接近离子电池丰富层级阴极的最终合成反应速率
Zhedong Liu1, Jingchao Zhang1, Jiawei Luo1
1School of Materials Science and Engineering, Tianjin University, Tianjin, 300072, People's Republic of China.
Nano-micro letters
|June 6, 2024
概括
高温冲击 (HTS) 合成快速产生富含的多层氧化物 (NCM) 阴极材料用于离子电池. 这种新的方法加快了固相过渡,使得NCM的高效生产具有出色的循环性能.
科学领域:
- 材料科学 材料科学 材料科学
- 电化学 电化学 电化学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 富含的分层氧化物 (NCM) 对于高能离子电池至关重要.
- 传统的NCM合成方法存在缓慢的动力学和高能耗问题.
研究的目的:
- 为了研究快速NCM合成的高温冲击 (HTS) 策略.
- 探索NCM材料中固相过渡的最终反应速率.
主要方法:
- 使用高温冲击 (HTS) 技术合成NCM材料.
- 研究了从氧化物前体到含氧化物的相变动态.
主要成果:
- 实现了NCM相位过渡的超快平均反应速率66.7 (%s-1),在1.5秒内完成.
- 通过HTS合成的NCM材料 (NCM523,NCM622,NCM811) 显示出强大的循环性能 (例如,NCM523/NCM622在4.3V的200个循环后保持94%的容量).
结论:
- 高温冲击 (HTS) 为NCM阴极材料的快速高效合成提供了一条有效的途径.
- 这项研究为先进电池材料的加速反应动力学提供了洞察力.
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