File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Lattice oxygen activation enabled by high-valence metal sites for enhanced water oxidation

TitleLattice oxygen activation enabled by high-valence metal sites for enhanced water oxidation
Authors
Issue Date2020
Citation
Nature Communications, 2020, v. 11, n. 1, article no. 4066 How to Cite?
AbstractAnodic oxygen evolution reaction (OER) is recognized as kinetic bottleneck in water electrolysis. Transition metal sites with high valence states can accelerate the reaction kinetics to offer highly intrinsic activity, but suffer from thermodynamic formation barrier. Here, we show subtle engineering of highly oxidized Ni4+ species in surface reconstructed (oxy)hydroxides on multicomponent FeCoCrNi alloy film through interatomically electronic interplay. Our spectroscopic investigations with theoretical studies uncover that Fe component enables the formation of Ni4+ species, which is energetically favored by the multistep evolution of Ni2+→Ni3+→Ni4+. The dynamically constructed Ni4+ species drives holes into oxygen ligands to facilitate intramolecular oxygen coupling, triggering lattice oxygen activation to form Fe-Ni dual-sites as ultimate catalytic center with highly intrinsic activity. As a result, the surface reconstructed FeCoCrNi OER catalyst delivers outstanding mass activity and turnover frequency of 3601 A gmetal−1 and 0.483 s−1 at an overpotential of 300 mV in alkaline electrolyte, respectively.
Persistent Identifierhttp://hdl.handle.net/10722/326234
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorZhang, Ning-
dc.contributor.authorFeng, Xiaobin-
dc.contributor.authorRao, Dewei-
dc.contributor.authorDeng, Xi-
dc.contributor.authorCai, Lejuan-
dc.contributor.authorQiu, Bocheng-
dc.contributor.authorLong, Ran-
dc.contributor.authorXiong, Yujie-
dc.contributor.authorLu, Yang-
dc.contributor.authorChai, Yang-
dc.date.accessioned2023-03-09T09:59:06Z-
dc.date.available2023-03-09T09:59:06Z-
dc.date.issued2020-
dc.identifier.citationNature Communications, 2020, v. 11, n. 1, article no. 4066-
dc.identifier.urihttp://hdl.handle.net/10722/326234-
dc.description.abstractAnodic oxygen evolution reaction (OER) is recognized as kinetic bottleneck in water electrolysis. Transition metal sites with high valence states can accelerate the reaction kinetics to offer highly intrinsic activity, but suffer from thermodynamic formation barrier. Here, we show subtle engineering of highly oxidized Ni4+ species in surface reconstructed (oxy)hydroxides on multicomponent FeCoCrNi alloy film through interatomically electronic interplay. Our spectroscopic investigations with theoretical studies uncover that Fe component enables the formation of Ni4+ species, which is energetically favored by the multistep evolution of Ni2+→Ni3+→Ni4+. The dynamically constructed Ni4+ species drives holes into oxygen ligands to facilitate intramolecular oxygen coupling, triggering lattice oxygen activation to form Fe-Ni dual-sites as ultimate catalytic center with highly intrinsic activity. As a result, the surface reconstructed FeCoCrNi OER catalyst delivers outstanding mass activity and turnover frequency of 3601 A gmetal−1 and 0.483 s−1 at an overpotential of 300 mV in alkaline electrolyte, respectively.-
dc.languageeng-
dc.relation.ispartofNature Communications-
dc.titleLattice oxygen activation enabled by high-valence metal sites for enhanced water oxidation-
dc.typeArticle-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1038/s41467-020-17934-7-
dc.identifier.pmid32792524-
dc.identifier.scopuseid_2-s2.0-85089365394-
dc.identifier.volume11-
dc.identifier.issue1-
dc.identifier.spagearticle no. 4066-
dc.identifier.epagearticle no. 4066-
dc.identifier.eissn2041-1723-
dc.identifier.isiWOS:000564248600004-

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats