A structural investigation of stabilized oxygen evolution catalysts

Hutchings, R.; Müller, Kathrin; Kötz, R.; Stucki, Samuel

doi:10.1007/bf00980762

Cited by 133 publications

(106 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Ruthenium-iridium oxide showed improved electronic properties and suppressed the formation of RuO 4 ; alloying the above two metals with tantalum (Ta) enhanced OER kinetics and the addition of tin (Sn) resulted in a metastable mixed oxide. 86,87 Recently, Ru-rich Pt electrocatalysts and titanium (Ti)-or titanium carbide (TiC)-supported electrocatalysts for OER have been suggested. 88,89 Bifunctional electrocatalysts, which can work for both oxygen evolution and oxygen reduction, have also been proposed for water electrolysis.…”

Section: ) (24)mentioning

confidence: 99%

Hydrogen production by alkaline water electrolysis

Santos¹,

Sequeira²,

Figueiredo³

2013

Quím. Nova

375

226

View full text Add to dashboard Cite

Recebido em 13/12/12; aceito em 28/5/13; publicado na web em 17/7/13Water electrolysis is one of the simplest methods used for hydrogen production. It has the advantage of being able to produce hydrogen using only renewable energy. To expand the use of water electrolysis, it is mandatory to reduce energy consumption, cost, and maintenance of current electrolyzers, and, on the other hand, to increase their efficiency, durability, and safety. In this study, modern technologies for hydrogen production by water electrolysis have been investigated. In this article, the electrochemical fundamentals of alkaline water electrolysis are explained and the main process constraints (e.g., electrical, reaction, and transport) are analyzed. The historical background of water electrolysis is described, different technologies are compared, and main research needs for the development of water electrolysis technologies are discussed.

show abstract

Section: ) (24)mentioning

confidence: 99%

Hydrogen production by alkaline water electrolysis

Santos¹,

Sequeira²,

Figueiredo³

2013

Quím. Nova

375

226

View full text Add to dashboard Cite

show abstract

“…This is then annealed at 340 o C -to produce the metal oxide (Cheng, 2009. This method has been used successfully for the preparation of several anode catalysts in PEM water electrolytic systems (Hutchings et al, 1984); and it was found to be convenient and fast for the screening of different catalysts.…”

Section: Preparation Of the Working Electrode Surfacementioning

confidence: 99%

Voltammetric Characterization Methods for the PEM Evaluation of Catalysts

Gouws¹

2012

Electrolysis

View full text Add to dashboard Cite

“…Here we investigate Sb-doped SnO 2 as a support material due to its electrical conductivity and stability in acidic conditions [8]. Furthermore, it has been shown that SnO 2 improves the stability of IrO 2 -RuO 2 anodes during oxygen evolution, even though XRD revealed little mixing of the SnO 2 with the IrO 2 -RuO 2 [1]. This finding suggests that similar improvements in stability might be expected for Sb-doped SnO 2 supported Ir x Ru 1−x O 2 .…”

Section: Introductionmentioning

confidence: 99%

“…These protons are reduced at the cathode to hydrogen gas after travelling through the membrane. It is widely accepted that the anodic reaction requires the largest overpotential and thus the anode electrocatalyst has been the focus of much work [1][2][3][4][5][6][7]. Typically the anode electrocatalysts for acidic conditions are IrO 2 and RuO 2 based materials.…”

Section: Introductionmentioning

confidence: 99%

Electrocatalytic activity of IrO2–RuO2 supported on Sb-doped SnO2 nanoparticles

Marshall

Haverkamp

2010

Electrochimica Acta

180

129

View full text Add to dashboard Cite

Electrocatalytic IrO 2 -RuO 2 supported on Sb-doped SnO 2 (ATO) nanoparticles is very active towards the oxygen evolution reaction. The IrO 2 -RuO 2 material is XRD amorphous and exists as clusters on the surface of the ATO.Systematic changes to the surface chemical composition of the ATO as a function of the IrO 2 :RuO 2 ratio suggests an interaction between the IrO 2 -RuO 2 and ATO. Cyclic voltammetry indicates that the electrochemically active surface area of IrO 2 -RuO 2 clusters is maximised when the composition is 75 mol% IrO 2 -25 mol% RuO 2 . Decreasing the loading of IrO 2 -RuO 2 on ATO reduces the electrochemically active surface area, although there is evidence to support a decrease in the clusters size with decreased loading. Tafel slope analysis shows that if the clusters are too small, the kinetics of the oxygen evolution reaction are reduced. Overall, clusters of IrO 2 -RuO 2 on ATO have similar or better performance for the oxygen evolution reaction than many previously reported materials, despite the low quantity of noble metals used in the electrocatalysts. This suggests that these oxides may be of economic

show abstract

A structural investigation of stabilized oxygen evolution catalysts

Cited by 133 publications

References 16 publications

Hydrogen production by alkaline water electrolysis

Hydrogen production by alkaline water electrolysis

Voltammetric Characterization Methods for the PEM Evaluation of Catalysts

Electrocatalytic activity of IrO2–RuO2 supported on Sb-doped SnO2 nanoparticles

Contact Info

Product

Resources

About