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多级Zn2+-缓冲间相通过等级纳米结构工程启用凝聚合物的高可逆金属阳极的多级Zn2+缓冲间相

Chang Yan¹, Ling Zhu¹, Peng Li¹

¹Guangxi Key Laboratory of Electrochemical Energy Materials, School of Chemistry and Chemical Engineering, Guangxi University, 100 Daxue Road, Nanning, 530004, China.

Advanced materials (Deerfield Beach, Fla.)

|October 13, 2025

概括

通过缓冲Zn2+离子,工程化水凝间相稳定水性离子电池 (AZIB) 中的阳极. 这种策略可以防止树石的生长,显著提高电池周期寿命和电网规模应用的性能.

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:

水性离子电池 (AZIB) 面临着不稳定的Zn阳极的挑战,导致树突的生长和限制周期寿命的副作用反应.
现有的策略难以平衡Zn2+运输与抑制阳极界面的有害副作用.

研究的目的:

开发一个层次的纳米结构工程水凝介相层,以稳定AZIB中的Zn阳极.
为了实现多级Zn2+缓冲,以提高AZIBs的周期寿命和性能.

主要方法:

一种易于共聚化诱导的微相分离 (CIMS) 策略被用于创建水凝间相.
这种水凝包含甲基烯酸氧烯酸类型的多面体寡合物丝素 (MP-POSS),用于纳米封闭和疏水性.
在水凝中通过CIMS在极性共聚体和MP-POSS之间形成了分层分子集群.

主要成果:

工程水凝促进Zn2+解溶,阻止水/SO42-透,并优化Zn2+运输,最大限度地减少副作用反应.
层次的分子集群使 Zn2+ 流同质化,并减少度极化,使得无树的 Zn 沉积成为可能.
对称细胞的寿命超过5500小时 (1 mA cm-2) 和1500小时 (10 mA cm-2);不对称细胞在3600个循环后达到99.6%的库伦比效率.
带有MnO2和V2O5阴极的全电池显示出良好的容量保留 (85.4%和84.7%分别在1000和2000循环后).

结论:

通过凝聚合物层次纳米结构工程展示了一种新的多级Zn2+缓冲机制.
开发的水凝介相为推进电网规模AZIB的循环寿命和性能提供了可行的策略.

关键词:

人工界面层人工界面层这是一种水凝.纳米封闭是指纳米封闭.多面体的寡合性丝素 (POSS)离子电池离子电池

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