High-capacity CVD-grown Ge nanowire anodes for lithium-ion batteries: simple chemical etching approach for oxide removal
DC Field | Value | Language |
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dc.contributor.author | Kim, Pangil | - |
dc.contributor.author | Chen, Tao | - |
dc.contributor.author | Song, Seunghyun | - |
dc.contributor.author | Jevasuwan, W. | - |
dc.contributor.author | Lee, Churl Seung | - |
dc.contributor.author | Fukata, N. | - |
dc.contributor.author | Bae, Joonho | - |
dc.date.available | 2021-02-26T03:40:22Z | - |
dc.date.created | 2021-01-20 | - |
dc.date.issued | 2021-01 | - |
dc.identifier.issn | 0957-4522 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/80039 | - |
dc.description.abstract | We demonstrated high-performance Ge nanowire (NWs) anodes for rechargeable lithium-ion batteries with high-capacity and high coulombic efficiency. The NWs were prepared using a simple chemical vapor deposition (CVD) method, which is favorable for the mass production of electrodes. The unstable oxides of Ge deteriorate the electrochemical characteristics of the batteries made from Ge-based anodes. To resolve the issue of the oxides and enhance the electrochemical performance, the oxides of the NWs were removed efficiently by a simple wet chemical etching method via a 10% HCl (aq) treatment. Transmission electron microscopy and energy-dispersive X-ray spectroscopy elemental mapping verified the removal of oxides. Charge and discharge capacity of the pristine NWs were 833.803 mAhg−1 and 650.63 mAhg−1 at first cycle. In comparison, the charge and discharge capacities after oxide removal were 1064.1 mAhg−1 and 905.6 mAhg−1 under the same conditions. The discharge capacity and coulombic efficiency of the oxide-removed NWs were 39.2% and 7.1% higher than those achieved without oxide removal. The coulombic efficiency of the oxide-removed NWs was higher than that of the pristine NWs (7.1% increase). The NWs were stable over 25 cycles at different C-rates. This approach provides an efficient and practical way to resolve the oxide issue of Ge-based anodes, and high-performance lithium-ion batteries were demonstrated using the oxide-removed NW anodes. This study presents an advance towards the realization of the commercial batteries based on Ge as an active electrode material. © 2021, The Author(s), under exclusive licence to Springer Science+Business Media, LLC part of Springer Nature. | - |
dc.language | 영어 | - |
dc.language.iso | en | - |
dc.publisher | Springer | - |
dc.relation.isPartOf | Journal of Materials Science: Materials in Electronics | - |
dc.title | High-capacity CVD-grown Ge nanowire anodes for lithium-ion batteries: simple chemical etching approach for oxide removal | - |
dc.type | Article | - |
dc.type.rims | ART | - |
dc.description.journalClass | 1 | - |
dc.identifier.wosid | 000604896400002 | - |
dc.identifier.doi | 10.1007/s10854-020-04976-2 | - |
dc.identifier.bibliographicCitation | Journal of Materials Science: Materials in Electronics, v.32, no.2, pp.2103 - 2112 | - |
dc.description.isOpenAccess | N | - |
dc.identifier.scopusid | 2-s2.0-85098640907 | - |
dc.citation.endPage | 2112 | - |
dc.citation.startPage | 2103 | - |
dc.citation.title | Journal of Materials Science: Materials in Electronics | - |
dc.citation.volume | 32 | - |
dc.citation.number | 2 | - |
dc.contributor.affiliatedAuthor | Kim, Pangil | - |
dc.contributor.affiliatedAuthor | Chen, Tao | - |
dc.contributor.affiliatedAuthor | Song, Seunghyun | - |
dc.contributor.affiliatedAuthor | Bae, Joonho | - |
dc.type.docType | Article | - |
dc.subject.keywordPlus | Anodes | - |
dc.subject.keywordPlus | Chemical vapor deposition | - |
dc.subject.keywordPlus | Chlorine compounds | - |
dc.subject.keywordPlus | Electric discharges | - |
dc.subject.keywordPlus | Electrochemical electrodes | - |
dc.subject.keywordPlus | Energy dispersive spectroscopy | - |
dc.subject.keywordPlus | Germanium | - |
dc.subject.keywordPlus | High resolution transmission electron microscopy | - |
dc.subject.keywordPlus | Ions | - |
dc.subject.keywordPlus | Nanowires | - |
dc.subject.keywordPlus | Wet etching | - |
dc.subject.keywordPlus | Active electrode materials | - |
dc.subject.keywordPlus | Charge and discharge capacities | - |
dc.subject.keywordPlus | Chemical vapor deposition methods | - |
dc.subject.keywordPlus | Electrochemical characteristics | - |
dc.subject.keywordPlus | Electrochemical performance | - |
dc.subject.keywordPlus | Energy dispersive X ray spectroscopy | - |
dc.subject.keywordPlus | High-performance lithium-ion batteries | - |
dc.subject.keywordPlus | Rechargeable lithium ion battery | - |
dc.subject.keywordPlus | Lithium-ion batteries | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
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