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In Situ Reconstruction of High‐Entropy Heterostructure Catalysts for Stable Oxygen Evolution Electrocatalysis under Industrial Conditions

2024-01-03Artigo científico Acesso aberto
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dc.contributor.authorHu, Jue
dc.contributor.authorGuo, Tianqi
dc.contributor.authorZhong, Xinyu
dc.contributor.authorLi, Jiong
dc.contributor.authorMei, Yunjie
dc.contributor.authorZhang, Chengxu
dc.contributor.authorFeng, Yuebin
dc.contributor.authorSun, Mingzi
dc.contributor.authorMeng, Lijian
dc.contributor.authorWang, Zhiyuan
dc.contributor.authorHuang, Bolong
dc.contributor.authorZhang, Libo
dc.contributor.authorWang, Zhongchang
dc.date.accessioned2024-01-25T09:28:42Z
dc.date.available2024-01-25T09:28:42Z
dc.date.issued2024-01-03
dc.description.abstractDespite of urgent needs for highly stable and efficient electrochemical water-splitting devices, it remains extremely challenging to acquire highly stable oxygen evolution reaction (OER) electrocatalysts under harsh industrial conditions. Here, a successful in situ synthesis of FeCoNiMnCr high-entropy alloy (HEA) and high-entropy oxide (HEO) heterocatalysts via a Cr-induced spontaneous reconstruction strategy is reported, and it is demonstrated that they deliver excellent ultrastable OER electrocatalytic performance with a low overpotential of 320 mV at 500 mA cm−2 and a negligible activity loss after maintaining at 100 mA cm−2 for 240 h. Remarkably, the heterocatalyst holds outstanding long-term stability under harsh industrial condition of 6 m KOH and 85 °C at a current density of as high as 500 mA cm−2 over 500 h. Density functional theory calculations reveal that the formation of the HEA-HEO heterostructure can provide electroactive sites possessing robust valence states to guarantee long-term stable OER process, leading to the enhancement of electroactivity. The findings of such highly stable OER heterocatalysts under industrial conditions offer a new perspective for designing and constructing efficient high-entropy electrocatalysts for practical industrial water splitting.en
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1002/adma.202310918pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.22/24658
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.titleIn Situ Reconstruction of High‐Entropy Heterostructure Catalysts for Stable Oxygen Evolution Electrocatalysis under Industrial Conditionspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.titleAdvanced Materialspt_PT
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT

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