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Non-Flammable Ester Electrolyte with Boosted Stability Against Li for High-Performance Li metal Batteries

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dc.contributor.authorWang, Z.
dc.contributor.authorWang, Y.
dc.contributor.authorLi, B.
dc.contributor.authorBouwer, J.C.
dc.contributor.authorDavey, K.
dc.contributor.authorLu, J.
dc.contributor.authorGuo, Z.
dc.date.issued2022
dc.descriptionVersion of record online: September 5, 2022
dc.description.abstractIn traditional non-flammable electrolytes a trade-off always exists between non-flammability and battery performance. Previous research focused on reducing free solvents and forming anion-derived solid-electrolyte interphase. However, the contribution of solvated anions in boosting the stability of electrolyte has been overlooked. Here, we resolve this via introducing anions into Li+ solvation sheaths using anions with similar Gutmann donor number (DN) to that of solvent. Taking trimethyl phosphate fire-retardant (DN = 23.0 kcal mol-1) and NO3- (DN = 22.2 kcal mol-1) as an example, NO3- is readily involved in the Li+ solvation sheath and reduces the polarity of solvent. This results in boosted stability of electrolyte against Li. The developed non-flammable electrolyte has low viscosity, high ionic conductivity and is low cost. The reversibility of Li-Cu cell was improved to 99.49% and the lifespan of practical LMBs was extended by > 100%.
dc.description.statementofresponsibilityZhijie Wang, Yanyan Wang, Baohua Li, James C. Bouwer, Kenneth Davey, Jun Lu and Zaiping Guo
dc.identifier.citationAngewandte Chemie International Edition, 2022; 61(41):e202206682-1-e202206682-10
dc.identifier.doi10.1002/anie.202206682
dc.identifier.issn1433-7851
dc.identifier.issn1521-3773
dc.identifier.orcidWang, Z. [0000-0002-4745-7548]
dc.identifier.orcidWang, Y. [0000-0003-3236-1516]
dc.identifier.orcidDavey, K. [0000-0002-7623-9320]
dc.identifier.orcidGuo, Z. [0000-0003-3464-5301]
dc.identifier.urihttps://hdl.handle.net/2440/136476
dc.language.isoen
dc.publisherWiley
dc.relation.granthttp://purl.org/au-research/grants/arc/LP160101629
dc.relation.granthttp://purl.org/au-research/grants/arc/DP210101486
dc.relation.granthttp://purl.org/au-research/grants/arc/DP200101862
dc.relation.granthttp://purl.org/au-research/grants/arc/180100141
dc.relation.granthttp://purl.org/au-research/grants/arc/FL210100050
dc.rights© 2022 The Authors. Angewandte Chemie International Edition published by Wiley-VCH GmbH. This is an open access article under the terms of the Creative Commons Attribution Non-Commercial License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purpo
dc.source.urihttps://doi.org/10.1002/anie.202206682
dc.subjecthigh Coulombic efficiency
dc.subjecthigh stability
dc.subjectLi Metal Battery
dc.subjectnon-flammable electrolyte
dc.titleNon-Flammable Ester Electrolyte with Boosted Stability Against Li for High-Performance Li metal Batteries
dc.typeJournal article
pubs.publication-statusPublished

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