Ultrastable Interfacial Contacts Enabling Unimpeded Charge Transfer and Ion Diffusion in Flexible Lithium-Ion Batteries

doi:10.1002/advs.202105419

IMR OpenIR

	Ultrastable Interfacial Contacts Enabling Unimpeded Charge Transfer and Ion Diffusion in Flexible Lithium-Ion Batteries
	Shi, Ying 1,2; Wang, Zhenxing 2,3; Wen, Lei 3; Pei, Songfeng 3; Chen, Ke 3,4; Li, Hucheng 3; Cheng, Hui-Ming 3,5; Li, Feng 3
通讯作者	Li, Feng(fli@imr.ac.cn)
	2022-02-02
发表期刊	ADVANCED SCIENCE
页码	9
摘要	Deteriorating interfacial contact under mechanical deformation induces large cracks and high charge transfer resistance, resulting in a severe capacity fading of flexible lithium-ion batteries (LIBs). Herein, an oxygen plasma treatment on a polymer separator combined with high-speed centrifugal spraying to construct ultrastable interfacial contacts is reported. With the treatment, abundant hydrophilic oxygen-containing functional groups are produced and ensure strong chemical adhesion between the separator and the active materials. With single walled carbon nanotubes (SWCNTs) sprayed onto the active materials, a dense thin film is formed as the current collector. Meanwhile, the centrifugal force caused by high-speed rotation together with van der Waals forces under fast evaporation produces a much closer interface between the current collector and the active materials. As a result of this ultrastable interfacial interaction, the integrated electrode shows no structural failure after 5000 bending cycles with the charge-transfer resistance as low as 35.8% and a Li-ion diffusion coefficient nearly 19 times of the untreated electrode. Flexible LIBs assembled with these integrated electrodes show excellent structural and electrochemical stability, and can work steadily under various deformed states and repeated bending. This work provides a new technique toward rational design of electrode configuration for flexible LIBs.
关键词	flexible lithium-ion batteries high-speed centrifugal spraying integrated electrodes interfacial contact O-2 plasma
资助者	National Natural Science Foundation of China ; LiaoNing Revitalization Talents Program
DOI	10.1002/advs.202105419
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[51902316] ; National Natural Science Foundation of China[51872295] ; National Natural Science Foundation of China[51525206] ; LiaoNing Revitalization Talents Program[XLYC1908015]
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science
WOS类目	Chemistry, Multidisciplinary ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS记录号	WOS:000749550700001
出版者	WILEY
引用统计	被引频次：17[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/173605
专题	中国科学院金属研究所
通讯作者	Li, Feng
作者单位	1.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 2.Ji Hua Lab, Foshan 528000, Guangdong, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 4.Shanghai Tech Univ, Sch Phys Sci & Technol, Shanghai 201210, Peoples R China 5.Chinese Acad Sci, Shenzhen Inst Adv Technol, Inst Technol Carbon Neutral, Shenzhen 518055, Peoples R China
推荐引用方式 GB/T 7714	Shi, Ying,Wang, Zhenxing,Wen, Lei,et al. Ultrastable Interfacial Contacts Enabling Unimpeded Charge Transfer and Ion Diffusion in Flexible Lithium-Ion Batteries[J]. ADVANCED SCIENCE,2022:9.
APA	Shi, Ying.,Wang, Zhenxing.,Wen, Lei.,Pei, Songfeng.,Chen, Ke.,...&Li, Feng.(2022).Ultrastable Interfacial Contacts Enabling Unimpeded Charge Transfer and Ion Diffusion in Flexible Lithium-Ion Batteries.ADVANCED SCIENCE,9.
MLA	Shi, Ying,et al."Ultrastable Interfacial Contacts Enabling Unimpeded Charge Transfer and Ion Diffusion in Flexible Lithium-Ion Batteries".ADVANCED SCIENCE (2022):9.