Tantalum carbide as a novel support material for anode electrocatalysts in polymer electrolyte membrane water electrolysers

Polonský, Jakub; Petrushina, Irina; Christensen, Erik R.; Bouzek, Karel; Prag, Carsten Brorson; Andersen, Jens Enevold Thaulov; Bjerrum, Niels

doi:10.1016/j.ijhydene.2011.11.035

Cited by 90 publications

(74 citation statements)

References 26 publications

(32 reference statements)

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“…Sufficient electron conductivity sounds completely logical as the material is supposed to transfer electrical charge to or from the electrocatalyst deposited on its surface. Therefore it is surprising that Polonský et al [17] report the possibility of overcoming the lack of conductivity of the support by ensuring a sufficient load of electrocatalyst forming a continuous, electronically conductive phase on the support surface. Polonský investigated the potential of various ceramic supports (TaC, Si 3 N 4 , WB, Mo 2 B 5 ) for application as an anodic electrocatalyst support in PEM water electrolysis utilising a polymer electrolyte with phosphoric acid imbibed as the proton-conducting phase.…”

Section: Introductionmentioning

confidence: 99%

“…In this work TiO 2 was selected as the catalyst support because it represents a stable [20] and inexpensive material, readily available in powder form with various properties. Three commercial TiO 2 powders with different surface areas were modified by IrO 2 using a modified Adams fusion method [17,18,21]. The weight ratio of IrO 2 /TiO 2 was kept constant for all the prepared catalysts.…”

Section: Introductionmentioning

confidence: 99%

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Non-conductive TiO2 as the anode catalyst support for PEM water electrolysis

Mazúr

Polonský

Paidar

et al. 2012

International Journal of Hydrogen Energy

118

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Non-conductive TiO2 as the anode catalyst support for PEM water electrolysis

Mazúr

Polonský

Paidar

et al. 2012

International Journal of Hydrogen Energy

118

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“…However, Tafel slope values which were obtained in this research are different from the reported literature in low overpotential region. Since Tafel slopes indicate the electrocatalyst quality, lower value of Tafel slope represents faster kinetics of the reaction [24]. Moreover, agglomerates can be generally found that IrO 2 -coated titanium anodes derived from conventional thermal decomposition and has been reported in the literature [25].…”

Section: Polarization Behaviourmentioning

confidence: 99%

Oxygen evolution reaction of Ti/IrO2–SnO2 electrode: a study by cyclic voltammetry, Tafel lines, EIS and SEM

2016

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The electrochemical characteristics towards oxygen evolution reaction of thermally prepared Ti/IrO 2 -SnO 2 electrodes were examined. Two electrodes prepared with two different IrO 2 compositions were analysed in Na 2 SO 4 electrolyte. Cyclic voltammetry, steady state polarization curves, impedance spectroscopy and open circuit potential were performed to investigate the performance and stability of these electrocatalysts. It has found that the surface electrochemistry of Ti/IrO 2 -SnO 2 anodes are governed by the Ir(III)/Ir(IV) couple. The impedance spectroscopy investigation permitted to propose an equivalent circuit to describe the modifications occurred in different potentials during oxygen evolution reaction. The same equivalent circuit was found to describe both electrodes. Moreover, the double layer capacitance and microstructure analysis reflected that the inner surface makes a large contribution to the electrochemically active surface area of Ti/IrO 2 -SnO 2 anodes. It was found that the stability and the electrocatalytic activity mainly depend on changes in the IrO 2 composition of the electrode and its morphology during oxygen evolution reaction.

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“…To overcome this issue, transition metal carbides have attracted much attention as support materials and as electrocatalysts [208][209][210][211] and many different metal carbides such as TiC, SiC-Si and TaC have been studied as support materials for IrO 2 . For example, Karimi et al [208] conducted a comparative analysis of six different metal carbides as support materials, including TaC, NbC, TiC, WC, NbO and Sb 2 O 5 -SnO 2 , and numerous factors were evaluated for OER catalyst applications such as surface area, IrO 2 loading and conductivity.…”

Section: Non-noble Metal Catalystsmentioning

confidence: 99%

Recent Progresses in Electrocatalysts for Water Electrolysis

Khan

Zhao

Zou

et al. 2018

Electrochem. Energ. Rev.

335

178

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The study of hydrogen evolution reaction and oxygen evolution reaction electrocatalysts for water electrolysis is a developing field in which noble metal-based materials are commonly used. However, the associated high cost and low abundance of noble metals limit their practical application. Non-noble metal catalysts, aside from being inexpensive, highly abundant and environmental friendly, can possess high electrical conductivity, good structural tunability and comparable electrocatalytic performances to state-of-the-art noble metals, particularly in alkaline media, making them desirable candidates to reduce or replace noble metals as promising electrocatalysts for water electrolysis. This article will review and provide an overview of the fundamental knowledge related to water electrolysis with a focus on the development and progress of non-noble metal-based electrocatalysts in alkaline, polymer exchange membrane and solid oxide electrolysis. A critical analysis of the various catalysts currently available is also provided with discussions on current challenges and future perspectives. In addition, to facilitate future research and development, several possible research directions to overcome these challenges are provided in this article.

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Tantalum carbide as a novel support material for anode electrocatalysts in polymer electrolyte membrane water electrolysers

Cited by 90 publications

References 26 publications

Non-conductive TiO2 as the anode catalyst support for PEM water electrolysis

Non-conductive TiO2 as the anode catalyst support for PEM water electrolysis

Oxygen evolution reaction of Ti/IrO2–SnO2 electrode: a study by cyclic voltammetry, Tafel lines, EIS and SEM

Recent Progresses in Electrocatalysts for Water Electrolysis

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