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Self-healing composite solid electrolytes with enhanced Li+ transport and mechanical properties for safe lithium metal batteries

Li, Jiajia1,2; Yang, Lipeng2; Zhang, Haitao2; Ji, Xiaoyan1
2022-06-15
Source PublicationCHEMICAL ENGINEERING JOURNAL
ISSN1385-8947
Volume438Pages:8
AbstractThe Li dendrites introduced by the inhomogeneous Li-ion flux are the barriers to the commercialization of solid -state lithium metal batteries (LMBs). Increasing the Li+ transference number and homogenizing the Li+ flux are two effective strategies to solve the aforementioned issues. Herein, a flexible composite solid electrolyte (CSE) with an enhanced Li+ transference number, high ionic conductivity, and self-healing function was synthesized via a simple template method. Boron nitride (BN) nanosheets with high specific surface area and richly porous structure were used as the passive inorganic filler, homogenizing the Li+ flux and facilitating the Li+ trans-mission. The flexible and self-healing features of the CSE reduced the interface resistance and considerably prolonged their cycling life. By exploiting stress-strain curves before and after healing, along with physical characterizations, the self-healing efficiency was obtained and the dendrite suppress mechanisms at the electrode/CSE interface were discussed. Finally, the assembled LiFePO4/Li cell with optimized CSE exhibited impressive cycling performance and delivered a steady discharge capacity up to 152 mA h g(-1) after 300 cycles at 0.1C. This universal strategy can be used in other emerging energy storage fields to boost high energy density and long cycling life.
KeywordSelf-healing Poly(ionic liquid)s Lithium metal batteries Ionic liquids
DOI10.1016/j.cej.2022.135418
Language英语
WOS KeywordPOLYMER ELECTROLYTES ; IONIC-CONDUCTIVITY ; LIQUID ; PERFORMANCE
Funding ProjectEU/Interreg Nord ; Region Norrbotten in Sweden[304-16169-2019] ; National Key Research and Development Program of China[2019YFA0705601] ; National Natural Science of China
WOS Research AreaEngineering
WOS SubjectEngineering, Environmental ; Engineering, Chemical
Funding OrganizationEU/Interreg Nord ; Region Norrbotten in Sweden ; National Key Research and Development Program of China ; National Natural Science of China
WOS IDWOS:000779738200005
PublisherELSEVIER SCIENCE SA
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/52637
Collection中国科学院过程工程研究所
Corresponding AuthorZhang, Haitao; Ji, Xiaoyan
Affiliation1.Lulea Univ Technol, Div Energy Sci, Energy Engn, S-97187 Lulea, Sweden
2.Chinese Acad Sci, Inst Proc Engn, Beijing Key Lab Ion Liquids Clean Proc, Beijing, Peoples R China
Recommended Citation
GB/T 7714
Li, Jiajia,Yang, Lipeng,Zhang, Haitao,et al.

Self-healing composite solid electrolytes with enhanced Li+ transport and mechanical properties for safe lithium metal batteries

[J]. CHEMICAL ENGINEERING JOURNAL,2022,438:8.
APA Li, Jiajia,Yang, Lipeng,Zhang, Haitao,&Ji, Xiaoyan.(2022).

Self-healing composite solid electrolytes with enhanced Li+ transport and mechanical properties for safe lithium metal batteries

.CHEMICAL ENGINEERING JOURNAL,438,8.
MLA Li, Jiajia,et al."

Self-healing composite solid electrolytes with enhanced Li+ transport and mechanical properties for safe lithium metal batteries

".CHEMICAL ENGINEERING JOURNAL 438(2022):8.
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