Discovery of Dual-Functional Amorphous Titanium Suboxide to Promote Polysulfide Adsorption and Regulate Sulfide Growth in Li-S Batteries
DC Field | Value | Language |
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dc.contributor.author | Gueon, Donghee | - |
dc.contributor.author | Yoon, Jisu | - |
dc.contributor.author | Cho, Jinhan | - |
dc.contributor.author | Moon, Jun Hyuk | - |
dc.date.accessioned | 2022-08-15T09:40:31Z | - |
dc.date.available | 2022-08-15T09:40:31Z | - |
dc.date.created | 2022-08-12 | - |
dc.date.issued | 2022-08 | - |
dc.identifier.issn | 2198-3844 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/143255 | - |
dc.description.abstract | Lithium-sulfur (Li-S) batteries are promising as next-generation energy storage systems. Adsorbents for sulfide species are favorably applied to the cathode, but this substrate often results in a surface-passivating lithium sulfide(Li2S) film with a strong adsorption of Li2S. Here, an amorphous titanium suboxide (a-TiOx) is presented that strongly adsorbs lithium polysulfides (Li2Sx, x < 6) but relatively weakly adsorbs to Li2S. With these characteristics, the a-TiOx achieves high conversion of Li2Sx and high sulfur utilization accompanying the growth of particulate Li2S. The DFT calculations present a mechanism for particulate growth driven by the promoted diffusion and favorable clustering of Li2S. The a-TiOx-coated carbon nanotube-assembled film (CNTF) cathode substrate cell achieves a high discharge capacity equivalent to 90% sulfur utilization at 0.2 C. The cell also delivers a high capacity of 850 mAh g(-1) even at the ultra-high-speed of 10 C and also exhibits high stability of capacity loss of 0.0226% per cycle up to 500 cycles. The a-TiOx/CNTF is stacked to achieve a high loading of 7.5 mg S cm(-2), achieving a practical areal capacity of 10.1 mAh cm(-2). | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | WILEY | - |
dc.subject | SULFUR BATTERIES | - |
dc.subject | THIN-FILMS | - |
dc.subject | LITHIUM | - |
dc.subject | CONVERSION | - |
dc.subject | DISCHARGE | - |
dc.title | Discovery of Dual-Functional Amorphous Titanium Suboxide to Promote Polysulfide Adsorption and Regulate Sulfide Growth in Li-S Batteries | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Cho, Jinhan | - |
dc.identifier.doi | 10.1002/advs.202200958 | - |
dc.identifier.scopusid | 2-s2.0-85131201109 | - |
dc.identifier.wosid | 000806006300001 | - |
dc.identifier.bibliographicCitation | ADVANCED SCIENCE, v.9, no.22 | - |
dc.relation.isPartOf | ADVANCED SCIENCE | - |
dc.citation.title | ADVANCED SCIENCE | - |
dc.citation.volume | 9 | - |
dc.citation.number | 22 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.isOpenAccess | Y | - |
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.journalWebOfScienceCategory | Chemistry, Multidisciplinary | - |
dc.relation.journalWebOfScienceCategory | Nanoscience & Nanotechnology | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.subject.keywordPlus | SULFUR BATTERIES | - |
dc.subject.keywordPlus | THIN-FILMS | - |
dc.subject.keywordPlus | LITHIUM | - |
dc.subject.keywordPlus | CONVERSION | - |
dc.subject.keywordPlus | DISCHARGE | - |
dc.subject.keywordAuthor | amorphous titanium suboxides | - |
dc.subject.keywordAuthor | DFT calculations | - |
dc.subject.keywordAuthor | high sulfur loading | - |
dc.subject.keywordAuthor | lithium sulfide clustering | - |
dc.subject.keywordAuthor | lithium-sulfur batteries | - |
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