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调垂直电极定位,用于没有树突的离子电池

Jin Cao^1,2, Mingzi Sun³, Dongdong Zhang^2,4

¹College of Hydraulic & Environmental Engineering, China Three Gorges University, Yichang, Hubei 443002, China.

|June 18, 2024

概括

将2-甲基利米达 (Mlz) 添加到硫酸 (ZSO) 电解质中,可以促进垂直电沉积,提高离子电池 (ZIB) 的性能和寿命. 这种策略可以抑制树突和副作用,从而改善能量储存设备的性能.

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
储能储能储能储能储能储能

背景情况:

树突和副作用阻碍了水性离子电池 (ZIB) 的性能.
控制沉积的结晶学方向是改善ZIB的关键.

研究的目的:

研究2 - 甲基利米达 (Mlz) 添加剂对硫酸 (ZSO) 电解质中沉积的影响.
通过控制阳极的晶体方向来提高水性ZIB的性能和寿命.

主要方法:

作为硫酸盐 (ZSO) 电解液中的添加剂,利用了2-甲基胺醇 (Mlz).
针对Zn光和Zn光MnO2电池配置进行了电化学沉积和循环测试.
进行理论计算以了解Mlz在沉积上的机制.

主要成果:

实现了垂直电极沉积,具有 (100) 和 (110) 晶体平面的偏好方向.
在ZnRacingZn电池中证明了长寿命 (1500小时在1 mA cm-2) 和在ZnRacingMnO2电池中保持出色的容量 (68.8%超过800个周期).
理论计算证实Mlz阻碍了 (002) 平面的增长,同时促进了Zn在 (100) 和 (110) 平面上的移动性.

结论:

Mlz添加剂有效地控制了的晶体学方向,从而实现了卓越的ZIB性能.
该研究为设计高能量密度ZIB提供了一个可行的策略.
优化的沉积增强了电池的稳定性和周期寿命.

关键词:

2 - 甲基利米达二醇结晶学定向的结晶学方向树突 (dendrites) 是一种树突.电极位置的电极位置离子电池离子电池

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