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通过超稳定的碳阳极实现快速充电和长周期离子电池

Honglei Jiang¹, Zhiqin Sun¹, Pei Liu¹

¹Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), State Key Laboratory of Advanced Chemical Power Sources, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), College of Chemistry, Nankai University, Tianjin, 300071, China.

Advanced materials (Deerfield Beach, Fla.)

|September 3, 2025

概括

研究人员开发了一种用于离子电池 (SIB) 的新型等级阳极材料. 这种先进的阳极能实现快速充电和极高的功率密度,

科学领域:

材料科学
电化学
能量储存

背景情况:

离子电池 (SIB) 是电动汽车离子电池的一个有希望的替代品.
目前SIB的碳酸阳极受到缓慢的离子传输和界面不稳定性的影响,限制了它们的速率能力.
开发高性能阳极材料对于推进SIB技术至关重要.

研究的目的:

设计和合成用于快速充电SIB的等级阳极材料.
在离子扩散和稳定性方面克服传统碳阳极的局限性.
提高电动汽车应用的SIB功率密度和循环稳定性.

主要方法:

通过用g-C3N4层涂覆空心碳球来制造层次性阳极材料 (CN@HCS).
系统地研究了CN@HCS阳极的结构和电化学特性.
评估电池的完整性能,重点是充电速度,放电时间和功率密度.

主要成果:

层次的CN@HCS阳极显著改善了Na+扩散和抑制了副作用.
这种材料表现出极好的速度能力,在40 A g-1下保持高性能.
在 40,000 个循环中实现了异常的循环稳定性,容量衰减是可以忽略的.

结论:

开发的CN@HCS阳极代表了快速充电SIB的重大进步.
这种新型结构增强了离子传输和界面稳定性,从而提高了电化学性能.
这项工作为适用于下一代电动汽车的高功率密度SIB铺平了道路.

关键词:

碳阳极快速充电接口工程长周期稳定性离子电池

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