Magneli-Phase Ti4O7 Nanosphere Electrocatalyst Support for Carbon-Free Oxygen Electrodes in Lithium-Oxygen Batteries
DC Field | Value | Language |
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dc.contributor.author | Lee, Seun | - |
dc.contributor.author | Lee, Gwang-Hee | - |
dc.contributor.author | Kim, Jae-Chan | - |
dc.contributor.author | Kim, Dong-Wan | - |
dc.date.accessioned | 2021-09-02T14:02:22Z | - |
dc.date.available | 2021-09-02T14:02:22Z | - |
dc.date.created | 2021-06-16 | - |
dc.date.issued | 2018-03 | - |
dc.identifier.issn | 2155-5435 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/76842 | - |
dc.description.abstract | Lithium-oxygen batteries have been considerably researched due to their potential for high energy density compared to some rechargeable batteries. However, it is known that the stability of a carbon-based oxygen electrode is insufficient owing to the promotion of carbonate formation, which results in capacity fading and large overpotential in lithium-oxygen batteries. To improve the chemical stability in organic-based electrolytes, alternative electrocatalyst support materials are required. The Ti-O crystal system appears to provide a good compromise between electrochemical performance and cost and is thus an interesting material for further investigation. Here, we investigate a carbon-free electrode with the goal of identifying routes for its successful optimization. To replace carbon materials as an electrocatalyst support, Magneli Ti4O7 nanospheres were synthesized from anatase TiO2 nanospheres via a controlled thermochemical reduction. The Magna Ti4O7 nanospheres demonstrated effective overpotential characteristics (1.53 V) compared to the anatase TiO2 nanospheres (1.91 V) during charge-discharge cycling at a current rate of 100 mA g(-1). Additionally, RuO2@Magneli-Ti4O7 nanospheres were prepared as a bifunctional catalyst-containing oxygen electrode for lithium-oxygen batteries, providing a remarkably reduced overpotential (0.9 V). | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.subject | LI-O-2 BATTERY | - |
dc.subject | CATHODE | - |
dc.subject | METAL | - |
dc.subject | REDUCTION | - |
dc.subject | PROMISE | - |
dc.title | Magneli-Phase Ti4O7 Nanosphere Electrocatalyst Support for Carbon-Free Oxygen Electrodes in Lithium-Oxygen Batteries | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Lee, Gwang-Hee | - |
dc.contributor.affiliatedAuthor | Kim, Dong-Wan | - |
dc.identifier.doi | 10.1021/acscatal.7b03741 | - |
dc.identifier.scopusid | 2-s2.0-85042879155 | - |
dc.identifier.wosid | 000426804100110 | - |
dc.identifier.bibliographicCitation | ACS CATALYSIS, v.8, no.3, pp.2601 - 2610 | - |
dc.relation.isPartOf | ACS CATALYSIS | - |
dc.citation.title | ACS CATALYSIS | - |
dc.citation.volume | 8 | - |
dc.citation.number | 3 | - |
dc.citation.startPage | 2601 | - |
dc.citation.endPage | 2610 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical | - |
dc.subject.keywordPlus | LI-O-2 BATTERY | - |
dc.subject.keywordPlus | CATHODE | - |
dc.subject.keywordPlus | METAL | - |
dc.subject.keywordPlus | REDUCTION | - |
dc.subject.keywordPlus | PROMISE | - |
dc.subject.keywordAuthor | Magneli phase | - |
dc.subject.keywordAuthor | carbon-free | - |
dc.subject.keywordAuthor | Ti4O7 | - |
dc.subject.keywordAuthor | RuO2 | - |
dc.subject.keywordAuthor | Li-O-2 batteries | - |
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