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Ultrastable Interfacial Contacts Enabling Unimpeded Charge Transfer and Ion Diffusion in Flexible Lithium-Ion Batteries
Shi, Ying1,2; Wang, Zhenxing2,3; Wen, Lei3; Pei, Songfeng3; Chen, Ke3,4; Li, Hucheng3; Cheng, Hui-Ming3,5; Li, Feng3
Corresponding AuthorLi, Feng(fli@imr.ac.cn)
2022-02-02
Source PublicationADVANCED SCIENCE
Pages9
AbstractDeteriorating 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.
Keywordflexible lithium-ion batteries high-speed centrifugal spraying integrated electrodes interfacial contact O-2 plasma
Funding OrganizationNational Natural Science Foundation of China ; LiaoNing Revitalization Talents Program
DOI10.1002/advs.202105419
Indexed BySCI
Language英语
Funding ProjectNational 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 Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science
WOS SubjectChemistry, Multidisciplinary ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS IDWOS:000749550700001
PublisherWILEY
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/173605
Collection中国科学院金属研究所
Corresponding AuthorLi, Feng
Affiliation1.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
Recommended Citation
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.
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