Full metadata record
DC Field | Value | Language |
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dc.contributor.author | Park, Jong Won | - |
dc.contributor.author | Park, Doh Hee | - |
dc.contributor.author | Go, Soohyun | - |
dc.contributor.author | Nam, Dae-Hyun | - |
dc.contributor.author | Oh, Jihun | - |
dc.contributor.author | Han, Young-Kyu | - |
dc.contributor.author | Lee, Hochun | - |
dc.date.accessioned | 2022-07-06T02:33:04Z | - |
dc.date.available | 2022-07-06T02:33:04Z | - |
dc.date.created | 2022-06-16 | - |
dc.date.issued | 2022-09 | - |
dc.identifier.issn | 2405-8297 | - |
dc.identifier.uri | http://hdl.handle.net/20.500.11750/16485 | - |
dc.description.abstract | Ni-rich nickel-cobalt-manganese layered oxides have been widely used as advanced cathode materials; however, they exhibit poor thermal stability at elevated temperatures. Therefore, in this study, we synthesized lithium tetrafluoro(fluoromalonato)phosphate (LFMP) as a dual-functional electrolyte additive to improve the thermal stability of LiNi0.8Co0.1Mn0.1O2 (NCM811) cathode and graphite anode materials. The LFMP additive imparts excellent cyclability, storage performance, and mitigated gas evolution of NCM811/graphite cells at 60°C compared to its boron analog, lithium difluoro(fluoromalonato)borate (LFMB). The vast advantages of the LFMP additive can be attributed to the following two-fold origin: (i) On the NCM811 cathode, LFMP derives a cathode electrolyte interphase (CEI) that suppresses electrolyte decomposition and gas evolution more effectively than LFMB; (ii) On the graphite anode, LFMP induces a LiF-rich solid electrolyte interphase (SEI) that is more resistant to attack by phosphorus pentafluoride (PF5) than an LFMB-induced organic-rich SEI. Our first-principles calculations corroborate that the CEI and SEI layers derived by LFMP are superior to those of LFMB owing to the strong binding with a superoxide radical (O2▪−) and weak binding with PF5 and favorable LiF formation, respectively. Considering its advantages, LFMP is an outstanding electrolyte additive for thermally stable NCM811/graphite batteries. This study opens a new avenue for using malonatophosphates as a new class of electrolyte additives for enhanced surface stability of Ni-rich cathodes and graphite anodes. © 2022 | - |
dc.language | English | - |
dc.publisher | Elsevier BV | - |
dc.title | Malonatophosphate as an SEI- and CEI-forming additive that outperforms malonatoborate for thermally robust lithium-ion batteries | - |
dc.type | Article | - |
dc.identifier.doi | 10.1016/j.ensm.2022.05.009 | - |
dc.identifier.wosid | 000833524200001 | - |
dc.identifier.scopusid | 2-s2.0-85129917360 | - |
dc.identifier.bibliographicCitation | Energy Storage Materials, v.50, pp.75 - 85 | - |
dc.description.isOpenAccess | FALSE | - |
dc.subject.keywordAuthor | Lithium− ion batteries | - |
dc.subject.keywordAuthor | Cathode electrolyte interphase | - |
dc.subject.keywordAuthor | Solid electrolyte interphase | - |
dc.subject.keywordAuthor | Lithium difluoro(fluoromalonato)borate | - |
dc.subject.keywordAuthor | Lithium tetrafluoro(fluoromalonato)phosphate | - |
dc.subject.keywordPlus | VINYLENE CARBONATE | - |
dc.subject.keywordPlus | LINI0.6CO0.2MN0.2O2 CATHODE | - |
dc.subject.keywordPlus | LI-ION | - |
dc.subject.keywordPlus | GRAPHITE | - |
dc.subject.keywordPlus | LAYER | - |
dc.subject.keywordPlus | SALT | - |
dc.subject.keywordPlus | PERFORMANCE | - |
dc.subject.keywordPlus | INTERFACE | - |
dc.subject.keywordPlus | STABILITY | - |
dc.subject.keywordPlus | FILM | - |
dc.citation.endPage | 85 | - |
dc.citation.startPage | 75 | - |
dc.citation.title | Energy Storage Materials | - |
dc.citation.volume | 50 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Chemistry; Science & Technology - Other Topics; Materials Science | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary | - |
dc.type.docType | Article | - |
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