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dc.contributor.authorColeman, Jonathanen
dc.contributor.authorBoland, Johnen
dc.date.accessioned2020-09-28T17:32:13Z
dc.date.available2020-09-28T17:32:13Z
dc.date.issued2020en
dc.date.submitted2020en
dc.identifier.citationBoland, J.B. and Tian, R. and Harvey, A. and Vega-Mayoral, V. and Griffin, A. and Horvath, D.V. and Gabbett, C. and Breshears, M. and Pepper, J. and Li, Y. and Coleman, J.N., Liquid phase exfoliation of GeS nanosheets in ambient conditions for lithium ion battery applications, 2D Materials, 7, 3, 2020en
dc.identifier.otherYen
dc.descriptionPUBLISHEDen
dc.descriptioncited By 0en
dc.description.abstractThe propensity of many 2D materials to oxidize in ambient conditions can complicate production and limit applications potential. Here we describe ambient liquid phase exfoliation of GeS, a layered material known for its chemical instability. Ambient exfoliation in organic solvents such as N-methyl-pyrrolidone yields good quality multi-layer GeS nanosheets. Although oxidation appears to occur with a time constant of ~10 d, the data suggests it to be limited to nanosheet edges leaving the basal plane intact. The rate of oxidation is slow enough to allow processing of the dispersions. For example, it was possible to size-select GeS nanosheets and characterize the size-dependence of nanosheet optical properties, leading to the observation of significant changes in bandgap with nanosheet thickness. Additionally, we were able to fabricate the nanosheets into lithium ion battery anodes using carbon nanotubes as both binder and conductive additive. These electrodes were relatively stable, showing ~0.2% capacity decay per cycle, and displayed low-rate capacity of 1523 mAh g−1 which is within 93% of the theoretical value. However, detailed analysis showed relatively poor rate performance, possibly due to nanosheet alignment.en
dc.language.isoenen
dc.relation.ispartofseries2D Materialsen
dc.relation.ispartofseries7en
dc.relation.ispartofseries3en
dc.rightsYen
dc.subjectNanosheeten
dc.subjectAlignmenten
dc.subjectGeSen
dc.subjectLiquid-phase exfoliationen
dc.subjectStabilityen
dc.subjectBatteryen
dc.titleLiquid phase exfoliation of GeS nanosheets in ambient conditions for lithium ion battery applicationsen
dc.typeJournal Articleen
dc.type.supercollectionscholarly_publicationsen
dc.type.supercollectionrefereed_publicationsen
dc.identifier.peoplefinderurlhttp://people.tcd.ie/colemajen
dc.identifier.peoplefinderurlhttp://people.tcd.ie/jbolanden
dc.identifier.rssinternalid220273en
dc.identifier.doihttp://dx.doi.org/10.1088/2053-1583/ab89e6en
dc.rights.ecaccessrightsopenAccess
dc.identifier.orcid_id0000-0001-9659-9721en
dc.contributor.sponsorScience Foundation Ireland (SFI)en
dc.contributor.sponsorGrantNumberSFI/12/RC/2278en
dc.contributor.sponsorScience Foundation Ireland (SFI for RF)en
dc.contributor.sponsorGrantNumberSFI/11/PI/1087en
dc.contributor.sponsorEuropean Union (EU)en
dc.contributor.sponsorGrantNumber604391en
dc.contributor.sponsorEuropean Research Council (ERC)en
dc.identifier.urihttp://hdl.handle.net/2262/93607


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