通过内源性兴奋剂对离子电池的高性能硬碳阳极进行介相化学的操纵
Hang Li1, Yuan Zhou2, Yutian Yang1
1School of Materials Science and Engineering, Key Laboratory of Electronic Packaging and Advanced Functional Materials of Hunan Province, Central South University, Changsha, 410083, Hunan, People's Republic of China.
Nano-micro letters
|March 10, 2026
概括
这项研究引入了固有N/S对离子电池硬碳 (HC) 阳极的内源N/S兴奋剂,通过优化相间化学和微观结构显著提高了初始库伦比效率 (ICE),循环稳定性和速率性能.
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:
- 离子电池中的硬碳 (HC) 阳极遭受初始库伦比效率 (ICE),循环稳定性和速率性能差的困扰.
- 这些局限性与相间化学和微观结构有关,阻碍了实际应用.
研究的目的:
- 开发一种策略来操纵HC阳极中的相间化学和微观结构.
- 通过内源性兴奋剂来提高离子电池HC阳极的性能.
主要方法:
- 利用由降低糖和氨基酸触发的梅拉德反应用于内源性N/S兴奋剂.
- 工程微结构设计和HC阳极的相间化学.
- 在离子电池配置中制造和测试HC阳极.
主要成果:
- 实现了无机丰富的固体电解质接口 (SEI) 层,加速离子运输和减少副作用反应.
- 在0.05 A g-1下展示了363 mAh g-1的可逆容量和卓越的循环稳定性 (在5.0 A g-1下在2500个循环中保持79%).
- 报告了89%的充足的ICE,以及在高质量负载的全细胞和囊细胞中表现出色.
结论:
- 内源N/S兴奋剂是一种有效的策略,可以同时解决HC阳极的关键性能限制.
- 开发的HC阳极显示出高性能离子电池的巨大潜力.
- 这种方法为设计先进的HC阳极材料提供了新的见解.
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