Proton-exchange membrane regenerative fuel cells

Swette, L.; LaConti, A.B.; McCatty, Steve

doi:10.1016/0378-7753(94)87013-6

Cited by 80 publications

(30 citation statements)

References 4 publications

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“…For unsupported bifunctional electrocatalysts, Pt-MO x (M = Ru, Ir, Na), bimetallic (e.g., Pt-Ir), and trimetallic (e.g., Pt 4.5 Ru 4 Ir 0.5 ) materials have been developed. [90][91][92][93] On the other hand, to enhance the electrochemical surface area and electronic properties of the anode, several supported bifunctional electrocatalysts have been proposed, with IrO 2 -supported Pt electrocatalysts, for example, demonstrating high electrocatalytic activity toward OER. 94 Significant advances in the development of novel OER electrocatalysts have been made, but considerable challenges still remain, particularly concerning catalysts' cost and durability.…”

Section: ) (24)mentioning

confidence: 99%

Hydrogen production by alkaline water electrolysis

Santos¹,

Sequeira²,

Figueiredo³

2013

Quím. Nova

354

226

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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.

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Section: ) (24)mentioning

confidence: 99%

Hydrogen production by alkaline water electrolysis

Santos¹,

Sequeira²,

Figueiredo³

2013

Quím. Nova

354

226

View full text Add to dashboard Cite

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“…The type of an electrochemical cell working both as a fuel cell and a water electrolyzer is called a unitized regenerative fuel cells (URFC) [13,38,67,70]. These devices produce hydrogen from water in the electrolysis mode, while electricity can be inversely produced in the fuel cell mode.…”

Section: Principles Of Polymer Electrolyte Membrane (Pem) Water Electmentioning

confidence: 99%

Advanced Construction Materials for High Temperature Steam PEM Electrolysers

Nikiforov¹,

Christensen²,

Petrushina³

et al. 2012

Electrolysis

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“…Ir (or Ir oxide) is a very good catalyst for the oxygen evolution reaction (OER) in acidic solution [19] and is therefore often added to the Pt catalyst of the cathode in unitised regenerative fuel cells [20][21][22][23][24][25][26][27][28][29][30]. Higher Ir content improves the OER whereas too high amounts of Ir have a negative effect on the ORR [26,27].…”

Section: Introductionmentioning

confidence: 99%

The impact of iridium on the stability of platinum on carbon thin-film model electrodes

Wesselmark¹,

Wickman²,

Lagergren³

et al. 2013

Electrochimica Acta

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a b s t r a c tIncreasing the stability and lifetime of the electrodes is one of the most important factors in order to realise a large scale use of polymer electrolyte membrane fuel cells (PEMFC). By using well-defined thin-film model electrodes, the stability of Pt and Pt on Ir were examined as cathode catalysts in a single cell PEMFC setup. The electrodes were fabricated by evaporating thin layers of Pt and Pt on Ir onto the microporous layer of a gas diffusion layer. The amount of Pt deposited was equivalent to 3 nm (about 6.3 g cm −2 ) and the amount of Ir was varied between 1.5 nm and 20 nm (between 3.4 g cm −2 and 45.3 g cm −2 ). All samples with Ir showed an increased stability over samples with sole Pt during cyclic corrosion test between 0.6 V and 1.2 V vs. the reversible hydrogen electrode. For thin layers of Ir, the initial activity for the oxygen reduction reaction was equal to or superior to that of sole Pt but for thicker Ir films it was somewhat lower. Hydrogen underpotential deposition and CO stripping were used to estimate the electrochemical surface area during the experiments and physical characterisation using scanning electron microscopy and X-ray photoelectron spectroscopy were used to determine the structure of the samples. The results suggest that Ir can stabilise Pt in the cathode electrode.

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Proton-exchange membrane regenerative fuel cells

Cited by 80 publications

References 4 publications

Hydrogen production by alkaline water electrolysis

Hydrogen production by alkaline water electrolysis

Advanced Construction Materials for High Temperature Steam PEM Electrolysers

The impact of iridium on the stability of platinum on carbon thin-film model electrodes

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