Adaptive ion diffusion in a highly crystalline pure polymer for stable solid-state batteries

doi:10.1016/j.ensm.2024.103941

IMR OpenIR

	Adaptive ion diffusion in a highly crystalline pure polymer for stable solid-state batteries
	Xu, Shengjun 1,2; Zhang, Kexin 1,2; Xu, Ruogu 1,2; Tang, Pei 1,2; Cheng, Hui-Ming 1,3; Sun, Zhenhua 1,2; Li, Feng 1,2
通讯作者	Sun, Zhenhua(zhsun@imr.ac.cn) ; Li, Feng(fli@imr.ac.cn)
	2025
发表期刊	ENERGY STORAGE MATERIALS
ISSN	2405-8297
卷号	74 页码:10
摘要	Solid polymer electrolytes are typically designed to be amorphous and ion-rich, with fillers added to enhance ion conduction. However, lithium filament growth within these electrolytes poses a significant risk of battery failures. Here, we present findings on adaptive ion diffusion phenomena in highly crystalline, ion-free bulk poly (ethylene oxide) (PEO), involving ions such as Li+, Na+, K+, Mg2+, Zn2+, and Al3+. We developed a steady-state measurement method (SSMM) that overcomes the limitations of traditional electrochemical impedance spectroscopy, enabling the precise quantification of the adaptive diffusion coefficients in bulk PEO at various temperatures. Physicochemical and electrochemical characterizations reveal that continuous ion transport channels form through adaptive ion diffusion in bulk PEO while maintaining high crystallinity. Building on these characteristics, we proposed a solid-state electrolyte group (SSE-Group) using highly crystalline bulk PEO as an interlayer without adding fillers. This SSE-Group configuration suppresses the soft breakdown caused by lithium filament growth, improving cycle stability from 20 to 2500 h at 0.2 mA cm(-2) in symmetrical lithium cells and enabling stable cycling for over 2000 cycles at 1C in solid-state batteries. Our findings enhance the understanding of adaptive ion diffusion and dendrite suppression in highly crystalline polymers, with the potential to improve the efficiency and safety of energy storage devices.
关键词	Adaptive ion diffusion Polyethylene oxide Polymer electrolytes Lithium filaments Solid-state batteries
资助者	National Natural Science Foundation of China ; National Key R & D Program of China
DOI	10.1016/j.ensm.2024.103941
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[22379151] ; National Natural Science Foundation of China[51972313] ; National Natural Science Foundation of China[52020105010] ; National Natural Science Foundation of China[51927803] ; National Natural Science Foundation of China[52188101] ; National Key R & D Program of China[2021YFB2800200] ; National Key R & D Program of China[2021YFB3800301]
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science
WOS类目	Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS记录号	WOS:001374697700001
出版者	ELSEVIER
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/181381
专题	中国科学院金属研究所
通讯作者	Sun, Zhenhua; Li, Feng
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 3.Chinese Acad Sci, Shenzhen Inst Adv Technol, Shenzhen Key Lab Energy Mat Carbon Neutral, Shenzhen 518055, Peoples R China
推荐引用方式 GB/T 7714	Xu, Shengjun,Zhang, Kexin,Xu, Ruogu,et al. Adaptive ion diffusion in a highly crystalline pure polymer for stable solid-state batteries[J]. ENERGY STORAGE MATERIALS,2025,74:10.
APA	Xu, Shengjun.,Zhang, Kexin.,Xu, Ruogu.,Tang, Pei.,Cheng, Hui-Ming.,...&Li, Feng.(2025).Adaptive ion diffusion in a highly crystalline pure polymer for stable solid-state batteries.ENERGY STORAGE MATERIALS,74,10.
MLA	Xu, Shengjun,et al."Adaptive ion diffusion in a highly crystalline pure polymer for stable solid-state batteries".ENERGY STORAGE MATERIALS 74(2025):10.