• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Russian Journal of Physical Chemistry >Effect of Preparation Parameters on Microstructure of Ni0.8Co0.1Mn0.1(OH)(2) Precursors
【24h】

Effect of Preparation Parameters on Microstructure of Ni0.8Co0.1Mn0.1(OH)(2) Precursors

机译：Effect of Preparation Parameters on Microstructure of Ni0.8Co0.1Mn0.1(OH)(2) Precursors

获取原文
获取原文并翻译 | 示例
       
页面导航
  • 摘要
  • 著录项
  • 相关主题

摘要

The electrochemical performance of LiNixCoyMn1-x-yO2 materials largely depend on the quality of precursor. Co-precipitation is an effective way to attain an excellent morphology, particle size and distribution of NixCoyMn1-x-y(OH)(2) particles, which is still a huge challenge in pH regulation of the reaction system to influence supersaturation. Here, Ni0.8Co0.1Mn0.1(OH)(2) precursors were prepared as an example by regulating Ni2+ concentration in the supernatant instead of adjusting pH value, and the effect of preparation process parameters on microstructure of precursor was evaluated quantitatively. Particle size distribution of Ni0.8Co0.1Mn0.1(OH)(2) precursor was evaluated from SEM images, and the electrochemical performance of LiNi0.8Co0.1Mn0.1O2 cathode materials were studied using LAND battery test system. The results showed that more homogeneous particle size distribution was attained in samples prepared by regulating concentration of Ni2+ in supernatant than with pH regulation. Average particle size increased from 4.1 to 5.9 mu m, and peak width at half height were 1.37 and 1.16 mu m, respectively. Same conclusions could also drawn from standard deviation, peak area and peak height data. Electrochemical data demonstrate that rate capabilities were 206.7, 183.2, 171, 161.8, and 145.5 mA h/g from 0.1 to 10 C, respectively and capacity retention was 86.6% after 100 cycles at 1 C, which were better than the pH regulation progress. These results indicate that regulation of concentration of Ni2+ in supernatant has better performance and is suitable for industrial applications.

著录项

获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号