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Article: An electrodeposition approach to metal/metal oxide heterostructures for active hydrogen evolution catalysts in near-neutral electrolytes

TitleAn electrodeposition approach to metal/metal oxide heterostructures for active hydrogen evolution catalysts in near-neutral electrolytes
Authors
Keywordscatalysis
chemical mapping
hydrogen evolution
nanostructured materials
water splitting
Issue Date2019
Citation
Nano Research, 2019 How to Cite?
AbstractNeutral water splitting is attractive for its use of non-corrosive and environmentally friendly electrolytes. However, catalyst development for hydrogen and oxygen evolution remains a challenge under neutral conditions. Here we report a simple electrodeposition and reductive annealing procedure to produce a highly active Ni-Co-Cr metal/metal oxide heterostructured catalyst directly on Ni foam. The resulting electrocatalyst for hydrogen evolution reaction (HER) requires only 198 mV of overpotential to reach 100 mA/cm 2 in 1 M potassium phosphate (pH = 7.4) and can operate for at least two days without significant performance decay. Scanning transmission electron microscopy coupled with electron energy loss spectroscopy (STEM-EELS) imaging reveals a Ni-Co alloy core decorated with blended oxides layers of NiO, CoO and Cr 2 O 3 . The metal/metal oxide interfaces are suggested to be responsible for the high HER activity. [Figure not available: see fulltext.].
Persistent Identifierhttp://hdl.handle.net/10722/334586
ISSN
2023 Impact Factor: 9.5
2023 SCImago Journal Rankings: 2.539
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorKenney, Michael J.-
dc.contributor.authorHuang, Jianan Erick-
dc.contributor.authorZhu, Yong-
dc.contributor.authorMeng, Yongtao-
dc.contributor.authorXu, Mingquan-
dc.contributor.authorZhu, Guanzhou-
dc.contributor.authorHung, Wei Hsuan-
dc.contributor.authorKuang, Yun-
dc.contributor.authorLin, Mengchang-
dc.contributor.authorSun, Xiaoming-
dc.contributor.authorZhou, Wu-
dc.contributor.authorDai, Hongjie-
dc.date.accessioned2023-10-20T06:49:12Z-
dc.date.available2023-10-20T06:49:12Z-
dc.date.issued2019-
dc.identifier.citationNano Research, 2019-
dc.identifier.issn1998-0124-
dc.identifier.urihttp://hdl.handle.net/10722/334586-
dc.description.abstractNeutral water splitting is attractive for its use of non-corrosive and environmentally friendly electrolytes. However, catalyst development for hydrogen and oxygen evolution remains a challenge under neutral conditions. Here we report a simple electrodeposition and reductive annealing procedure to produce a highly active Ni-Co-Cr metal/metal oxide heterostructured catalyst directly on Ni foam. The resulting electrocatalyst for hydrogen evolution reaction (HER) requires only 198 mV of overpotential to reach 100 mA/cm 2 in 1 M potassium phosphate (pH = 7.4) and can operate for at least two days without significant performance decay. Scanning transmission electron microscopy coupled with electron energy loss spectroscopy (STEM-EELS) imaging reveals a Ni-Co alloy core decorated with blended oxides layers of NiO, CoO and Cr 2 O 3 . The metal/metal oxide interfaces are suggested to be responsible for the high HER activity. [Figure not available: see fulltext.].-
dc.languageeng-
dc.relation.ispartofNano Research-
dc.subjectcatalysis-
dc.subjectchemical mapping-
dc.subjecthydrogen evolution-
dc.subjectnanostructured materials-
dc.subjectwater splitting-
dc.titleAn electrodeposition approach to metal/metal oxide heterostructures for active hydrogen evolution catalysts in near-neutral electrolytes-
dc.typeArticle-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1007/s12274-019-2379-7-
dc.identifier.scopuseid_2-s2.0-85064265311-
dc.identifier.eissn1998-0000-
dc.identifier.isiWOS:000469405300026-

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