scholarly journals Uncovering the prominent role of metal ions in octahedral versus tetrahedral sites of cobalt–zinc oxide catalysts for efficient oxidation of water

2016 ◽  
Vol 4 (25) ◽  
pp. 10014-10022 ◽  
Author(s):  
Prashanth W. Menezes ◽  
Arindam Indra ◽  
Arno Bergmann ◽  
Petko Chernev ◽  
Carsten Walter ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Metal Ions ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Comprehensive Analysis ◽  
Surface Structures ◽  
Near Surface ◽  
Tetrahedral Sites ◽  
Tremendous Impact

The tremendous impact of tetrahedral versus octahedral metal sites on the superior electrocatalytic performance of ZnCo2O4 for the oxygen evolution reaction has been elucidated through comprehensive analysis of bulk and near-surface structures.

Dual Role of Deep Eutectic Solvent as a Solvent and Template for the Synthesis of Octahedral Cobalt Vanadate for an Oxygen Evolution Reaction

2018 ◽  
Vol 6 (12) ◽  
pp. 16255-16266 ◽  
Author(s):  
Gaurav M. Thorat ◽  
Harsharaj S. Jadhav ◽  
Animesh Roy ◽  
Wook-Jin Chung ◽  
Jeong Gil Seo
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Deep Eutectic Solvent ◽  
Dual Role

The role of selenium vacancies in the enhancement of electrocatalytic activity of CoNiSe2 for the oxygen evolution reaction

2021 ◽  
Vol 514 ◽  
pp. 230596
Author(s):  
Abdelhadi El Jaouhari ◽  
Amine Slassi ◽  
Bowen Zhang ◽  
Anton Pershin ◽  
Wei Liu ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Electrocatalytic Activity

scholarly journals Stability profiles of transition metal oxides in the oxygen evolution reaction in alkaline medium

2019 ◽  
Vol 7 (45) ◽  
pp. 25865-25877 ◽  
Author(s):  
Aliki Moysiadou ◽  
Xile Hu
Keyword(s):  
Transition Metal ◽  
Metal Ions ◽  
Metal Oxides ◽  
Oxygen Evolution ◽  
Alkaline Medium ◽  
Transition Metal Oxides ◽  
Oxygen Evolution Reaction ◽  
Electrolyte Solutions ◽  
Compositional Changes ◽  
Dynamic Exchange

Metal oxides undergo compositional changes due to a dynamic exchange of metal ions with the electrolyte solutions during the oxygen evolution reaction.

Stabilizing role of Mo in TiO2-MoOx supported Ir catalyst toward oxygen evolution reaction

2021 ◽  
Vol 280 ◽  
pp. 119433 ◽  
Author(s):  
Eom-Ji Kim ◽  
Jaewook Shin ◽  
Junu Bak ◽  
Sang Jae Lee ◽  
Ki hyun Kim ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction

The Role of Surface States in the Oxygen Evolution Reaction on Hematite

2014 ◽  
Vol 126 (49) ◽  
pp. 13622-13626 ◽  
Author(s):  
Beniamino Iandolo ◽  
Anders Hellman
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Surface States

scholarly journals Fe-Doping in Double Perovskite PrBaCo2(1-x)Fe2xO6-δ: Insights into Structural and Electronic Effects to Enhance Oxygen Evolution Catalyst Stability

Catalysts ◽  
2019 ◽  
Vol 9 (3) ◽  
pp. 263 ◽  
Author(s):  
Bae-Jung Kim ◽  
Emiliana Fabbri ◽  
Ivano Castelli ◽  
Mario Borlaf ◽  
Thomas Graule ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Double Perovskite ◽  
Alkaline Media ◽  
Catalyst Stability ◽  
Electronic Effects ◽  
Single Transition ◽  
Charge Stability ◽  
X Ray Absorption

Perovskite oxides have been gaining attention for its capability to be designed as an ideal electrocatalyst for oxygen evolution reaction (OER). Among promising candidates, the layered double perovskite—PrBaCo2O6-δ (PBC)—has been identified as the most active perovskite electrocatalyst for OER in alkaline media. For a single transition metal oxide catalyst, the addition of Fe enhances its electrocatalytic performance towards OER. To understand the role of Fe, herein, Fe is incorporated in PBC in different ratios, which yielded PrBaCo2(1-x)Fe2xCo6-δ (x = 0, 0.2 and 0.5). Fe-doped PBCF’s demonstrate enhanced OER activities and stabilities. Operando X-ray absorption spectroscopy (XAS) revealed that Co is more stable in a lower oxidation state upon Fe incorporation by establishing charge stability. Hence, the degradation of Co is inhibited such that the perovskite structure is prolonged under the OER conditions, which allows it to serve as a platform for the oxy(hydroxide) layer formation. Overall, our findings underline synergetic effects of incorporating Fe into Co-based layered double perovskite in achieving a higher activity and stability during oxygen evolution reaction.

scholarly journals Cocatalysis: Role of Organic Cations in Oxygen Evolution Reaction on Oxide Electrodes

2018 ◽  
Vol 10 (32) ◽  
pp. 26825-26829 ◽  
Author(s):  
Marija R. Zoric ◽  
Usha Pandey Kadel ◽  
Ksenija D. Glusac
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Organic Cations ◽  
Oxide Electrodes

scholarly journals Role of electrolyte composition on the acid stability of mixed-metal oxygen evolution catalysts

2020 ◽  
Vol 56 (72) ◽  
pp. 10477-10480
Author(s):  
Nancy Li ◽  
Thomas P. Keane ◽  
Samuel S. Veroneau ◽  
Daniel G. Nocera
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Electrolyte Composition ◽  
Acid Stability ◽  
Mixed Metal ◽  
Catalyst Composition

Acid stability in catalysts that promote the oxygen evolution reaction (OER) involves an interplay between electrolyte and catalyst composition, both of which must be judiciously selected in order to promote activity and durability.

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