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dc.contributor.authorLu, Pai
dc.contributor.authorChen, Xuyuan
dc.date.accessioned2024-02-12T14:15:30Z
dc.date.available2024-02-12T14:15:30Z
dc.date.created2021-12-03T10:37:17Z
dc.date.issued2021
dc.identifier.citationLu, P., & Chen, X. (2021). Nanoscale hetero-structured Co−Co(OH)2 composite/amorphous carbon core/shell bi-functional electrocatalysts electrochemically evolved from metastable hexagonal-phase cobalt for overall water splitting. Electrochimica Acta, 386, Artikkel 138517.en_US
dc.identifier.issn0013-4686
dc.identifier.urihttps://hdl.handle.net/11250/3117063
dc.description.abstractBi-functional electrocatalysts suited to alkaline water splitting systems are highly pursued, towards the most realistic application enabled by simplified electrolyzer design and cost-effective operation. Herein, a novel nanocomposite Co−Co(OH)2/C electrocatalyst with nanoscale hetero-structured metastable hexagonal-phase Co (H-Co) crystallites and Co(OH)2 crystallites encapsulated by amorphous carbon shells is developed. We employ a mild thermal decomposition route coupled with in-situ carbon deposition performed at 400 °C to prepare H-Co/C core/shell structured precursor. In a following controllable electrochemical transformation at room temperature the partial conversion of the metastable H-Co to Co(OH)2 leads to the mutual embedding of nanoscale crystalline H-Co and Co(OH)2 confined in the amorphous carbon shells. Taking advantage of the nanowire array morphology, carbon coated core/shell structure, nanoscale size, and the synergistic H-Co and Co(OH)2 bi-components, an outstanding bi-functional electrocatalytic performance for overall water splitting is attained with proved small overpotentials (93 mV for hydrogen evolution reaction, 264 mV for oxygen evolution reaction at 10 mA cm−2).en_US
dc.language.isoengen_US
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internasjonal*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/deed.no*
dc.titleNanoscale hetero-structured Co-Co(OH)2 composite/amorphous carbon core/shell bi-functional electrocatalysts electrochemically evolved from metastable hexagonal-phase cobalt for overall water splittingen_US
dc.title.alternativeNanoscale hetero-structured Co-Co(OH)(2) composite/amorphous carbon core/shell bi-functional electrocatalysts electrochemically evolved from metastable hexagonal-phase cobalt for overall water splittingen_US
dc.typePeer revieweden_US
dc.typeJournal articleen_US
dc.description.versionacceptedVersionen_US
dc.rights.holderExcept where otherwise noted, this item's license is described as Attribution- NonCommercial-NoDerivatives 4.0 Internasjonal.en_US
dc.source.volume386en_US
dc.source.journalElectrochimica Actaen_US
dc.identifier.doihttps://doi.org/10.1016/j.electacta.2021.138517
dc.identifier.cristin1964084
dc.source.articlenumber138517en_US
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode2


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Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal
Except where otherwise noted, this item's license is described as Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal