File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Article: A high-performance potassium metal battery using safe ionic liquid electrolyte

TitleA high-performance potassium metal battery using safe ionic liquid electrolyte
Authors
KeywordsPotassium battery
ionic liquid electrolyte
Prussian blue
high-safety battery
high-energy-density battery
Issue Date2020
Citation
Proceedings of the National Academy of Sciences of the United States of America, 2020, v. 117, n. 45, p. 27847-27853 How to Cite?
AbstractPotassium secondary batteries are contenders of next-generation energy storage devices owing to the much higher abundance of potassium than lithium. However, safety issues and poor cycle life of K metal battery have been key bottlenecks. Here we report an ionic liquid electrolyte comprising 1-ethyl-3-methylimidazolium chloride/AlCl3/KCl/potassium bis(fluorosulfonyl) imide for safe and high-performance batteries. The electrolyte is nonflammable and exhibits a high ionic conductivity of 13.1 mS cm−1 at room temperature. A 3.6-V battery with K anode and Prussian blue/reduced graphene oxide cathode delivers a high energy and power density of 381 and 1,350 W kg−1, respectively. The battery shows an excellent cycling stability over 820 cycles, retaining ∼89% of the original capacity with high Coulombic efficiencies of ∼99.9%. High cyclability is also achieved at elevated temperatures up to 60 °C. Uniquely, robust K, Al, F, and Cl-containing passivating interphases are afforded with this electrolyte, which is key to superior battery cycling performances.
Persistent Identifierhttp://hdl.handle.net/10722/334702
ISSN
2023 Impact Factor: 9.4
2023 SCImago Journal Rankings: 3.737
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorSun, Hao-
dc.contributor.authorLiang, Peng-
dc.contributor.authorZhu, Guanzhou-
dc.contributor.authorHung, Wei Hsuan-
dc.contributor.authorLi, Yuan Yao-
dc.contributor.authorTai, Hung Chun-
dc.contributor.authorHuang, Cheng Liang-
dc.contributor.authorLi, Jiachen-
dc.contributor.authorMeng, Yongtao-
dc.contributor.authorAngell, Michael-
dc.contributor.authorWang, Chang An-
dc.contributor.authorDai, Hongjie-
dc.date.accessioned2023-10-20T06:50:03Z-
dc.date.available2023-10-20T06:50:03Z-
dc.date.issued2020-
dc.identifier.citationProceedings of the National Academy of Sciences of the United States of America, 2020, v. 117, n. 45, p. 27847-27853-
dc.identifier.issn0027-8424-
dc.identifier.urihttp://hdl.handle.net/10722/334702-
dc.description.abstractPotassium secondary batteries are contenders of next-generation energy storage devices owing to the much higher abundance of potassium than lithium. However, safety issues and poor cycle life of K metal battery have been key bottlenecks. Here we report an ionic liquid electrolyte comprising 1-ethyl-3-methylimidazolium chloride/AlCl3/KCl/potassium bis(fluorosulfonyl) imide for safe and high-performance batteries. The electrolyte is nonflammable and exhibits a high ionic conductivity of 13.1 mS cm−1 at room temperature. A 3.6-V battery with K anode and Prussian blue/reduced graphene oxide cathode delivers a high energy and power density of 381 and 1,350 W kg−1, respectively. The battery shows an excellent cycling stability over 820 cycles, retaining ∼89% of the original capacity with high Coulombic efficiencies of ∼99.9%. High cyclability is also achieved at elevated temperatures up to 60 °C. Uniquely, robust K, Al, F, and Cl-containing passivating interphases are afforded with this electrolyte, which is key to superior battery cycling performances.-
dc.languageeng-
dc.relation.ispartofProceedings of the National Academy of Sciences of the United States of America-
dc.subjectPotassium battery-
dc.subjectionic liquid electrolyte-
dc.subjectPrussian blue-
dc.subjecthigh-safety battery-
dc.subjecthigh-energy-density battery-
dc.titleA high-performance potassium metal battery using safe ionic liquid electrolyte-
dc.typeArticle-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1073/pnas.2012716117-
dc.identifier.pmid33106405-
dc.identifier.scopuseid_2-s2.0-85096080165-
dc.identifier.volume117-
dc.identifier.issue45-
dc.identifier.spage27847-
dc.identifier.epage27853-
dc.identifier.eissn1091-6490-
dc.identifier.isiWOS:000590753400018-

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats