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灵活的水性离子电池的高性能耐疲劳的双重聚氨水凝电解质

Junkang Xu¹, Yiran Zhu², Qinghua Gui³

¹CAS Key Laboratory of Mechanical Behavior and Design of Materials, Department of Modern Mechanics, CAS Center for Excellence in Complex System Mechanics, University of Science and Technology of China, Hefei, 230027, China.

Small (Weinheim an der Bergstrasse, Germany)

|March 4, 2025

概括

一种具有滑环结构的新型抗疲劳水凝电解质增强了灵活的可穿戴能源存储. 这种耐用,自我修复的材料提高了离子电池的性能和先进应用的寿命.

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
聚合物化学聚合物化学

背景情况:

传统的半固体水性离子电池 (ZIB) 面临机械降解,限制了它们在柔性设备中的使用.
ZIB中的水凝电解质往往缺乏对重复的机械应力所需的耐用性.
树突的形成和寄生虫反应阻碍了ZIBs的长期稳定性.

研究的目的:

为下一代灵活的可穿戴能源存储系统开发一种新型的抗疲劳水凝电解质.
为了提高水凝电解质的机械耐用性,自我愈合和粘附性.
提高准固态ZIB的电化学性能和循环稳定性.

主要方法:

合成双聚氨酸 (DPR) - 聚烯酸 (PAA) 水凝,具有滑环架构.
描述水凝的机械性能,离子导电性和自我愈合能力.
使用新型水凝电解质制造和测试一个灵活的准固态Zn-MnO2电池.

主要成果:

该DPR-PAA水凝表现出增强的机械耐用性,自我愈合和附着性.
水凝电解质保证了高离子导电性和均的沉积,抑制了树突石的形成.
灵活的Zn-MnO2电池实现了高特异性容量 (295 mAh g−1 在0.5C),优异的速率能力 (147 mAh g−1 在5C) 和显著的循环稳定性 (81.52%的保留1000个循环后).
证明了特殊的电极稳定性 (超过1750小时) 和在机械应力 (压力,折叠,扭转) 下的可靠操作.

结论:

新的滑环结构水凝电解质为灵活储能提供了耐用和高性能的解决方案.
这种水凝设计的进步对于可穿戴储能设备的实际实施至关重要.
开发的水凝显著提高了可穿戴电子产品水性ZIB的安全性和寿命.

关键词:

水性离子电池水性离子电池没有树的 Zn 阳极是无树的.水凝的电解质是水凝的电解质.聚罗塔克桑是一种多氧化物.

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