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DC Field | Value | Language |
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dc.citation.endPage | 24826 | - |
dc.citation.number | 22 | - |
dc.citation.startPage | 24817 | - |
dc.citation.title | ACS APPLIED MATERIALS & INTERFACES | - |
dc.citation.volume | 12 | - |
dc.contributor.author | Choi, Tae-Uk | - |
dc.contributor.author | Baek, Gyeongeun | - |
dc.contributor.author | Lee, Seung Geol | - |
dc.contributor.author | Lee, Ji-Hoon | - |
dc.date.accessioned | 2024-03-20T11:05:08Z | - |
dc.date.available | 2024-03-20T11:05:08Z | - |
dc.date.created | 2024-03-20 | - |
dc.date.issued | 2020-06 | - |
dc.description.abstract | Prussian blue analogues (PBAs) have been highlighted as electrode materials for aqueous rechargeable batteries (ARBs because of their favorable crystal structure and electrochemical activity. However, dissolution of the transition-metal ions during cycling degrades the materials and hinders the development of longlife-span batteries. To overcome this limitation, a strategy to revive the capacity degradation of PBA-based cathodes was developed herein based on designing all-PBA-based core@shell materials, while specific reduction upon introducing the shell layers was minimized. The core@shell materials were constructed using a V/Fe PBA (high capacity) core and a Cu/Fe PBA (high cycling stability) shell via a two-step co-precipitation method. The electrochemical performances including specific capacity, cycling stability, and rate capability as a function of the Cu/Fe PBA shell thickness were explored. At the optimal Cu/Fe PBA thickness, improved capacity retention after 200 cycles of >90% (72% for the core only) was attained with negligible capacity reductions from 94 (core only) to 90 (core shell) mA h g(-1), arising from the high electrochemical activity and stability of the Cu/Fe PBA shell and stabilized interfaces due to the crystallographic coherence between the core and shell materials. In addition, the power performance of the core@shell materials was significantly improved, e.g., C-38.4C /C-0.6C for a core@shell of 80% and core only of 62%, arising from the unique chemical coordination and facile ion diffusion kinetics of the Cu/Fe PBA shell. The newly developed V/Fe@Cu/Fe PBA-based cathodes offer an effective strategy for fabricating sustainable and low-cost ARBs. | - |
dc.identifier.bibliographicCitation | ACS APPLIED MATERIALS & INTERFACES, v.12, no.22, pp.24817 - 24826 | - |
dc.identifier.doi | 10.1021/acsami.0c05458 | - |
dc.identifier.issn | 1944-8244 | - |
dc.identifier.scopusid | 2-s2.0-85086050956 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/81706 | - |
dc.identifier.wosid | 000538515700031 | - |
dc.language | 영어 | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.title | Hierarchically Designed Cathodes Composed of Vanadium Hexacyanoferrate@Copper Hexacyanoferrate with Enhanced Cycling Stability | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Nanoscience & Nanotechnology; Materials Science, Multidisciplinary | - |
dc.relation.journalResearchArea | Science & Technology - Other Topics; Materials Science | - |
dc.type.docType | Article | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordAuthor | aqueous rechargeable batteries | - |
dc.subject.keywordAuthor | metal-organic frameworks | - |
dc.subject.keywordAuthor | Prussian blue analogues | - |
dc.subject.keywordAuthor | core-shell structure | - |
dc.subject.keywordAuthor | electrochemical energy storage systems | - |
dc.subject.keywordPlus | PRUSSIAN BLUE | - |
dc.subject.keywordPlus | OPEN FRAMEWORK | - |
dc.subject.keywordPlus | ION | - |
dc.subject.keywordPlus | BATTERY | - |
dc.subject.keywordPlus | ELECTRODE | - |
dc.subject.keywordPlus | TECHNOLOGIES | - |
dc.subject.keywordPlus | SULFATE | - |
dc.subject.keywordPlus | STORAGE | - |
dc.subject.keywordPlus | LI | - |
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