Ni content in LiNiyC0.1-yMn1.9O4 samples and the lattice parameter(a) of LiMn2O4 samples decreases with the addition of Ni, Co, or Ni/Co. The SEM observation dispplayed that the LiNiyCo0.1-yMn1.9O4 samples have lower agglomeration degree and smaller particle size. The results of the electrochemical experiments showed that the improvements on the electrochemical performance of substituted samples have some different reasons, and the LiNi0.05Co0.05Mn1.9O4 sample manifests better electrochemical performance in 4 V region due to its lower electrochemical polarization and larger diffusion coefficient of Li+ ions. |
| 原文出处 | |
| 公开日期 | 2012-04-14 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/35066]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | G. G. Wang,J. M. Wang,W. Q. Mao,et al. Structure and electrochemical performance of LiNiyCo0.1-yMn1.9O4 cathode materials prepared by a precipitation method[J]. Acta Physico-Chimica Sinica,2005,21(11):1285-1290. |
| APA | G. G. Wang,J. M. Wang,W. Q. Mao,L. Q. Liu,J. Q. Zhang,&C. N. Cao.(2005).Structure and electrochemical performance of LiNiyCo0.1-yMn1.9O4 cathode materials prepared by a precipitation method.Acta Physico-Chimica Sinica,21(11),1285-1290. |
| MLA | G. G. Wang,et al."Structure and electrochemical performance of LiNiyCo0.1-yMn1.9O4 cathode materials prepared by a precipitation method".Acta Physico-Chimica Sinica 21.11(2005):1285-1290. |
入库方式： OAI收割
来源：金属研究所
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。