Lithium Permeation through Thin Lithium-Silicon Films for Battery Applications Investigated by Neutron Reflectometry

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Strauß, F.; Hüger, E.; Heitjans, P.; Geue, T.; Stahn, J.; Schmidt, H.: Lithium Permeation through Thin Lithium-Silicon Films for Battery Applications Investigated by Neutron Reflectometry. In: Energy Technology 4 (2016), Nr. 12, S. 1582-1587. DOI: https://doi.org/10.1002/ente.201600209

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Sum total of downloads: 114




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Abstract: 
In the ongoing search for new negative electrode materials for lithium-ion batteries, amorphous silicon with a theoretical specific capacity of almost 4000 mA h g−1 is still one of the most promising candidates. In order to optimize cycling behavior, prelithiation of silicon is discussed as possible solution. Yet, little is known about kinetics in the Li-Si system, especially with a low lithium content. Using neutron reflectometry as a tool, lithium permeation through amorphous LixSi layers was probed during annealing. From the results a lithium permeability (diffusivity×solubility) of P=(3.3±0.9)×10−21 m2 s−1 is derived for LixSi (x≈0.1), which is identical to that of pure amorphous silicon.
License of this version: CC BY-NC 4.0 Unported
Document Type: article
Publishing status: publishedVersion
Issue Date: 2016
Appears in Collections:Naturwissenschaftliche Fakultät

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1 image of flag of Germany Germany 92 80.70%
2 image of flag of China China 7 6.14%
3 image of flag of United States United States 6 5.26%
4 image of flag of Indonesia Indonesia 2 1.75%
5 image of flag of France France 2 1.75%
6 image of flag of No geo information available No geo information available 1 0.88%
7 image of flag of Korea, Republic of Korea, Republic of 1 0.88%
8 image of flag of Europe Europe 1 0.88%
9 image of flag of Algeria Algeria 1 0.88%
10 image of flag of Switzerland Switzerland 1 0.88%

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