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DC Field | Value | Language |
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dc.citation.endPage | 15837 | - |
dc.citation.number | 30 | - |
dc.citation.startPage | 15828 | - |
dc.citation.title | JOURNAL OF MATERIALS CHEMISTRY A | - |
dc.citation.volume | 5 | - |
dc.contributor.author | Ryu, Jaegeon | - |
dc.contributor.author | Hong, Dongki | - |
dc.contributor.author | Shin, Sunghee | - |
dc.contributor.author | Choi, Wooyoung | - |
dc.contributor.author | Kim, Ahyoung | - |
dc.contributor.author | Park, Soojin | - |
dc.date.accessioned | 2023-12-21T22:06:34Z | - |
dc.date.available | 2023-12-21T22:06:34Z | - |
dc.date.created | 2017-08-26 | - |
dc.date.issued | 2017-08 | - |
dc.description.abstract | Achieving high volumetric energy Ge anodes leaves behind a big challenge such as a huge volume expansion upon Li-ion uptake. Among various strategies, the introduction of conductive and buffering carbon layers can resolve the typical problems (such as a large volume change and poor electrical conductivity) of alloy-type anodes to some extent. On the other hand, a cost-effective and scalable synthesis method has yet to be revealed. In this study, a highly conductive carbon (ANHC) layer derived from polysaccharide with a high nitrogen-doping level (>10%) effectively mitigates the structural deformation of Ge anodes, which is also independently involved in the reversible redox reaction with an improved electrochemical performance compared to typical graphite anodes. The ANHC/Ge self-assembled by a carbothermal reduction process has remarkable anode performance in a half cell, including a stable cycle life (95% capacity retention after 500 cycles at a rate of 1C) with a high volumetric capacity of >1500 mA h cm(-3) and a significant suppression of electrode swelling (<21%). In addition, the full cell consisting of the ANHC/Ge anode and LiCoO2 cathode shows excellent cyclability corresponding to a capacity retention of 73% over 300 cycles at a rate of 1C, which offers ultra-high volumetric energy applicable in various energy storage applications. | - |
dc.identifier.bibliographicCitation | JOURNAL OF MATERIALS CHEMISTRY A, v.5, no.30, pp.15828 - 15837 | - |
dc.identifier.doi | 10.1039/c7ta04028h | - |
dc.identifier.issn | 2050-7488 | - |
dc.identifier.scopusid | 2-s2.0-85026781612 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/22596 | - |
dc.identifier.url | http://pubs.rsc.org/en/content/articlelanding/2017/ta/c7ta04028h#!divAbstract | - |
dc.identifier.wosid | 000406672400040 | - |
dc.language | 영어 | - |
dc.publisher | ROYAL SOC CHEMISTRY | - |
dc.title | Hybridizing germanium anodes with polysaccharide-derived nitrogen-doped carbon for high volumetric capacity of Li-ion batteries | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical; Energy & Fuels; Materials Science, Multidisciplinary | - |
dc.relation.journalResearchArea | Chemistry; Energy & Fuels; Materials Science | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordPlus | LITHIUM STORAGE PERFORMANCE | - |
dc.subject.keywordPlus | LONG CYCLE LIFE | - |
dc.subject.keywordPlus | ENERGY-STORAGE | - |
dc.subject.keywordPlus | HARD CARBON | - |
dc.subject.keywordPlus | MESOPOROUS GERMANIUM | - |
dc.subject.keywordPlus | SCALABLE SYNTHESIS | - |
dc.subject.keywordPlus | RATIONAL DESIGN | - |
dc.subject.keywordPlus | COMPOSITE ANODE | - |
dc.subject.keywordPlus | GE NANOWIRES | - |
dc.subject.keywordPlus | SI | - |
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