Mechanism of lithium electrodeposition in a magnetic field
Huang, Yuanqi; Wu, Xinsheng; Nie, Lu; Chen, Shaojie; Sun, Zhetao; He, Yingjie; Liu, Wei
Source PublicationSolid State Ionics
AbstractLithium metal anode is a promising anode for next-generation lithium-based batteries. However, the lithium dendrite growth due to uneven Li-ion deposition could cause safety problem, and the unceasing formation of solid electrolyte interphase layer leads to capacity fading of anode. Here, we report a mechanism of Li electrodeposition under a magnetic field with the direction perpendicular or parallel to electric field in the cell systematically. We for the first time observe that at the initial nuclei stage the deposited Li metal is needlelike; for the later growth stage, a very compact deposits with dendrite-free structure can be obtained. Compared with perpendicular magnetic field, the parallel one can facilitate more uniform and dense lithium growth. The Lorentz force and the electric field force during Li platting are calculated and compared. It also indicates that the magnetic field can contribute to a smooth Li deposits after cycling at various current densities and deposited capacities. The polarization of the Li symmetrical cells is reduced in the magnetic field resulting in more stable cycling performance. In addition, improved electrochemical performance of the Li|LiCoO2 half cells can be achieved by applying a magnetic field. The study demonstrates that the electromagnetic environment is critical to stabilizing Li-metal anode in high-energy-rechargeable batteries.
© 2019 Elsevier B.V.
Indexed ByEI ; SCI
Funding ProjectShanghaiTech University[] ; National Natural Science Foundation of China[21805185]
PublisherElsevier B.V.
EI Accession Number20195007810118
EI KeywordsAnodes ; Deposits ; Electric fields ; Electrodeposition ; Lithium ; Lithium deposits ; Lithium-ion batteries ; Solid electrolytes
EI Classification NumberLight Metal Mines:504.1 ; Electroplating:539.3.1 ; Lithium and Alloys:542.4 ; Electricity: Basic Concepts and Phenomena:701.1 ; Magnetism: Basic Concepts and Phenomena:701.2 ; Electron Tubes:714.1 ; Chemical Agents and Basic Industrial Chemicals:803
Original Document TypeJournal article (JA)
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Document Type期刊论文
Corresponding AuthorLiu, Wei
AffiliationSchool of Physical Science and Technology, ShanghaiTech University, Shanghai; 201210, China
First Author AffilicationSchool of Physical Science and Technology
Corresponding Author AffilicationSchool of Physical Science and Technology
First Signature AffilicationSchool of Physical Science and Technology
Recommended Citation
GB/T 7714
Huang, Yuanqi,Wu, Xinsheng,Nie, Lu,et al. Mechanism of lithium electrodeposition in a magnetic field[J]. Solid State Ionics,2020,345.
APA Huang, Yuanqi.,Wu, Xinsheng.,Nie, Lu.,Chen, Shaojie.,Sun, Zhetao.,...&Liu, Wei.(2020).Mechanism of lithium electrodeposition in a magnetic field.Solid State Ionics,345.
MLA Huang, Yuanqi,et al."Mechanism of lithium electrodeposition in a magnetic field".Solid State Ionics 345(2020).
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10.1016@j.ssi.2019.1(3205KB)期刊论文未知限制开放UnknownApplication Full Text
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