Confronting Sulfur Electrode Passivation and Li Metal Electrode Degradation in Lithium-Sulfur Batteries Using Thiocyanate Anion

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dc.contributor.authorJung, Jinkwanko
dc.contributor.authorChu, Hyunwonko
dc.contributor.authorKim, Iljuko
dc.contributor.authorLee, Dong Hyunko
dc.contributor.authorDoo, Gisuko
dc.contributor.authorKwon, Hyeokjinko
dc.contributor.authorJo, Wonheeko
dc.contributor.authorKim, Sejinko
dc.contributor.authorCho, Hyenahko
dc.contributor.authorKim, Hee-Takko
dc.date.accessioned2023-06-07T07:01:36Z-
dc.date.available2023-06-07T07:01:36Z-
dc.date.created2023-04-17-
dc.date.issued2023-05-
dc.identifier.citationADVANCED SCIENCE, v.10, no.15-
dc.identifier.issn2198-3844-
dc.identifier.urihttp://hdl.handle.net/10203/307094-
dc.description.abstractSalt anions with a high donor number (DN) enable high sulfur utilization in lithium-sulfur (Li-S) batteries by inducing three-dimensional (3D) Li2S growth. However, their insufficient compatibility with Li metal electrodes limits their cycling stability. Herein, a new class of salt anion, thiocyanate (SCN-), is presented, which features a Janus character of electron donor and acceptor. Due to a strong Li+ coordination by SCN- and the direct interaction of SCN- with polysulfide anions, the LiSCN electrolyte has a remarkably high lithium polysulfide solubility. This electrolyte induces 3D Li2S formation and ameliorates cathode passivation, even more than Br-, a typical high DN anion. Moreover, SCN- forms a Li3N-enriched stable SEI layer at the surface of the Li metal electrode, enhancing cycling stability. A Li-S battery with the LiSCN electrolyte shows high current density operation (2.54 mA cm(-2)) with high discharge capacity (1133 mAh g(-1)) and prolonged cycle life (100 cycles). This work demonstrates that the cathode and anode performance in a Li-S battery can be simply and concurrently enhanced by the single salt anion.-
dc.languageEnglish-
dc.publisherWILEY-
dc.titleConfronting Sulfur Electrode Passivation and Li Metal Electrode Degradation in Lithium-Sulfur Batteries Using Thiocyanate Anion-
dc.typeArticle-
dc.identifier.wosid000954101200001-
dc.identifier.scopusid2-s2.0-85150935365-
dc.type.rimsART-
dc.citation.volume10-
dc.citation.issue15-
dc.citation.publicationnameADVANCED SCIENCE-
dc.identifier.doi10.1002/advs.202301006-
dc.contributor.localauthorKim, Hee-Tak-
dc.contributor.nonIdAuthorChu, Hyunwon-
dc.contributor.nonIdAuthorCho, Hyenah-
dc.description.isOpenAccessN-
dc.type.journalArticleArticle-
dc.subject.keywordAuthoracceptor number-
dc.subject.keywordAuthorGutmann donor number-
dc.subject.keywordAuthorLi+ solvation shell-
dc.subject.keywordAuthorLi3N-rich SEI layer-
dc.subject.keywordAuthorlithium sulfur batteries-
dc.subject.keywordAuthorthiocyanate anions-
dc.subject.keywordPlusREDOX REACTIONS-
dc.subject.keywordPlusDISCHARGE-
dc.subject.keywordPlusGROWTH-
dc.subject.keywordPlusETHER-
dc.subject.keywordPlusFILM-
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