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DC Field | Value | Language |
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dc.citation.number | 25 | - |
dc.citation.startPage | 255702 | - |
dc.citation.title | NANOTECHNOLOGY | - |
dc.citation.volume | 26 | - |
dc.contributor.author | Ge, Mingyuan | - |
dc.contributor.author | Kim, Seongbeom | - |
dc.contributor.author | Nie, Anmin | - |
dc.contributor.author | Shahbazian-Yassar, Reza | - |
dc.contributor.author | Mecklenburg, Matthew | - |
dc.contributor.author | Lu, Yunhao | - |
dc.contributor.author | Fang, Xin | - |
dc.contributor.author | Shen, Chenfei | - |
dc.contributor.author | Rong, Jiepeng | - |
dc.contributor.author | Park, Song Yi | - |
dc.contributor.author | Kim, Dong Suk | - |
dc.contributor.author | Kim, Jin Young | - |
dc.contributor.author | Zhou, Chongwu | - |
dc.date.accessioned | 2023-12-22T01:10:09Z | - |
dc.date.available | 2023-12-22T01:10:09Z | - |
dc.date.created | 2015-09-22 | - |
dc.date.issued | 2015-06 | - |
dc.description.abstract | Engineering silicon into nanostructures has been a well-adopted strategy to improve the cyclic performance of silicon as a lithium-ion battery anode. Here, we show that the electrode performance can be further improved by alloying silicon with germanium. We have evaluated the electrode performance of SixGe1-x nanoparticles (NPs) with different compositions. Experimentally, SixGe1-x NPs with compositions approaching Si50Ge50 are found to have better cyclic retention than both Si-rich and Ge-rich NPs. During the charge/discharge process, NP merging and Si-Ge homogenization are observed. In addition, a distinct morphology difference is observed after 100 cycles, which is believed to be responsible for the different capacity retention behavior. The present study on SixGe1-x alloy NPs sheds light on the development of Si-based electrode materials for stable operation in lithium-ion batteries (e.g., through a comprehensive design of material structure and chemical composition). The investigation of composition-dependent morphology evolution in the delithiated Li-SiGe ternary alloy also significantly broadens our understanding of dealloying in complex systems, and it is complementary to the well-established understanding of dealloying behavior in binary systems (e.g., Au-Ag alloys) | - |
dc.identifier.bibliographicCitation | NANOTECHNOLOGY, v.26, no.25, pp.255702 | - |
dc.identifier.doi | 10.1088/0957-4484/26/25/255702 | - |
dc.identifier.issn | 0957-4484 | - |
dc.identifier.scopusid | 2-s2.0-84931271837 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/17061 | - |
dc.identifier.url | http://iopscience.iop.org/article/10.1088/0957-4484/26/25/255702/meta | - |
dc.identifier.wosid | 000356137400014 | - |
dc.language | 영어 | - |
dc.publisher | IOP PUBLISHING LTD | - |
dc.title | Capacity retention behavior and morphology evolution of SixGe1-x nanoparticles as lithium-ion battery anode | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied | - |
dc.relation.journalResearchArea | Science & Technology - Other Topics; Materials Science; Physics | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordAuthor | SiGe alloy | - |
dc.subject.keywordAuthor | structure evolution | - |
dc.subject.keywordAuthor | lithium-ion battery anode | - |
dc.subject.keywordPlus | LONG-CYCLE-LIFE | - |
dc.subject.keywordPlus | TRANSMISSION ELECTRON-MICROSCOPY | - |
dc.subject.keywordPlus | IN-SITU TEM | - |
dc.subject.keywordPlus | SILICON NANOPARTICLES | - |
dc.subject.keywordPlus | NANOSTRUCTURED SILICON | - |
dc.subject.keywordPlus | ROOM-TEMPERATURE | - |
dc.subject.keywordPlus | POROUS SILICON | - |
dc.subject.keywordPlus | LITHIATION | - |
dc.subject.keywordPlus | NANOWIRES | - |
dc.subject.keywordPlus | GERMANIUM | - |
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