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dc.contributor.authorAdekoya, D
dc.contributor.authorZhang, S
dc.contributor.authorHankel, M
dc.date.accessioned2021-03-24T04:30:53Z
dc.date.available2021-03-24T04:30:53Z
dc.date.issued2021
dc.identifier.issn0008-6223en_US
dc.identifier.doi10.1016/j.carbon.2021.02.050en_US
dc.identifier.urihttp://hdl.handle.net/10072/403379
dc.description.abstractGraphitic carbon nitride (C3N4) is the most widely reported member of the carbon nitride family because of its large pores which serve as alkali-metal atom storage sites. However, adsorption of Li atoms into these triangular pore sites occur at a high adsorption energy (Ead) of ∼4.2 eV which surpasses the desorption energy of bulk Li (3 eV) thereby resulting in ineffective desorption. Lithium storage in C3N4 occurs via an intercalation/deintercalation process therefore the inability of adsorbed Li atoms to desorb from its structure results in structural instability, poor conductivity and limited reversible capacity. Here, we show that by doping Si atoms into the pore sites of C3N4, the Li Ead can be significantly decreased to 2.51 eV. This suitable Ead enabled effective Li transport, improved charge transfer, modulated the electronic conductivity, decreased the Li diffusion barrier and boosted the lithium storage capacity to 557.7 mAh/g. These results show that Si doping is an effective way to resolve the problems associated with C3N4 and to achieve superior electronic properties and lithium storage capacity. These interesting results show the potential of Si doped C3N4 for lithium ion batteries and this approach can be extended to other carbon nitride structures.en_US
dc.description.peerreviewedYesen_US
dc.languageenen_US
dc.publisherElsevier BVen_US
dc.relation.ispartofpagefrom480en_US
dc.relation.ispartofpageto487en_US
dc.relation.ispartofjournalCarbonen_US
dc.relation.ispartofvolume176en_US
dc.subject.fieldofresearchPhysical Sciencesen_US
dc.subject.fieldofresearchChemical Sciencesen_US
dc.subject.fieldofresearchEngineeringen_US
dc.subject.fieldofresearchcode02en_US
dc.subject.fieldofresearchcode03en_US
dc.subject.fieldofresearchcode09en_US
dc.titleBoosting reversible lithium storage in two-dimensional C3N4 by achieving suitable adsorption energy via Si dopingen_US
dc.typeJournal articleen_US
dc.type.descriptionC1 - Articlesen_US
dcterms.bibliographicCitationAdekoya, D; Zhang, S; Hankel, M, Boosting reversible lithium storage in two-dimensional C3N4 by achieving suitable adsorption energy via Si doping, Carbon, 2021, 176, pp. 480-487en_US
dc.date.updated2021-03-24T00:38:42Z
gro.hasfulltextNo Full Text
gro.griffith.authorZhang, Shanqing


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