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Fe-P-S electrodes for all-solid-state lithium secondary batteries using sulfide-based solid electrolytes
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| Title: | Fe-P-S electrodes for all-solid-state lithium secondary batteries using sulfide-based solid electrolytes |
| Authors: | Fujii, Yuta Browse this author | | Kobayashi, Misaki Browse this author | | Miura, Akira Browse this author →KAKEN DB | | Rosero-Navarro, Nataly Carolina Browse this author | | Li, Minchan Browse this author | | Sun, Jianguo Browse this author | | Kotobuki, Masashi Browse this author | | Lu, Li Browse this author | | Tadanaga, Kiyoharu Browse this author |
| Keywords: | Lithium-sulfur battery | | All-solid-state battery | | Fe-based composite cathode material | | High-capacity electrode |
| Issue Date: | 15-Feb-2020 |
| Publisher: | Elsevier |
| Journal Title: | Journal of power sources |
| Volume: | 449 |
| Start Page: | 227576 |
| Publisher DOI: | 10.1016/j.jpowsour.2019.227576 |
| Abstract: | Although lithium-sulfur batteries are expected to be the next-generation high-capacity battery of choices, the sulfur electrodes studied so far contain large amounts (typically 30-60 wt%) of carbon additives, resulting in low energy density. In this study, an Fe-P-S-based material is prepared and characterized for the use as a sulfur electrode with a low content of carbon additives. The electrode material based on Fe-P-S is synthesized by the mechanical milling of FePS3 and elemental sulfur. The ball-milled 70FePS(3)center dot 30S (wt%) electrode comprises FeS2 particles of similar to 30 nm in size and amorphous P-S. The all-solid-state battery operated at 100 degrees C exhibits a reversible capacity of more than 625 mAh g(-1) for 50 cycles at 0.51 mA cm(-2) (similar to 0.1C) in spite of the low carbon content (2 wt%) in the electrode. During the discharge-charge cycle, the sulfur component is confirmed to be both reduced and oxidized, cyclically. |
| Rights: | © 2020. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ | | http://creativecommons.org/licenses/by-nc-nd/4.0/ |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/84177 |
| Appears in Collections: | 工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 三浦 章
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