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控制形状的可逆金属涂层剥离,用于稳定和高速率的无阳极金属电池

Yuxuan Wang^1,2, Yuhao Li^1,2, Xiaohan Wang¹

¹Frontiers Science Center for Flexible Electronics, Institute of Flexible Electronics, Northwestern Polytechnical University, Xi'an, 710072, P. R. China.

Advanced materials (Deerfield Beach, Fla.)

|March 12, 2025

概括

研究人员开发了一种新的无阳极金属电池,使用涂上LiPON的空心ZnO矩阵. 这种设计提高了循环稳定性和高速率性能,用于先进的储能解决方案.

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:

无阳极的金属电池具有高能量密度和低成本,但周期稳定性和速率能力不佳.
实际应用受阻于诸如树形成和不稳定的固体电解质介相 (SEI) 等问题.

研究的目的:

开发一种无改变形状的阳极,可以控制可逆涂/剥离,以提高电池性能.
为了提高无阳极金属电池的循环稳定性和速率能力.

主要方法:

制造一个空洞的氧化 (ZnO) 矩阵与--氧化 (LiPON) 表面涂层.
在半细胞和全细胞配置中修改过的阳极的电化学表征.
在不同速度下评估循环稳定性,库伦比效率和能量密度.

主要成果:

O矩阵提供了空洞和友位,用于统一的沉积/剥离.
LiPON 层保护了固体电解质间相免受损坏.
半电池在1.2 mA cm-2下实现了335个周期,库伦比效率为98.8%.
全电池的寿命为150个周期,能量密度高 (在2°C时为617Wh kg−1).

结论:

开发的阳极有效地控制涂/剥离,在循环过程中增强形状稳定性.
这种方法显著提高了无阳极金属电池的循环稳定性和速率能力.
这些发现为实用,高能量密度和成本效益的金属电池铺平了道路.

关键词:

没有阳极的金属电池.高利率的高利率的高利率长期稳定的长期稳定性可逆性的可逆性控制形状的控制形状.

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