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Synthesis of submicron-sized NiPS3 particles and electrochemical properties as active materials in all-solid-state lithium batteries
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| Title: | Synthesis of submicron-sized NiPS3 particles and electrochemical properties as active materials in all-solid-state lithium batteries |
| Authors: | Suto, Yusaku Browse this author | | Fujii, Yuta Browse this author | | Miura, Akira Browse this author →KAKEN DB | | Rosero-Navarro, Nataly Carolina Browse this author | | Higuchi, Mikio Browse this author | | Tadanaga, Kiyoharu Browse this author |
| Keywords: | All-solid-state lithium secondary battery | | Sulfide |
| Issue Date: | Jul-2018 |
| Publisher: | 社団法人 日本セラミックス協会 |
| Journal Title: | Journal of the Ceramic Society of Japan |
| Volume: | 126 |
| Issue: | 7 |
| Start Page: | 568 |
| End Page: | 572 |
| Publisher DOI: | 10.2109/jcersj2.18011 |
| Abstract: | Submicron-sized NiPS3 particles were synthesized by heating fine Ni powder (<100 nm), red phosphorus, and sulfur at 673 K for 48 h, and their electrochemical properties as cathodes in sulfide-based all-solid-state lithium batteries were investigated using discharge/charge measurements, X-ray diffraction (XRD) measurements, electrochemical impedance spectroscopy, and X-ray absorption near-edge structure spectroscopy (XANES). Batteries using submicron-sized NiPS3 as a cathode active material exhibited a 10th discharge capacity of 147 mAh g(-1) , which was larger than that obtained with 10-100 micron-sized NiPS3 (similar to 90 mAh g(-1)). The XRD patterns of the composite cathode before and after discharge/charge suggested that Li4P2S6 was formed irreversibly (2NiPS(3) + 4Li(+) + 4e(-) -> Li4P2S6 + 2Ni), and this irreversible reaction would reduce the capacity of the cathode. The XANES spectra suggested the oxidation/reduction of Ni during discharge-charge cycles, but the change in the spectra during the cycles was considerably small if one assumed the oxidation/reduction of Ni2+/Ni-0. (C) 2018 The Ceramic Society of Japan. All rights reserved. |
| Rights: | https://creativecommons.org/licenses/by-nd/4.0/ |
| Type: | article |
| URI: | http://hdl.handle.net/2115/71347 |
| 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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