Push-Pull Electronic Effects in Surface-Active Sites Enhance Electrocatalytic Oxygen Evolution on Transition Metal Oxides
© 2021 Wiley-VCH GmbH..
Sustainable electrocatalysis of the oxygen evolution reaction (OER) constitutes a major challenge for the realization of green fuels. Oxides based on Ni and Fe in alkaline media have been proposed to avoid using critical raw materials. However, their ill-defined structures under OER conditions make the identification of key descriptors difficult. Here, we have studied Fe-Ni-Zn spinel oxides, with a well-defined crystal structure, as a platform to obtain general understanding on the key contributions. The OER reaches maximum performance when: (i) Zn is present in the Spinel structure, (ii) very dense, equimolar 1 : 1 : 1 stoichiometry sites appear on the surface as they allow the formation of oxygen vacancies where Zn favors pushing the electronic density that is pulled by the octahedral Fe and tetrahedral Ni redox pair lowering the overpotential. Our work proves cooperative electronic effects on surface active sites as key to design optimum OER electrocatalysts.
| Medienart: |
E-Artikel |
|---|
| Erscheinungsjahr: |
2021 |
|---|---|
| Erschienen: |
2021 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:14 |
|---|---|
| Enthalten in: |
ChemSusChem - 14(2021), 6 vom: 22. März, Seite 1595-1601 |
| Sprache: |
Englisch |
|---|
| Beteiligte Personen: |
Garcés-Pineda, Felipe Andrés [VerfasserIn] |
|---|
| Links: |
|---|
| Themen: |
Descriptors |
|---|
| Anmerkungen: |
Date Revised 23.03.2021 published: Print-Electronic Citation Status PubMed-not-MEDLINE |
|---|
| doi: |
10.1002/cssc.202002782 |
|---|
| funding: |
|
|---|---|
| Förderinstitution / Projekttitel: |
|
| PPN (Katalog-ID): |
NLM320735834 |
|---|
| LEADER | 01000naa a22002652 4500 | ||
|---|---|---|---|
| 001 | NLM320735834 | ||
| 003 | DE-627 | ||
| 005 | 20231225174224.0 | ||
| 007 | cr uuu---uuuuu | ||
| 008 | 231225s2021 xx |||||o 00| ||eng c | ||
| 024 | 7 | |a 10.1002/cssc.202002782 |2 doi | |
| 028 | 5 | 2 | |a pubmed24n1069.xml |
| 035 | |a (DE-627)NLM320735834 | ||
| 035 | |a (NLM)33512070 | ||
| 040 | |a DE-627 |b ger |c DE-627 |e rakwb | ||
| 041 | |a eng | ||
| 100 | 1 | |a Garcés-Pineda, Felipe Andrés |e verfasserin |4 aut | |
| 245 | 1 | 0 | |a Push-Pull Electronic Effects in Surface-Active Sites Enhance Electrocatalytic Oxygen Evolution on Transition Metal Oxides |
| 264 | 1 | |c 2021 | |
| 336 | |a Text |b txt |2 rdacontent | ||
| 337 | |a ƒaComputermedien |b c |2 rdamedia | ||
| 338 | |a ƒa Online-Ressource |b cr |2 rdacarrier | ||
| 500 | |a Date Revised 23.03.2021 | ||
| 500 | |a published: Print-Electronic | ||
| 500 | |a Citation Status PubMed-not-MEDLINE | ||
| 520 | |a © 2021 Wiley-VCH GmbH. | ||
| 520 | |a Sustainable electrocatalysis of the oxygen evolution reaction (OER) constitutes a major challenge for the realization of green fuels. Oxides based on Ni and Fe in alkaline media have been proposed to avoid using critical raw materials. However, their ill-defined structures under OER conditions make the identification of key descriptors difficult. Here, we have studied Fe-Ni-Zn spinel oxides, with a well-defined crystal structure, as a platform to obtain general understanding on the key contributions. The OER reaches maximum performance when: (i) Zn is present in the Spinel structure, (ii) very dense, equimolar 1 : 1 : 1 stoichiometry sites appear on the surface as they allow the formation of oxygen vacancies where Zn favors pushing the electronic density that is pulled by the octahedral Fe and tetrahedral Ni redox pair lowering the overpotential. Our work proves cooperative electronic effects on surface active sites as key to design optimum OER electrocatalysts | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a descriptors | |
| 650 | 4 | |a mixed metal oxides | |
| 650 | 4 | |a oxygen vacancy | |
| 650 | 4 | |a spinels | |
| 650 | 4 | |a water splitting | |
| 700 | 1 | |a Chuong Nguyën, Huu |e verfasserin |4 aut | |
| 700 | 1 | |a Blasco-Ahicart, Marta |e verfasserin |4 aut | |
| 700 | 1 | |a García-Tecedor, Miguel |e verfasserin |4 aut | |
| 700 | 1 | |a de Fez Febré, Mabel |e verfasserin |4 aut | |
| 700 | 1 | |a Tang, Peng-Yi |e verfasserin |4 aut | |
| 700 | 1 | |a Arbiol, Jordi |e verfasserin |4 aut | |
| 700 | 1 | |a Giménez, Sixto |e verfasserin |4 aut | |
| 700 | 1 | |a Galán-Mascarós, José Ramón |e verfasserin |4 aut | |
| 700 | 1 | |a López, Núria |e verfasserin |4 aut | |
| 773 | 0 | 8 | |i Enthalten in |t ChemSusChem |d 2008 |g 14(2021), 6 vom: 22. März, Seite 1595-1601 |w (DE-627)NLM180697102 |x 1864-564X |7 nnns |
| 773 | 1 | 8 | |g volume:14 |g year:2021 |g number:6 |g day:22 |g month:03 |g pages:1595-1601 |
| 856 | 4 | 0 | |u http://dx.doi.org/10.1002/cssc.202002782 |3 Volltext |
| 912 | |a GBV_USEFLAG_A | ||
| 912 | |a GBV_NLM | ||
| 951 | |a AR | ||
| 952 | |d 14 |j 2021 |e 6 |b 22 |c 03 |h 1595-1601 | ||