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dc.contributor.authorWang, Evelynaen
dc.contributor.authorDey, Sunitaen
dc.contributor.authorLiu, Taoen
dc.contributor.authorMenkin, Svetlanaen
dc.contributor.authorGrey, Clareen
dc.date.accessioned2020-03-26T00:30:21Z
dc.date.available2020-03-26T00:30:21Z
dc.date.issued2020-04en
dc.identifier.issn2380-8195
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/303778
dc.description.abstractFor Li–air batteries, dissolved gas can cross over from the air electrode to the Li metal anode and affect the solid-electrolyte interphase (SEI) formation, a phenomenon that has not been fully characterized. In this work, the impact of atmospheric gases on the SEI properties is studied using electrochemical methods and ex situ characterization techniques, including X-ray photoelectron spectroscopy, X-ray diffraction, Fourier transform infrared spectroscopy, and scanning electron microscopy. The presence of O2 significantly improved the lithium cyclability; less lithium is consumed to form the SEI or is lost because of electrical disconnects. However, the SEI resistivity and plating overpotentials increased. Lithium cycled in an “air-like” mixed O2/N2 environment also demonstrated improved cycling efficiency, suggesting that dissolved O2 participates in electrolyte reduction, forming a homogeneous SEI, even at low concentrations. The impact of gas environments on Li metal plating and SEI formation represents an additional parameter in designing future Li-metal batteries.
dc.description.sponsorshipThe authors thank EPSRC-EP/M009521/1 and the Cambridge Trust (E.W.) for research funding.
dc.format.mediumPrint-Electronicen
dc.languageengen
dc.publisherAmerican Chemical Society
dc.rightsAll rights reserved
dc.rights.uri
dc.titleEffects of Atmospheric Gases on Li Metal Cyclability and Solid-Electrolyte Interphase Formation.en
dc.typeArticle
prism.endingPage1094
prism.issueIdentifier4en
prism.publicationDate2020en
prism.publicationNameACS energy lettersen
prism.startingPage1088
prism.volume5en
dc.identifier.doi10.17863/CAM.50858
dcterms.dateAccepted2020-03-10en
rioxxterms.versionofrecord10.1021/acsenergylett.0c00257en
rioxxterms.versionAM
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserveden
rioxxterms.licenseref.startdate2020-04en
dc.contributor.orcidDey, Sunita [0000-0002-6601-7169]
dc.contributor.orcidGrey, Clare [0000-0001-5572-192X]
dc.identifier.eissn2380-8195
rioxxterms.typeJournal Article/Reviewen
pubs.funder-project-idEPSRC (via University of Oxford) (EP/M009521/1)
cam.orpheus.successTue Mar 31 10:35:00 BST 2020 - Embargo updated*
rioxxterms.freetoread.startdate2021-03-17


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