RuO2–WO3/PAni: combining the best of two classes of materials for a new energy storage device

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dc.contributor.authorde Aquino C.B.
dc.contributor.authorFonsaca J.E.S.
dc.contributor.authorDomingues S.H.
dc.date.accessioned2024-03-12T19:09:52Z
dc.date.available2024-03-12T19:09:52Z
dc.date.issued2023
dc.description.abstract© 2023, The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.In this work, we show the preparation of an energy storage device based on the combination of two distinct classes of materials, mixed transition metal oxides (MTMO) and conductive polymers. Thus, we investigated different proportions between Ru and W precursors to obtain RuO2–WO3, MTMO, proper for energy storage applications. After several characterizations, we were able to evidence W insertion on Ru structure for RuO2–WO3 1:5 and correlate it to the best specific capacitance found (661 mF cm−2 at 1.0 mA cm−2). Targeting at improved results, we combined the most promising MTMO settled with another class of pseudocapacitive material, the polyaniline (PAni). RuO2–WO3 1:5/PAni nanocomposite was synthesized and, after being properly characterized, the attested synergistic effects of components led to a material with superlative capacitive properties, whose capacitance values at 50 µA cm−2 reached up to 937 mF cm−2. With the evidence of this representative value, a symmetrical energy storage device was built and values comparable to commercial ones were accomplished (241 mF cm−2). These remarkable results attested that MTMOs wisely architected may offer richer redox reactions and that, through the rational design of nanocomposites, electrochemical capabilities may be impressively broaden, hence comprising a promising cost-effective alternative for energy storage devices. Graphical abstract: [Figure not available: see fulltext.].
dc.description.firstpage6694
dc.description.issuenumber15
dc.description.lastpage6709
dc.description.volume58
dc.identifier.doi10.1007/s10853-023-08426-2
dc.identifier.issn1573-4803
dc.identifier.urihttps://dspace.mackenzie.br/handle/10899/34091
dc.relation.ispartofJournal of Materials Science
dc.rightsAcesso Restrito
dc.titleRuO2–WO3/PAni: combining the best of two classes of materials for a new energy storage device
dc.typeArtigo
local.scopus.citations1
local.scopus.eid2-s2.0-85152091403
local.scopus.subjectConductive Polymer
local.scopus.subjectDifferent proportions
local.scopus.subjectEnergy storage applications
local.scopus.subjectNew energies
local.scopus.subjectPolyaniline nanocomposites
local.scopus.subjectPseudo-capacitive materials
local.scopus.subjectSpecific capacitance
local.scopus.subjectSynergistic effect
local.scopus.subjectSynthesised
local.scopus.subjectTransition-metal oxides
local.scopus.updated2025-04-01
local.scopus.urlhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85152091403&origin=inward
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