Show simple item record

AuthorBreitung, Bendc.contributor.author
AuthorWang, Qingsongdc.contributor.author
AuthorSchiele, Alexanderdc.contributor.author
AuthorTripković, Đorđijedc.contributor.author
AuthorSarkar, Abhishekdc.contributor.author
AuthorVelasco, Leonardodc.contributor.author
AuthorWang, Didc.contributor.author
AuthorBhattacharya, Subramshu S.dc.contributor.author
AuthorHahn, Horstdc.contributor.author
AuthorBrezesinski, Torstendc.contributor.author
Date of accession2022-07-14T12:13:27Zdc.date.accessioned
Available in OPARU since2022-07-14T12:13:27Zdc.date.available
Date of first publication2020-02-10dc.date.issued
AbstractWhich gas will it be? Multicomponent oxides and oxyfluorides are promising electrode materials for battery applications because of their robust performance enabled by entropy stabilization. This work provides insight into adverse side reactions on both cathode, Li(Co0.2Cu0.2Mg0.2Ni0.2Zn0.2)OF, and anode, (Co0.2Cu0.2Mg0.2Ni0.2Zn0.2)O, leading to gas evolution in Li‐ion cells during cycling operation. Multicomponent materials may exhibit favorable Li‐storage properties because of entropy stabilization. While the first examples of high‐entropy oxides and oxyfluorides show good cycling performance, they suffer from various problems. Here, we report on side reactions leading to gas evolution in Li‐ion cells using rock‐salt (Co0.2Cu0.2Mg0.2Ni0.2Zn0.2)O (HEO) or Li(Co0.2Cu0.2Mg0.2Ni0.2Zn0.2)OF (Li(HEO)F). Differential electrochemical mass spectrometry indicates that a robust solid‐electrolyte interphase layer is formed on the HEO anode, even when using an additive‐free electrolyte. For the Li(HEO)F cathode, the cumulative amount of gases is found by pressure measurements to depend strongly on the upper cutoff potential used during cycling. Cells charged to 5.0 V versus Li+/Li show the evolution of O2, H2, CO2, CO and POF3, with the latter species being indirectly due to lattice O2 release as confirmed by electron energy loss spectroscopy. This result attests to the negative effect that lattice instability at high potentials has on the gassing.dc.description.abstract
Languageendc.language.iso
PublisherUniversität Ulmdc.publisher
LicenseCC BY 4.0 Internationaldc.rights
Link to license texthttps://creativecommons.org/licenses/by/4.0/dc.rights.uri
Keywordlithium-ion batterydc.subject
Keywordrock-salt structuredc.subject
Keywordentropy stabilizationdc.subject
Keywordinterfacial reactivitydc.subject
Keywordoxygen evolutiondc.subject
Dewey Decimal GroupDDC 540 / Chemistry & allied sciencesdc.subject.ddc
LCSHLithium ion batteriesdc.subject.lcsh
LCSHPhotosynthetic oxygen evolutiondc.subject.lcsh
TitleGassing behavior of high‐entropy oxide anode and oxyfluoride cathode probed using differential electrochemical mass spectrometrydc.title
Resource typeWissenschaftlicher Artikeldc.type
SWORD Date2020-12-09T19:33:16Zdc.date.updated
VersionpublishedVersiondc.description.version
DOIhttp://dx.doi.org/10.18725/OPARU-43922dc.identifier.doi
URNhttp://nbn-resolving.de/urn:nbn:de:bsz:289-oparu-43998-4dc.identifier.urn
GNDLithium-Ionen-Akkumulatordc.subject.gnd
InstitutionHelmholtz-Institut Ulmuulm.affiliationSpecific
Peer reviewjauulm.peerReview
DCMI TypeTextuulm.typeDCMI
CategoryPublikationenuulm.category
DOI of original publication10.1002/batt.202000010dc.relation1.doi
Source - Title of sourceBatteries & Supercapssource.title
Source - Place of publicationWileysource.publisher
Source - Volume3source.volume
Source - Issue4source.issue
Source - Year2020source.year
Source - From page361source.fromPage
Source - To page369source.toPage
Source - eISSN2566-6223source.identifier.eissn
Bibliographyuulmuulm.bibliographie
Is Supplemented Byhttps://chemistry-europe.onlinelibrary.wiley.com/action/downloadSupplement?doi=10.1002%2Fbatt.202000010&file=batt202000010-sup-0001-misc_information.pdfdc.relation.isSupplementedBy


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record