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Article: High-Safety and High-Energy-Density Lithium Metal Batteries in a Novel Ionic-Liquid Electrolyte

TitleHigh-Safety and High-Energy-Density Lithium Metal Batteries in a Novel Ionic-Liquid Electrolyte
Authors
Keywordshigh-energy-density batteries
ionic-liquid electrolytes
lithium metal batteries
Issue Date2020
Citation
Advanced Materials, 2020, v. 32, n. 26, article no. 2001741 How to Cite?
AbstractRechargeable lithium metal batteries are next generation energy storage devices with high energy density, but face challenges in achieving high energy density, high safety, and long cycle life. Here, lithium metal batteries in a novel nonflammable ionic-liquid (IL) electrolyte composed of 1-ethyl-3-methylimidazolium (EMIm) cations and high-concentration bis(fluorosulfonyl)imide (FSI) anions, with sodium bis(trifluoromethanesulfonyl)imide (NaTFSI) as a key additive are reported. The Na ion participates in the formation of hybrid passivation interphases and contributes to dendrite-free Li deposition and reversible cathode electrochemistry. The electrolyte of low viscosity allows practically useful cathode mass loading up to ≈16 mg cm−2. Li anodes paired with lithium cobalt oxide (LiCoO2) and lithium nickel cobalt manganese oxide (LiNi0.8Co0.1Mn0.1O2, NCM 811) cathodes exhibit 99.6–99.9% Coulombic efficiencies, high discharge voltages up to 4.4 V, high specific capacity and energy density up to ≈199 mAh g−1 and ≈765 Wh kg−1 respectively, with impressive cycling performances over up to 1200 cycles. Highly stable passivation interphases formed on both electrodes in the novel IL electrolyte are the key to highly reversible lithium metal batteries, especially for Li–NMC 811 full batteries.
Persistent Identifierhttp://hdl.handle.net/10722/334662
ISSN
2023 Impact Factor: 27.4
2023 SCImago Journal Rankings: 9.191
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorSun, Hao-
dc.contributor.authorZhu, Guanzhou-
dc.contributor.authorZhu, Yuanmin-
dc.contributor.authorLin, Meng Chang-
dc.contributor.authorChen, Hui-
dc.contributor.authorLi, Yuan Yao-
dc.contributor.authorHung, Wei Hsuan-
dc.contributor.authorZhou, Bo-
dc.contributor.authorWang, Xi-
dc.contributor.authorBai, Yunxiang-
dc.contributor.authorGu, Meng-
dc.contributor.authorHuang, Cheng Liang-
dc.contributor.authorTai, Hung Chun-
dc.contributor.authorXu, Xintong-
dc.contributor.authorAngell, Michael-
dc.contributor.authorShyue, Jing Jong-
dc.contributor.authorDai, Hongjie-
dc.date.accessioned2023-10-20T06:49:45Z-
dc.date.available2023-10-20T06:49:45Z-
dc.date.issued2020-
dc.identifier.citationAdvanced Materials, 2020, v. 32, n. 26, article no. 2001741-
dc.identifier.issn0935-9648-
dc.identifier.urihttp://hdl.handle.net/10722/334662-
dc.description.abstractRechargeable lithium metal batteries are next generation energy storage devices with high energy density, but face challenges in achieving high energy density, high safety, and long cycle life. Here, lithium metal batteries in a novel nonflammable ionic-liquid (IL) electrolyte composed of 1-ethyl-3-methylimidazolium (EMIm) cations and high-concentration bis(fluorosulfonyl)imide (FSI) anions, with sodium bis(trifluoromethanesulfonyl)imide (NaTFSI) as a key additive are reported. The Na ion participates in the formation of hybrid passivation interphases and contributes to dendrite-free Li deposition and reversible cathode electrochemistry. The electrolyte of low viscosity allows practically useful cathode mass loading up to ≈16 mg cm−2. Li anodes paired with lithium cobalt oxide (LiCoO2) and lithium nickel cobalt manganese oxide (LiNi0.8Co0.1Mn0.1O2, NCM 811) cathodes exhibit 99.6–99.9% Coulombic efficiencies, high discharge voltages up to 4.4 V, high specific capacity and energy density up to ≈199 mAh g−1 and ≈765 Wh kg−1 respectively, with impressive cycling performances over up to 1200 cycles. Highly stable passivation interphases formed on both electrodes in the novel IL electrolyte are the key to highly reversible lithium metal batteries, especially for Li–NMC 811 full batteries.-
dc.languageeng-
dc.relation.ispartofAdvanced Materials-
dc.subjecthigh-energy-density batteries-
dc.subjectionic-liquid electrolytes-
dc.subjectlithium metal batteries-
dc.titleHigh-Safety and High-Energy-Density Lithium Metal Batteries in a Novel Ionic-Liquid Electrolyte-
dc.typeArticle-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1002/adma.202001741-
dc.identifier.pmid32449260-
dc.identifier.scopuseid_2-s2.0-85085562922-
dc.identifier.volume32-
dc.identifier.issue26-
dc.identifier.spagearticle no. 2001741-
dc.identifier.epagearticle no. 2001741-
dc.identifier.eissn1521-4095-
dc.identifier.isiWOS:000535015500001-

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