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微量高性兴奋剂解锁了用于离子电池的高能量,高速率和稳定的基于Mn的NASICON阴极

Xiaoteng Zhang¹, Hao Fan², Ping Hu³

¹The Sanya Science and Education Innovation Park, Wuhan University of Technology, Sanya 572000, P. R. China. yuruohan@whut.edu.cn.

|December 10, 2025

概括

高性兴奋剂增强了Na3MnTi(PO4) 3 (NMTP) 材料中的储存. 这一战略提高了先进的离子电池的容量,速率性能和循环稳定性.

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
储能储能储能储能储能储能

背景情况:

像Na3MnTi(PO4)3 (NMTP) 这样的聚离子化合物显示出高容量储存的潜力.
然而,NMTP材料往往表现出低循环性和高离子扩散障碍.

研究的目的:

为了解决NMTP对储存的局限性.
通过一种新的兴奋剂策略来提高可循环,速率能力和能量密度.

主要方法:

在NMTP结构上引入了一种微量高的兴奋剂设计.
在低度下,五种元素 (V,Fe,Al,Cr,Cu) 的协同结合.

主要成果:

高度的化Na3.14MnTi0.9(VFeAlCrCu) 0.02(PO4) 3 (HE-Na3.14MTP) 实现了167.2mAhg-1.0的容量.
在0.1C时记录了553Wh kg-1的能量密度,在5C的900个循环后保持了91%的容量.

结论:

高性兴奋剂有效地解决了NMTP中的容量衰减和Na+扩散障碍.
这种兴奋剂策略为开发用于离子电池的先进的Mn基电极材料提供了一个有希望的方法.

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