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Updated: Jun 8, 2026

Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques

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Published on: November 11, 2013

对硬碳阳极的封闭孔形成和均SEI进行操纵,以实现高度可逆的储存

Zhanxu Zheng¹, Bingying Pei¹, Dazhi Shen¹

¹School of Materials Science and Engineering, Central South University, Changsha, Hunan, 410083, China.

Small (Weinheim an der Bergstrasse, Germany)

|October 30, 2025

概括

这项研究引入了用于离子电池的新型硬/软碳材料,提高了最初的库伦比克效率和稳定性. 新的阳极设计提高了实际应用的储存性能.

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
储能储能储能储能储能储能

背景情况:

离子电池 (SIB) 的硬碳 (HC) 阳极由于不稳定的固体电解质介相 (SEI) 形成,因此具有较低的初始库伦比效率 (ICE).
软碳 (SC) 阳极提供更光滑的表面,促进有序的SEI生长,但具有较差的储存性能.

研究的目的:

通过将SC的优势与HC的优势相结合,开发一种新的硬/软碳异构接口材料 (x-SMCC).
通过优化SEI形成和储存,提高SIB的HC阳极的电化学性能.

主要方法:

通过微晶纤维素和ylene-3,4,9,10-tetracarboxylic dianhydride的一步热水联合组装合成了x-SMCC,随后进行了受控的碳化.
在SC集成后研究HC接口的结构修改和表面重建.
评估了电化学性能,包括可逆容量,ICE和循环稳定性.

主要成果:

经过优化后的5-SMCC显示出353.98 mAh g-1的高可逆容量,在30 mA g-1.1时可逆容量为353.98 mAh g-1.
由于引导集群形成和更平滑的SEI,实现了84.52%的增强ICE.
在1.5 A g-1的1000个循环后保留了78%的初始容量,表明了出色的循环稳定性.

结论:

硬/软碳异构接口材料有效利用互补性质,提高SIB阳极性能.
这种结构工程策略为开发具有成本效益的HC阳极和设计缺陷工程碳酸性材料提供了可行的途径.

关键词:

硬/软碳是什么意思异面接口是异面接口.微观结构的微观结构在离子电池中使用.固体 - 电解质接口接口

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