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Updated: Sep 15, 2025

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基于PEO-SA-NaTFSI的粘合剂具有增强的附着性,快速的离子传输和强大的固体电解质介面,用于Sn阳极,使高性能离子电池成为可能

Hanxin Qian¹, Zhan Wu¹, Zhouyu Huang¹

¹College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, China.

ACS applied materials & interfaces

|July 18, 2025

概括

一种新的复合材料粘合剂PEO-SA-NaTFSI (PSN) 增强了离子电池 (SIB) 的 (Sn) 阳极. 这种粘合剂提高了粘附性,离子传输和SEI稳定性,从而提高了储存性能和长周期寿命.

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
储能储能储能储能储能储能

背景情况:

离子电池 (SIB) 提供具有成本效益和安全的大规模储能解决方案.
合金阳极为SIBs承诺更高的能量密度,但面临着像体积膨胀和不稳定的固体电解质介相 (SEI) 这样的挑战.

研究的目的:

开发用于锡 (Sn) 阳极的多功能复合材料粘合剂,以克服SIB的性能限制.
为了研究聚乙烯氧化物 (PEO),藻酸盐 (SA) 和二三甲基硫胺 (NaTFSI) 在粘合剂系统 (PSN) 中的协同效应.

主要方法:

复合粘合剂 (PSN) 的制造,包括PEO,SA和NaTFSI用于Sn阳极.
在SIB中Sn-PSN阳极的电化学表征,包括循环性能和速率能力测试.
组装和测试一个Sn-PSN的完整电池,以评估实际的储能性能.

主要成果:

Sn-PSN阳极在10 A g-1.1时显示出583.4 mA hg-1的高特异容量.
阳极在1500个循环后保持了77%的容量,表明了很好的长期稳定性.
完整的电池在200个循环后实现了81%的容量保留,电极能量密度为169.0 W h kg-1.1.

结论:

多功能PSN绑定器有效地解决了Sn节点中的体积扩张和SEI不稳定性问题.
开发的粘合剂系统显著提高了SIB的储存性能和循环寿命.
这种绑定器设计策略显示了在SIB中开发高性能阳极的广泛应用.

关键词:

这是一个Sn anode.粘合剂粘合剂粘合剂聚乙烯氧化物) 的存在.甲基酸盐的使用方法 (三甲硫) 胺基离子电池是一种离子电池.

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