Ultrafast sodium storage in anatase TiO2 nanoparticles embedded on carbon nanotubes
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Hwang, Jang-Yeon | - |
dc.contributor.author | Myung, Seung-Taek | - |
dc.contributor.author | Lee, Joo-Hyeong | - |
dc.contributor.author | Abouimrane, Ali | - |
dc.contributor.author | Belharouak, Ilias | - |
dc.contributor.author | Sun, Yang Kook | - |
dc.date.accessioned | 2021-08-02T17:54:18Z | - |
dc.date.available | 2021-08-02T17:54:18Z | - |
dc.date.created | 2021-05-12 | - |
dc.date.issued | 2015-09 | - |
dc.identifier.issn | 2211-2855 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/24871 | - |
dc.description.abstract | The main disadvantage of using transition metal oxides for Na+-ion batteries is the sluggish kinetics of insertion of Na+ ions into the structure. Here, we introduce nanosized anatase TiO2 that is partially doped with fluorine (TiO2-delta F delta) to form electro-conducting trivalent Ti3+ as an ultrafast Na+ insertion material for use as an anode for sodium-ion batteries. In addition, the F-doped TiO2-delta F delta is modified by electro-conducting carbon nanotubes (CNTs) to further enhance the electric conductivity. The composite F-doped TiO2 embedded in CNTs is produced in a one-pot hydrothermal reaction. X-ray diffraction and microscopic studies revealed that nanocrystalline anatase-type TiO2-delta F delta particles, in which fluorine is present with TiO2 particles, are loaded on the CNTs. This yields a high electric conductivity of approximately 5.8 S cm(-1). The first discharge capacity of the F-doped TiO2 embedded in CNTs is approximately 250 mA h (g-oxide)(-1), and is retained at 97% after 100 cycles. As expected, a high-rate performance was achieved even at the 100 C discharging rate (25 A g(-1)) where the composite material demonstrated a capacity of 118 mA h g(-1) under the 0.1 C-rate charge condition. The present work also highlights a significant improvement in the insertion and extraction of Na+ ions when the material was charged and discharged under the same rate of 35 C (8.75 A g(-1)), delivering approximately 90 mA h (g-oxide)(-1). | - |
dc.language | 영어 | - |
dc.language.iso | en | - |
dc.publisher | ELSEVIER SCIENCE BV | - |
dc.title | Ultrafast sodium storage in anatase TiO2 nanoparticles embedded on carbon nanotubes | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Sun, Yang Kook | - |
dc.identifier.doi | 10.1016/j.nanoen.2015.06.017 | - |
dc.identifier.scopusid | 2-s2.0-84936992494 | - |
dc.identifier.wosid | 000364579300023 | - |
dc.identifier.bibliographicCitation | NANO ENERGY, v.16, pp.218 - 226 | - |
dc.relation.isPartOf | NANO ENERGY | - |
dc.citation.title | NANO ENERGY | - |
dc.citation.volume | 16 | - |
dc.citation.startPage | 218 | - |
dc.citation.endPage | 226 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.isOpenAccess | N | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.relation.journalResearchArea | Science & Technology - Other Topics | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalResearchArea | Physics | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical | - |
dc.relation.journalWebOfScienceCategory | Nanoscience & Nanotechnology | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.relation.journalWebOfScienceCategory | Physics, Applied | - |
dc.subject.keywordPlus | PERFORMANCE ANODE MATERIAL | - |
dc.subject.keywordPlus | X-RAY-DIFFRACTION | - |
dc.subject.keywordPlus | LITHIUM-ION | - |
dc.subject.keywordPlus | NANOCOMPOSITE ELECTRODES | - |
dc.subject.keywordPlus | NA | - |
dc.subject.keywordPlus | BATTERIES | - |
dc.subject.keywordPlus | MECHANISM | - |
dc.subject.keywordPlus | OXIDE | - |
dc.subject.keywordPlus | COMPOSITES | - |
dc.subject.keywordPlus | CHALLENGES | - |
dc.subject.keywordAuthor | Anatase TiO2 | - |
dc.subject.keywordAuthor | Carbon nanotubes | - |
dc.subject.keywordAuthor | Nanocrystalline | - |
dc.subject.keywordAuthor | Anode | - |
dc.subject.keywordAuthor | Sodium batteries | - |
dc.identifier.url | https://www.sciencedirect.com/science/article/pii/S2211285515002712?via%3Dihub | - |
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