The influence of iridium chemical oxidation state on the performance and durability of oxygen evolution catalysts in PEM electrolysis

Siracusano, Salvatore; Baglio, V.; Grigoriev, S.A.; Merlo, Luca; Фатеев, В. Н.; Aricò, A.S.

doi:10.1016/j.jpowsour.2017.09.020

Cited by 134 publications

(73 citation statements)

References 56 publications

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“…Accordingly, it is important to get a better understanding of the reaction process and performance limiting phenomena in membrane-electrode assemblies which are the core part of a PEM electrolysis system [ 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 ]. In this regard, electrochemical impedance spectroscopy appears an excellent diagnostic tool for electrochemical processes and devices especially when there is no possibility of using an internal reference electrode to help in deconvoluting different phenomena [ 17 , 18 , 19 , 20 ].…”

Section: Introductionmentioning

confidence: 99%

“…Several groups have already used electrochemical impedance spectroscopy to interpret more in detail the observed electrochemical phenomena and to derive information useful in improving performance and durability [ 8 , 13 , 14 , 15 , 16 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 ]. However, the response of a PEM electrolysis system varies significantly with regard to the type and thickness of membrane used, the different anode electrocatalyst, the type of current collector and diffusion media etc.…”

Section: Introductionmentioning

confidence: 99%

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Electrochemical Impedance Spectroscopy as a Diagnostic Tool in Polymer Electrolyte Membrane Electrolysis

et al. 2018

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Membrane–electrode assemblies (MEAs) designed for a polymer electrolyte membrane (PEM) water electrolyser based on a short-side chain (SSC) perfluorosulfonic acid (PFSA) membrane, Aquivion®, and an advanced Ir-Ru oxide anode electro-catalyst, with various cathode and anode noble metal loadings, were investigated. Electrochemical impedance spectroscopy (EIS), in combination with performance and durability tests, provided useful information to identify rate-determining steps and to quantify the impact of the different phenomena on the electrolysis efficiency and stability characteristics as a function of the MEA properties. This technique appears to be a useful diagnostic tool to individuate different phenomena and to quantify their effect on the performance and degradation of PEM electrolysis cells.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Electrochemical Impedance Spectroscopy as a Diagnostic Tool in Polymer Electrolyte Membrane Electrolysis

et al. 2018

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“…as well as their characterization and application in low-temperature hydrogen energy systems. The different preparation methods that have been reported in these studies include boron hydride wet chemical reduction, impregnation sol-gel deposition, thermal decomposition of metal salts and electroplating [193].…”

Section: Noble Metal Catalystsmentioning

confidence: 99%

Recent Progresses in Electrocatalysts for Water Electrolysis

Khan

Zhao

Zou

et al. 2018

Electrochem. Energ. Rev.

360

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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“…Long-term operation at high current density up to thousands of hours is particularly challenging with an Ir loading less than 1 mg cm À2 . Recent literature has seen a growing number of studies on longer-term electrolysis operation ranging from hundreds to several thousand hours [40][41][42][43][44][45][46][47] ( Table 1). In particular, the best reported stability was on a nanostructured thin film (NSTF) cell, which achieved 5000 hours with a constant current load of 2 A cm À2 and 0.25 mg cm À2 Ir loading [45].…”

Section: Nanostructures In Energy Generation Transmission and Storagementioning

confidence: 99%

Proton Exchange Membrane Water Electrolysis as a Promising Technology for Hydrogen Production and Energy Storage

Marić¹,

Yu²

2019

Nanostructures in Energy Generation, Transmission and Storage

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Proton exchange membrane (PEM) electrolysis is industrially important as a green source of high-purity hydrogen, for chemical applications as well as energy storage. Energy capture as hydrogen via water electrolysis has been gaining tremendous interest in Europe and other parts of the world because of the higher renewable penetration on their energy grid. Hydrogen is an appealing storage medium for excess renewable energy because once stored, it can be used in a variety of applications including power generation in periods of increased demand, supplementation of the natural gas grid for increased efficiency, vehicle fueling, or use as a high-value chemical feedstock for green generation of fertilizer and other chemicals. Today, most of the cost and energy use in PEM electrolyzer manufacturing is contributed by the cell stack manufacturing processes. Current state-of-the-art electrolysis technology involves two options: liquid electrolyte and ion exchange membranes. Membrane-based systems overcome many of the disadvantages of alkaline liquid systems, because the carrier fluid is deionized water, and the membrane-based cell design enables differential pressure operation.

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The influence of iridium chemical oxidation state on the performance and durability of oxygen evolution catalysts in PEM electrolysis

Cited by 134 publications

References 56 publications

Electrochemical Impedance Spectroscopy as a Diagnostic Tool in Polymer Electrolyte Membrane Electrolysis

Electrochemical Impedance Spectroscopy as a Diagnostic Tool in Polymer Electrolyte Membrane Electrolysis

Recent Progresses in Electrocatalysts for Water Electrolysis

Proton Exchange Membrane Water Electrolysis as a Promising Technology for Hydrogen Production and Energy Storage

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