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液相填充碳与高性能储备用于离子电池的离子电池

Jinting Li¹, Nurbiye Sawut¹, Kean Chen¹

¹College of Chemistry and Molecular Sciences, Hubei Key Laboratory of Electrochemical Power Sources, Wuhan University, Wuhan, 430072, P. R. China.

Small (Weinheim an der Bergstrasse, Germany)

|July 24, 2025

概括

一种新的液相填充方法增强了离子电池 (SIB) 的硬碳阳极. 这种可扩展的技术提高了储存能力和长期稳定性,为先进的电池材料铺平了道路.

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:

硬碳 (HC) 是离子电池 (SIB) 的主要阳极材料.
优化HC的层孔结构对于提高储存性能至关重要.
现有的HC改造方法可能很复杂或难以扩展.

研究的目的:

开发一种简单,具有成本效益和可扩展的方法来提高SIB的HC阳极性能.
研究液相填充策略对HC的结构性质和电化学性能的影响.
为了证明开发的HC材料在高性能储存方面的潜力.

主要方法:

采用液相填充方法,涉及填充生物质衍生活性碳与石墨类微晶前体.
然后,填充材料经过高温碳化,产生液相填充碳 (LPFC).
使用通过这种方法准备的HC电极评估了电化学性能,包括容量,库伦比效率和循环稳定性.

主要成果:

液相填充处理成功重建了HC的石墨状层结构.
准备好的HC电极在20mAg-1下表现出382.4mAhg-1的高储能,初始库伦比效率为82.8%.
实现了优异的长期循环稳定性,在50mAg-1的200个循环后达到314.7mAhg-1和在200mAg-1的1000个循环后保持75.0%的容量.

结论:

液相填充策略是一种有效和可扩展的方法,用于生产SIB的高性能硬碳阳极.
这种方法为大规模制备用于下一代能源存储的先进阳极材料提供了有前途的途径.
增强的结构性质大大有助于提高储能和循环寿命.

关键词:

封闭的毛孔封闭的毛孔像图形一样的域名.硬碳是一种硬的碳.离子电池是一种离子电池.

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