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解开和调整竞争动力学在Ni-Rich阴极材料的直接再生中的竞争动力学

Ruyu Shi¹, Junfeng Li¹, Jiaxiang Zhao¹

¹Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, 518055, China.

Advanced materials (Deerfield Beach, Fla.)

|July 7, 2025

概括

离子电池的直接再生可以通过一种新的低温再化工艺来改进. 这种方法提高了结构稳定性,并促进了回收电池材料的容量回收.

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
可持续能源可持续能源

背景情况:

直接再生旨在通过补充组件回收使用的离子电池材料.
目前的高温方法由于缺乏和氧气损失导致结构退化.
反化和热分解之间的冲突限制了再生的有效性.

研究的目的:

阐明直接再生中的反应机制.
确定克服当前再生方法局限性的策略.
提高使用过的离子电池材料的回收效率和性能.

主要方法:

研究了在直接再生过程中反应的序列和动态演变.
确定并推广一种低温的先前再化工艺.
分析了这一过程对材料结构和电化学性能的影响.

主要成果:

发现了一种在较低温度下发生的新型先前再化过程.
促进先前再化增加氧气空位形成能量,稳定阴极结构.
与传统方法相比,实现了15%的更高容量回收率和更好的电化学性能.

结论:

直接再生机制得到了更好的理解,突出了先前再化的重要性.
在较低温度下稳定阴极结构可以缓解再生过程中的热分解.
这项研究为开发先进,更有效的离子电池直接再生策略提供了基础.

关键词:

丰富的阴极材料是.直接回收利用的直接回收利用直接再生机制的直接再生机制化过程的重新化过程.使用过的离子电池.

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