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Updated: Jun 14, 2025

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一种分层的多孔硬碳@Si@软碳材料,用于先进的离子电池

Dan Lv¹, Lili Yang¹, Runfeng Song¹

¹Key Laboratory of Advanced Ceramics and Machining Technology (Ministry of Education), School of Materials Science and Engineering, Tianjin University, Tianjin 300072, China.

Journal of colloid and interface science

|September 8, 2024

概括

这项研究引入了一种新的层次性多孔硬碳@@软碳材料,用于先进的离子电池. 新的阳极提供了高容量和更好的稳定性,解决了阳极的关键局限性.

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:

(Si) 阳极对下一代离子电池 (LIB) 是有前途的,因为其理论容量很高.
然而,由于阳极的体积扩大和电导率差,实际应用受到阻碍.

研究的目的:

为LIBs开发一种稳定,高性能的阳极材料.
通过复合结构减轻阳极的体积膨胀和导电性问题.

主要方法:

使用化学蒸汽沉积 (CVD) 和化,制造一个层次性的多孔硬碳@Si@软碳 (PHC@Si@SC) 复合材料.
调查烯沉积变化对容量和初始库伦比效率 (ICE) 的影响.
结合基衍生软碳来保护纳米和抑制体积膨胀.

主要成果:

该PHC@Si@SC阳极实现了1625mAhg-1的高容量,ICE为86.8%.
复合结构显示了硬和软碳组件之间的良好合作.
在100个循环后,在一个充满细胞中观察到55%的容量保留,具有具有挑战性的N/P比为1.1的N/P比.

结论:

开发的PHC@Si@SC材料提供了一种可行的策略,用于提高LIBs中的阳极性能.
复合结构有效地解决了的体积膨胀和导电性限制.
可扩展的制造方法表明了实际电池应用的潜力.

关键词:

阳极是一种极.硬碳是一种硬的碳.离子电池是一种离子电池.是一种,是一种.软碳是一种软碳.

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