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自愈离子导电结合剂用于离子电池中的高性能SiO阳极_x

Xianhao Long¹, Liangxin Xie¹, Chuxiong Huang¹

¹School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China.

ACS applied materials & interfaces

|September 12, 2025

概括

一种新的自我修复聚合物粘合剂 (PPC) 通过适应体积变化来提高离子电池中氧化 (SiO_{x) 阳极的稳定性. 这项创新提高了电池的寿命和性能,用于下一代储能.}

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
聚合物化学聚合物化学

背景情况:

氧化 (SiO_x) 阳极为离子电池提供高能量密度.
在循环过程中体积膨胀会导致SiO_x阳极降解,限制电池寿命.
开发稳定的阳极对于下一代高能量密度电池至关重要.

研究的目的:

为SiO_x阳极开发一种自我修复的聚合物粘合剂.
为了提高SiO_x阳极的稳定性和周期寿命.
为了提高高能量密度的离子电池的性能.

主要方法:

合成了一种自愈结合剂 (PPC),使用聚-酸 (PLA) 和聚烯酸 (PAA) 与胆化物 (ChCl).
使用动态共价 (S-S) 和键进行物理交联.
研究了粘合剂适应体积变化和消除压力的能力.

主要成果:

PPC粘合剂有效地适应了SiO_x体积膨胀,提高了阳极稳定性.
带有PPC粘合剂的SiO电极在2000mAg-1的200个循环后保持了85%的容量.
SiO _{x _{白玉玉 NCM622 全细胞在0.5°C的100个循环后显示95.1%的容量保留.}}

结论:

自愈的PPC粘合剂显著改善SiO_x阳极的循环稳定性.
这种粘合剂设计为开发耐用的高能量密度离子电池提供了有前途的战略.
动态共价和键的组合提供了机械强度和自我修复能力.

关键词:

氧阳极是一种氧阳极.离子电池是一种离子电池.聚烯酸) 是一种聚烯酸.聚乙烯 (聚乙烯) 是一种聚乙烯 (聚乙烯,聚乙烯) 化合物.它具有自我愈合的功能.

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