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通过碳纳米管封闭的普鲁士蓝色晶体来提高离子电池的性能

Jiayi Fu¹, Yuhang Wang¹, Zanyu Sun¹

¹College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, PR China.

Langmuir : the ACS journal of surfaces and colloids

|September 9, 2025

概括

研究人员开发了用碳纳米管 (CNT) 增强的普鲁士蓝色 (PB) 阴极,用于离子电池. 这种混合材料提高了导电性和稳定性,为高效的大规模能源存储铺平了道路.

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:

离子电池为电网规模的储能提供了一个低成本的替代方案.
普鲁士蓝色阴极面临着低导电性和低循环稳定性的挑战.

研究的目的:

为了提高离子电池的普鲁士蓝色阴极性能.
使用碳纳米管来提高导电性和循环稳定性.

主要方法:

合成的普鲁士蓝 (PB) 杂交与使用谷氨基酸辅助的 in situ 协调路径使用氧基功能化碳纳米管 (CNT).
使用XPS对PB@CNT复合物进行了表征,以确认Fe-O-C共价链接.
评估电化学性能,包括放电能力,速率能力和循环稳定性.

主要成果:

该PB@CNT复合材料形成了一个3D导电网络,具有增强的晶体性和界面粘合.
PB@CNT-1.0表现出高放电能力 (160.2 mAh g-1 在100 mA g-1 处) 和出色的速率性能.
在450个循环后实现了82.1%的容量保留,超过了未使用过的PB电极.
动力分析表明,主导的扩散控制机制具有降低的电荷转移电阻.

结论:

CNTs和PB的协同效应显著改善了电子导电性和结构稳定性.
开发的PB@CNT复合材料为高性能离子电池提供了一个有前途的阴极材料.
这项工作为设计用于储能应用的先进的普鲁士蓝基阴极提供了有效的策略.

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