This title appears in the Scientific Report :
2020
Please use the identifier:
http://hdl.handle.net/2128/25946 in citations.
Please use the identifier: http://dx.doi.org/10.1134/S1027451020070368 in citations.
Combining SANS and VSANS to Extend Q-Range for Morphology Investigation of Silicon-Graphite Anodes
Combining SANS and VSANS to Extend Q-Range for Morphology Investigation of Silicon-Graphite Anodes
Silicon-based electrodes are attractive candidates as anodes for Li-ion batteries due to their high theoretical specific capacity. However, repeated lithiation/delithiation causes significant morphological changes of the silicon particles which results in formation of highly porous silicon structur...
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Personal Name(s): | Paul, N. (Corresponding author) |
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Frielinghaus, H. / Busch, Sebastian / Pipich, V. / Gilles, R. | |
Contributing Institute: |
Heinz Maier-Leibnitz Zentrum; MLZ Neutronenstreuung; JCNS-1 JCNS-FRM-II; JCNS-FRM-II |
Published in: | Surface investigation, x-ray, synchrotron and neutron techniques, 14 (2020) S1, S. S156 - S160 |
Imprint: |
New York, NY
Gordon and Breach
2020
|
DOI: |
10.1134/S1027451020070368 |
Document Type: |
Journal Article |
Research Program: |
FRM II / MLZ Jülich Centre for Neutron Research (JCNS) |
Subject (ZB): | |
Link: |
OpenAccess Restricted OpenAccess Restricted |
Publikationsportal JuSER |
Please use the identifier: http://dx.doi.org/10.1134/S1027451020070368 in citations.
Silicon-based electrodes are attractive candidates as anodes for Li-ion batteries due to their high theoretical specific capacity. However, repeated lithiation/delithiation causes significant morphological changes of the silicon particles which results in formation of highly porous silicon structures and severe side reactions at the silicon/electrolyte interface. To quantify such morphological changes in the micrometer as well as on the nanometer scale, we combine very small-angle neutron scattering (VSANS) and small-angle neutron scattering (SANS) techniques. While conventional and contrast-matched SANS data provide insights into the solid-electrolyte-interphase (SEI) coverage around the silicon particles and filling of the evolving porosity within the electrode, VSANS data provide information on the micrometer-sized graphite particles. |