Facile Synthesis of Nb2O5@Carbon Core-Shell Nanocrystals with Controlled Crystalline Structure for High-Power Anodes in Hybrid Supercapacitors
DC Field | Value | Language |
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dc.contributor.author | Lim, Eunho | - |
dc.contributor.author | Jo, Changshin | - |
dc.contributor.author | Kim, Haegyeom | - |
dc.contributor.author | Kim, Mok-Hwa | - |
dc.contributor.author | Mun, Yeongdong | - |
dc.contributor.author | Chun, Jinyoung | - |
dc.contributor.author | Ye, Youngjin | - |
dc.contributor.author | Hwang, Jongkook | - |
dc.contributor.author | Ha, Kyoung-Su | - |
dc.contributor.author | Roh, Kwang Chul | - |
dc.contributor.author | Kang, Kisuk | - |
dc.contributor.author | Yoon, Songhun | - |
dc.contributor.author | Lee, Jinwoo | - |
dc.date.available | 2019-03-08T17:00:32Z | - |
dc.date.issued | 2015-07 | - |
dc.identifier.issn | 1936-0851 | - |
dc.identifier.issn | 1936-086X | - |
dc.identifier.uri | https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/9417 | - |
dc.description.abstract | Hybrid supercapacitors (battery-supercapacitor hybrid devices, HSCs) deliver high energy within seconds (excellent rate capability) with stable cyclability. One of the key limitations in developing high-performance HSCs is imbalance in power capability between the sluggish Faradaic lithium-intercalation anode and rapid non-Faradaic capacitive cathode. To solve this problem, we synthesize Nb2O5@carbon core-shell nanocyrstals (Nb2O5@C NCs) as high-power anode materials with controlled crystalline phases (orthorhombic (7) and pseudohexagonal (TT)) via a facile one-pot synthesis method based on a water-in-oil microemulsion system. The synthesis of ideal T-Nb2O5 for fast Li+ diffusion is simply achieved by controlling the microemulsion parameter (e.g., pH control). The T-Nb2O5@C NCs shows a reversible specific capacity of similar to 180 mA h g(-1) at 0.05 A g(-1) (1.1-3.0 V vs Li/Li+) with rapid rate capability compared to that of TT-Nb2O5@C and carbon shell-free Nb2O5 NCs, mainly due to synergistic effects of (i) the structural merit of T-Nb2O5 and (ii) the conductive carbon shell for high electron mobility. The highest energy (similar to 63 W h kg(-1)) and power (16 528 W kg(-1) achieved at similar to 5 W h kg(-1)) densities within the voltage range of 1.0-35 V of the HSC using T-Nb2O5@C anode and MSP-20 cathode are remarkable. | - |
dc.format.extent | 9 | - |
dc.language | 영어 | - |
dc.language.iso | ENG | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.title | Facile Synthesis of Nb2O5@Carbon Core-Shell Nanocrystals with Controlled Crystalline Structure for High-Power Anodes in Hybrid Supercapacitors | - |
dc.type | Article | - |
dc.identifier.doi | 10.1021/acsnano.5b02601 | - |
dc.identifier.bibliographicCitation | ACS NANO, v.9, no.7, pp 7497 - 7505 | - |
dc.description.isOpenAccess | N | - |
dc.identifier.wosid | 000358823200087 | - |
dc.identifier.scopusid | 2-s2.0-84938152116 | - |
dc.citation.endPage | 7505 | - |
dc.citation.number | 7 | - |
dc.citation.startPage | 7497 | - |
dc.citation.title | ACS NANO | - |
dc.citation.volume | 9 | - |
dc.type.docType | Article | - |
dc.publisher.location | 미국 | - |
dc.subject.keywordAuthor | orthorhombic Nb2O5 nanocrystals | - |
dc.subject.keywordAuthor | controlled crystal structures | - |
dc.subject.keywordAuthor | core-shell nanostructures | - |
dc.subject.keywordAuthor | high-power anodes | - |
dc.subject.keywordAuthor | hybrid supercapacitors | - |
dc.subject.keywordPlus | LITHIUM-ION BATTERIES | - |
dc.subject.keywordPlus | ELECTROCHEMICAL ENERGY-STORAGE | - |
dc.subject.keywordPlus | CARBIDE-DERIVED CARBON | - |
dc.subject.keywordPlus | HIGH-PERFORMANCE ANODE | - |
dc.subject.keywordPlus | NIOBIUM PENTOXIDE | - |
dc.subject.keywordPlus | ELECTRODE MATERIALS | - |
dc.subject.keywordPlus | ACTIVATED CARBON | - |
dc.subject.keywordPlus | INTERCALATION PSEUDOCAPACITANCE | - |
dc.subject.keywordPlus | NEGATIVE-ELECTRODE | - |
dc.subject.keywordPlus | NB2O5 ELECTRODES | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.relation.journalResearchArea | Science & Technology - Other Topics | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Multidisciplinary | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical | - |
dc.relation.journalWebOfScienceCategory | Nanoscience & Nanotechnology | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.description.journalRegisteredClass | sci | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
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