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The DOI matches its Crossref record; 28 of the 28 references it cites were found in a registry or an index.

Silicon Solid Electrolyte Interphase (SEI) of Lithium Ion Battery Characterized by Microscopy and Spectroscopy

Open access
Nie, Mengyun, Abraham, Daniel P., Chen, Yanjing, Bose, Arijit, Lucht, Brett L.·2013·The Journal of Physical Chemistry C

Abstract

The surface reactions of electrolytes with a silicon anode in lithium ion cells have been investigated. The investigation utilizes two novel techniques that are enabled by the use of binder-free silicon (BF-Si) nanoparticle anodes. The first method, transmission electron microscopy with energy dispersive X-ray spectroscopy, allows straightforward analysis of the BF-Si solid electrolyte interphase (SEI). The second method utilizes multi-nuclear magnetic resonance spectroscopy of D 2 O extracts from the cycled anodes. The TEM and NMR data are complemented by XPS and FTIR data, which are routinely used for SEI studies. Coin cells (BF-Si/Li) were cycled in electrolytes containing LiPF 6 salt and ethylene carbonate or fluoroethylene carbonate solvent. Capacity retention was significantly better for cells cycled with LiPF 6 /FEC electrolyte than for cells cycled with LiPF 6 /EC electrolyte. Our unique combination of techniques establishes that for LiPF 6 /EC electrolyte the BF-Si SEI continuously grows during the first 20 cycles and the SEI becomes integrated with the BF-Si nanoparticles. The SEI predominantly contains lithium ethylene dicarbonate, LiF, and Li x SiO y . BF-Si electrodes cycled with LiPF 6 /FEC electrolyte have a different behavior; the BF-Si nanoparticles remain relatively distinct from the SEI. The SEI predominantly contains LiF, Li x SiO y, and an insoluble polymeric species.

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Crossref · 10.1021/jp404155y

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Metadata

Authors
Nie, M., Abraham, D. P., Chen, Y., Bose, A., & Lucht, B. L.
Venue
The Journal of Physical Chemistry C
Published
2013-06-19
Volume
117
Issue
26
Pages
13403-13412
ISSN
  • 1932-7447 (ISSN-L)
  • 1932-7455
OpenAlex
W2051699520
Cited by
578
References
28
FWCI
23.76
Type
journal article
Language
en
Open access
green

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