CAS OpenIR
Diffusion Enhancement to Stabilize Solid Electrolyte Interphase
Chen, Yunyi1,2; Huang, Haoyang1,2; Liu, Lingli3; Chen, Yongxiu4; Han, Yongsheng1,2
2021-09-21
Source PublicationADVANCED ENERGY MATERIALS
ISSN1614-6832
Pages9
AbstractThe damage of the solid electrolyte interphase (SEI) layer during the stripping process in lithium secondary batteries causes the reduction of energy density. The stabilization of the solid electrolyte interphase is as important as the inhibition of lithium dendrites for lithium-based batteries. But the former is largely underestimated, which leads to the unclear damage mechanism and the lack of effective solutions to suppress the damage. Here, in this paper a diffusion-limited damage mechanism of the SEI layer is proposed. The inhomogeneity of the SEI layer results in region-dependent diffusion kinetics of lithium ions (Li+) passing through the layer. The slip lines and kinks having a thicker SEI layer, show slower Li+ conduction than the smooth surface. The uneven stripping process leads to the formation of cracks at the boundary between the slip lines and the smooth surface, which further causes collapse and serious damage of SEI. Upon this assumption, it is proposed to enhance the diffusion of Li+ at the local areas of SEI layer by applying parallel magnetic fields on the outside of electrodes. Both the electrochemical characterizations and long-term stability examination confirm the effectiveness of the magnetic field in enhancing the diffusion of Li+ and suppressing the damage of SEI.
Keyworddiffusion enhancement lithium-metal anodes lithium stripping magnetic field solid electrolyte interphase
DOI10.1002/aenm.202101774
Language英语
WOS KeywordLITHIUM METAL ANODE ; CHEMICAL DIFFUSION ; MECHANISMS ; DENDRITES
Funding ProjectNational Natural Science Foundation of China[91934302] ; National Natural Science Foundation of China[21978298] ; National Natural Science Foundation of China[U1862117] ; Innovation Academy for Green Manufacture, Chinese Academy of Sciences[IAGM-2019-A13] ; State Key Laboratory of Multiphase Complex Systems[MPCS-2019-D-12]
WOS Research AreaChemistry ; Energy & Fuels ; Materials Science ; Physics
WOS SubjectChemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter
Funding OrganizationNational Natural Science Foundation of China ; Innovation Academy for Green Manufacture, Chinese Academy of Sciences ; State Key Laboratory of Multiphase Complex Systems
WOS IDWOS:000697483600001
PublisherWILEY-V C H VERLAG GMBH
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/50212
Collection中国科学院过程工程研究所
Corresponding AuthorHan, Yongsheng
Affiliation1.Chinese Acad Sci, State Key Lab Multiphase Complex Syst, Inst Proc Engn, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Sch Chem Engn, Beijing 100049, Peoples R China
3.Hefei Univ, Sch Energy Mat & Chem Engn, Hefei 230601, Peoples R China
4.Univ Birmingham, Sch Met & Mat, Birmingham BT15 2TT, W Midlands, England
Recommended Citation
GB/T 7714
Chen, Yunyi,Huang, Haoyang,Liu, Lingli,et al. Diffusion Enhancement to Stabilize Solid Electrolyte Interphase[J]. ADVANCED ENERGY MATERIALS,2021:9.
APA Chen, Yunyi,Huang, Haoyang,Liu, Lingli,Chen, Yongxiu,&Han, Yongsheng.(2021).Diffusion Enhancement to Stabilize Solid Electrolyte Interphase.ADVANCED ENERGY MATERIALS,9.
MLA Chen, Yunyi,et al."Diffusion Enhancement to Stabilize Solid Electrolyte Interphase".ADVANCED ENERGY MATERIALS (2021):9.
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