Dual carbon potassium-ion capacitors: biomass-derived graphene-like carbon nanosheet cathodes

Simple item page
dc.contributor.authorPham, H.D.
dc.contributor.authorMahale, K.
dc.contributor.authorHoang, T.M.L.
dc.contributor.authorMundree, S.G.
dc.contributor.authorGomez-Romero, P.
dc.contributor.authorDubal, D.P.
dc.date.issued2020
dc.description.abstractPotassium-ion storage devices are attracting tremendous attention for wide-ranging applications on account of their low cost, fast charge transport in electrolytes, and large working voltage. However, developing cost-effective, high-energy electrodes with excellent structural stability to ensure long-term cycling performance is a major challenge. In this contribution, we have derived two different forms of carbon materials from almond shells using different chemical treatments. For instance, hard carbon (HC) and graphene-like activated carbon (AC) nanosheets are developed by employing simple carbonization and chemical activation routes, respectively. The resultant hard carbon (AS-HC) and activated carbon (AS-AC) exhibit outstanding electrochemical performance as negative and positive electrodes in a potassium-ion battery (KIB), respectively, through their tailor-made surface properties. These promising benefits pave a way to construct a biomass-derived carbon potassium-ion capacitor (KIC) by employing AS-HC as the negative electrode and AS-AC as the positive electrode in a K-based electrolyte. The as-fabricated KIC delivers a reasonable specific energy of 105 Wh/kg and excellent cycling life with negligible capacitance fading over 10 000 cycles. This "waste-to-wealth" approach can promote the development of sustainable KICs at low cost and inspire their use for fast-rate K-based energy storage applications.
dc.description.statementofresponsibilityHong Duc Pham, Kiran Mahale, Thi My Linh Hoang, Sagadevan G. Mundree, Pedro Gomez-Romero and Deepak P. Dubal
dc.identifier.citationACS applied materials & interfaces, 2020; 12(43):48518-48525
dc.identifier.doi10.1021/acsami.0c12379
dc.identifier.issn1944-8244
dc.identifier.issn1944-8252
dc.identifier.orcidDubal, D.P. [0000-0002-2337-676X]
dc.identifier.urihttp://hdl.handle.net/2440/131586
dc.language.isoen
dc.publisherACS Publications
dc.relation.granthttp://purl.org/au-research/grants/arc/FT180100058
dc.rights© 2020 American Chemical Society
dc.source.urihttps://doi.org/10.1021/acsami.0c12379
dc.subjectbiomass waste
dc.subjectgraphene-like carbon
dc.subjecthard carbon
dc.subjecthigh energy
dc.subjecthigh power
dc.subjectpotassium-ion capacitor
dc.titleDual carbon potassium-ion capacitors: biomass-derived graphene-like carbon nanosheet cathodes
dc.typeJournal article
pubs.publication-statusPublished

Files

Collections

Chemical Engineering publications
ARC Research Hub for Graphene Enabled Industry Transformation publications