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From manganese oxide to manganese sulphide: Synthesis and its effect on electrochemical energy storage performance

2021-09-01Journal article Restricted access
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dc.contributor.authorAlmeida, M. M.
dc.contributor.authorMás, A. A.
dc.contributor.authorMoura E Silva, Teresa
dc.contributor.authorMONTEMOR, M.F
dc.date.accessioned2022-07-07T08:39:45Z
dc.date.available2022-07-07T08:39:45Z
dc.date.issued2021-09-01
dc.description.abstractHigh power pseudocapacitors are extremely relevant to answer specific needs in the current energy transition arena and to implement an efficient renewable energy society. However, literature shows that are still open gaps concerning improvement of their energy density at high power, conversion efficiency, cost and cycle life. Electrodes based on active transition metal compounds, and in particular metal sulphides, evidence high potential to meet these objectives. This work discusses the dependence on the synthesis route of the charge storage mechanism of manganese sulphide-based materials and relates the pseudocapacitive response of these electrodes with their polycrystalline nature. Results reveal that a manganese oxy-sulphide mixture can achieve a high specific capacitance of 231 F.g−1 at 0.5 A/g in a 0.65 V active window. These values represent a 31.5 % increase compared to pure rambergite, γ-MnS, and 436 % compared to pure hausmannite Mn3O4 prepared under the same conditions. Moreover, the results show that manganese oxy-sulphide electrodes are characterized by good charge retention (73%), and superior long term capacity retention (above 86%) after 5000 cycles, evidencing potential for high power energy storage applications.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationALMEIDA, M. M.; [et al] – From manganese oxide to manganese sulphide: Synthesis and its effect on electrochemical energy storage performance. Electrochimica Acta. ISSN 0013-4686. Vol. 389 (2021), pp. 1-11.pt_PT
dc.identifier.doi10.1016/j.electacta.2021.138711pt_PT
dc.identifier.issn0013-4686
dc.identifier.urihttp://hdl.handle.net/10400.21/14797
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relationExploring plasma driven assembling of graphene based hybrid nanostructures
dc.relationCentro de Química Estrutural
dc.relationCentro de Química Estrutural
dc.relation.publisherversionhttps://www.sciencedirect.com/science/article/pii/S001346862101001Xpt_PT
dc.subjectElectrochemical energy storagept_PT
dc.subjectSupercapacitorspt_PT
dc.subjectManganese oxidept_PT
dc.subjectManganese sulphidept_PT
dc.titleFrom manganese oxide to manganese sulphide: Synthesis and its effect on electrochemical energy storage performancept_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleExploring plasma driven assembling of graphene based hybrid nanostructures
oaire.awardTitleCentro de Química Estrutural
oaire.awardTitleCentro de Química Estrutural
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/PTDC%2FNAN-MAT%2F30565%2F2017/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/9471 - RIDTI/PTDC%2FQUI-ELT%2F28299%2F2017/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F00100%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDP%2F00100%2F2020/PT
oaire.citation.endPage11pt_PT
oaire.citation.startPage1pt_PT
oaire.citation.titleElectrochimica Actapt_PT
oaire.citation.volume389pt_PT
oaire.fundingStream3599-PPCDT
oaire.fundingStream9471 - RIDTI
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
person.familyNameMoura e Silva
person.familyNameMONTEMOR
person.givenNameTeresa
person.givenNameFATIMA
person.identifier572597
person.identifier.ciencia-id2D17-B93D-44BC
person.identifier.ciencia-id3C16-79AA-7E94
person.identifier.orcid0000-0001-8402-6600
person.identifier.orcid0000-0001-7835-6814
person.identifier.ridF-8778-2014
person.identifier.scopus-author-id6506601258
person.identifier.scopus-author-id7004347821
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsclosedAccesspt_PT
rcaap.typearticlept_PT
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