High-performance anode-less all-solid-state batteries enabled by multisite nucleation and an elastic network.

EES batteries Pub Date : 2025-04-11 eCollection Date: 2025-06-09 DOI:10.1039/d5eb00050e
Jihoon Oh, Yeeun Sohn, Jang Wook Choi
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Abstract

Anode-less all-solid-state batteries (ALASSBs) represent a promising energy storage platform for various upcoming green mobility applications, as they offer superior energy density, manufacturing feasibility, and enhanced safety. However, their practical implementation is hindered by the formation of heterogeneous lithium (Li) deposits during repeated cycling, particularly at ambient temperatures. In this study, we introduce a novel multi-seed strategy that integrates strategically distributed nucleation sites with a highly elastic and adhesive polymer matrix. The incorporation of multiple lithiophilic metallic seeds with a range of lithiation potentials promotes uniform Li deposition by facilitating diversified lithiation pathways. Simultaneously, the elastic polymer network enables stress dissipation across the protection layer, thereby effectively mitigating mechanical degradation. Even at room temperature (25 °C), the resulting anode-less full-cell retained 70% of its capacity after 100 cycles at a current density of 0.5C (1C = 2 mA cm-2). This study conveys a useful design principle for protective layers in ALASSBs: the advantageous synergistic effect created by combining multiple lithiophilic seeds with enlarged nucleation pathways and a stress-releasing elastic binder.

高性能无阳极全固态电池由多位点成核和弹性网络实现。
无阳极全固态电池(alassb)提供了优越的能量密度、制造可行性和增强的安全性,为各种即将到来的绿色移动应用提供了一个有前途的能量存储平台。然而,在重复循环过程中,特别是在环境温度下,形成非均相锂(Li)沉积物阻碍了它们的实际实施。在这项研究中,我们介绍了一种新的多种子策略,该策略将战略性分布的成核位点与高弹性和粘性聚合物基质结合在一起。具有一系列锂化电位的多种亲锂金属种子的结合通过促进多样化的锂化途径促进了均匀的锂沉积。同时,弹性聚合物网络使应力在保护层上消散,从而有效地减轻机械退化。即使在室温(25°C)下,在0.5C (1C = 2 mA cm-2)的电流密度下,经过100次循环后,所得到的无阳极全电池也能保持70%的容量。这项研究传达了一个有用的alassb保护层设计原则:将多个亲石种子与扩大的成核途径和释放应力的弹性粘合剂结合在一起,产生有利的协同效应。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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