| 不同原料对Li-Ni-Mn-O 5 V正极材料的结构和性能的影响 |
| Effect of Precursors on Structure and Performance of 5 V Li-Ni-Mn-O Cathode Materials |
|
| 摘要: |
| 关键词: 镍锰酸锂 尖晶石 正极材料 锂离子电池 |
| 基金项目: |
| Abstract: LiNi0.5Mn1.5O4 was synthesized by solid-state reaction with different Ni containing precursors. The effect of precursor on electrochemical performance was studied. It was demonstrated that LiNi0.5Mn1.5O4 synthesized with Ni(NO3)2·6H2O as precursor had good charge-discharge performances. At the potential range of 3.0～5.0 V, the reversible capacity of the above LiNi0.5Mn1.5O4 could reach to 145 mAh·g-1 and remained 143 mAh·g-1 after 10 cycles, while at 3.0～4.9 V, there was still 133 mAh·g-1 reversible capacity, and was 125 mAh·g-1 after 40 cycles. XRD results indicated that the synthesized compound was with spinel structure. The precursors and dispersion method had remarkable effect on the structures of the resulting compounds. Pure spinel phase could be obtained with mechanical ball-milled method and Ni(NO3)2·6H2O as precursor, and trace amount of NiO phase could be detected in LiNi0.5Mn1.5O4 with simple mixture method and using Ni(CH3COO)2·6H2O, NiO and Ni2O3 as precurs-ors. |
| Keywords: LiNi0.5Mn1.5O4 spinel cathode materials lithium ion battery |
| 投稿时间：2005-02-22 修订日期：2005-05-18 |
| 摘要点击次数: 912 |
| 全文下载次数: 1310 |
| 陈召勇,肖劲,朱华丽,刘业翔.不同原料对Li-Ni-Mn-O 5 V正极材料的结构和性能的影响[J].无机化学学报,2005,21(9):1417-1421. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
| Support information: |
|
|
|
|
|
|
