| File | |
| Authors |
Domi, Yasuhiro
Department of Chemistry and Biotechnology, Graduate School of Engineering, Tottori University / Center for Research on Green Sustainable Chemistry, Tottori University
Researchers DB
KAKEN
Usui, Hiroyuki
Department of Chemistry and Biotechnology, Graduate School of Engineering, Tottori University / Center for Research on Green Sustainable Chemistry, Tottori University
Researchers DB
KAKEN
Shindo, Yoshiko
Course of Chemistry and Biotechnology, Department of Engineering, Graduate School of Sustainability Science, Tottori University / Center for Research on Green Sustainable Chemistry, Tottori University
Yodoya, Shuhei
Course of Chemistry and Biotechnology, Department of Engineering, Graduate School of Sustainability Science, Tottori University / Center for Research on Green Sustainable Chemistry, Tottori University
Sato, Hironori
Course of Chemistry and Biotechnology, Department of Engineering, Graduate School of Sustainability Science, Tottori University / Center for Research on Green Sustainable Chemistry, Tottori University
Nishikawa, Kei
Center for Green Research on Energy and Environmental Materials, National Institute for Materials Science (NIMS)
Sakaguchi, Hiroki
Department of Chemistry and Biotechnology, Graduate School of Engineering, Tottori University / Center for Research on Green Sustainable Chemistry, Tottori University
Researchers DB
KAKEN
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| Keywords | Lithium-ion Battery
Negative Electrode
Composite
Ionic-liquid Electrolyte
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| Abstract | We investigated the applicability of ionic-liquid electrolytes to FeSi2/Si composite electrode for lithium-ion batteries. In conventional organic-liquid electrolytes, a discharge capacity of the electrode rapidly faded. In contrast, the electrode exhibited a superior cycle life with a reversible capacity of 1000 mA h g(Si)−1 over 850 cycles in a certain ionic-liquid electrolyte. The difference in the cycle life was explained by surface film properties. In addition, the rate performance of the FeSi2/Si electrode improved in another ionic-liquid electrolyte. Remarkably, lithiation of only Si in FeSi2/Si composite electrode occurred whereas each FeSi2- and Si-alone electrode alloyed with Li in the ionic-liquid electrolyte. FeSi2 certainly covered the shortcomings of Si and the FeSi2/Si composite electrode exhibited improved cycle life and rate capability compared to Si-alone electrode.
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| Publisher | The Electrochemical Society of Japan
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| Content Type |
Journal Article
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| Link | |
| ISSN | 13443542
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| EISSN | 21862451
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| Journal Title | ELECTROCHEMISTRY
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| Volume | 88
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| Issue | 6
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| Start Page | 548
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| End Page | 554
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| Published Date | 2020
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| Publisher-DOI | |
| Text Version |
Author
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| Rights | (C) The Author(s) 2020. Published by ECSJ.
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| Citation | Domi Yasuhiro, Usui Hiroyuki, Shindo Yoshiko, et al. Electrochemical Lithiation and Delithiation Properties of FeSi2/Si Composite Electrodes in Ionic-Liquid Electrolytes. ELECTROCHEMISTRY. 2020. 88(6). 548-554. doi:10.5796/electrochemistry.20-00091
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| Department |
Faculty of Engineering/Graduate School of Engineering
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| Language |
English
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| Web of Science Key ut | WOS:000587621000010
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