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[1]黄 睿,邓惠玲,张彩芸,等.锂负极保护层的原位构筑及界面调控研究[J].武汉工程大学学报,2026,48(03):296-301+328.[doi:10.19843/j.cnki.CN42-1779/TQ.202512013]
　HUANG Rui,DENG Huiling,ZHANG Caiyun,et al.In situ construction of protective layer for lithium metal anode and its interfacial regulation mechanism[J].Journal of Wuhan Institute of Technology,2026,48(03):296-301+328.[doi:10.19843/j.cnki.CN42-1779/TQ.202512013]
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锂负极保护层的原位构筑及界面调控研究
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《武汉工程大学学报》[ISSN:1674-2869/CN:42-1779/TQ]

卷:
48
期数:
2026年03期
页码:
296-301+328
栏目:
现代大化工
出版日期:
2026-06-30

文章信息/Info

Title:
In situ construction of protective layer for lithium metal anode and
its interfacial regulation mechanism
文章编号:
1674 - 2869（2026）03 - 0296 - 06
作者:
黄 睿; 邓惠玲; 张彩芸; 王照云; 赵恩助; 严 敏*
武汉工程大学材料科学与工程学院，湖北 武汉 430205
Author(s):

School of Materials Science and Engineering，Wuhan Institute of Technology，Wuhan 430205，China
关键词:
锂金属负极; 固体电解质界面; 原位聚合; 锂枝晶; 界面调控机制
Keywords:
分类号:
TB322
DOI:
10.19843/j.cnki.CN42-1779/TQ.202512013
文献标志码:
A
摘要:
针对高比能锂金属电池中锂金属负极面临的枝晶严重生长、固体电解质界面（SEI）膜不稳定及体积膨胀剧烈等关键问题，提出了一种简便高效的原位光聚合策略：利用聚(乙二醇）二丙烯酸酯(PEGDA)和双三氟甲烷磺酰亚胺锂(LiTFSI)在锂金属负极表面原位构建了一层锂负极保护层PEGDA-LiTFSI（PL）。通过傅里叶变换红外光谱、扫描电子显微镜等表征证实，PL有效适应了锂金属负极在沉积/剥离过程中的体积变化，增强了电解液/负极界面稳定性，同时，抑制了锂枝晶的无序生长，有效阻断了电解液与活性锂之间的持续副反应。电化学性能测试显示，PL有效降低成核过电位与局部电流密度，从而实现均匀、稳定的锂沉积/剥离过程，在Li||Li对称电池中实现了超过1 200 h的稳定循环，表现出卓越的稳定性。与磷酸铁锂电极组装的全电池，在1.0 C倍率下循环300圈后比容量保持率高达95%，且在4.0 C的高倍率下仍能保持较高的放电比容量。
Abstract:
To address key challenges associated with lithium metal anodes in high-energy-density batteries，including severe dendrite growth，unstable solid electrolyte interphase （SEI），and substantial volume expansion，in this study, we proposed a simple and efficient in situ photopolymerization strategy——a protective layer （PL） was constructed in situ on the lithium metal anode surface using poly (ethylene glycol） diacrylate (PEGDA) and lithium bis(trifluoromethanesulfonyl)imide (LiTFSI). Characterization via Fourier transform infrared spectroscopy and scanning electron microscopy confirmed that the PL effectively accommodated volume changes during lithium plating/stripping and enhanced the stability of the electrolyte/anode interface. Moreover，the PL inhibited disordered lithium dendrite growth and blocked continuous side reactions between the electrolyte and active lithium. Electrochemical evaluations revealed that the PL effectively reduced nucleation overpotential and local current density，thereby promoting uniform and stable lithium plating/stripping. Symmetric Li||Li cells incorporating the PL achieved stable cycling for over 1 200 h，exhibiting excellent stability. And full cells assembled with LiFePO4 cathodes retained 95% of their initial specific capacity after 300 cycles at 1.0 C and maintained a high discharge specific capacity even at a high rate of 4.0 C.

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相似文献/References:

备注/Memo

备注/Memo:
收稿日期：2025-12-23
基金项目：国家自然科学基金（22409150）；武汉市自然科学基金探索计划（晨光计划）（2024040801020326）；武汉工程大学研究生教育创新基金（CX2025098）
作者简介：黄 睿，硕士研究生。Email：ilyhr2002@163.com
*通信作者：严 敏，博士，副教授。Email：yanmin@wit.edu.cn
更新日期/Last Update: 2026-06-26