Mathematical modeling and experimental study of the performance of PEM water electrolysis cell with different loadings of platinum metals in electrocatalytic layers

Grigoriev, S.A.; Kalinnikov, A. A.

doi:10.1016/j.ijhydene.2016.09.058

Cited by 39 publications

(8 citation statements)

References 25 publications

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“…IrO x is the most widely used anode catalyst for the OER because of its higher stability and corrosion resistance, although its electrochemical activity is slightly lower than that of RuO 2 . Fine powders of IrO 2 can be synthesized through a variety of approaches, including the Adams fusion method, colloid protocol, sulfite complex route to films, magnetron sputtering, reduction, electrode deposition, and thermal decomposition .…”

Section: Progress In Catalysts For the Oermentioning

confidence: 99%

Iridium‐Based Catalysts for Solid Polymer Electrolyte Electrocatalytic Water Splitting

et al. 2019

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Chemical energy conversion/storage through water splitting for hydrogen production has been recognized as the ideal solution to the transient nature of renewable energy sources. Solid polymer electrolyte (SPE) water electrolysis is one of the most practical ways to produce pure H2. Electrocatalysts are key materials in the SPE water electrolysis. At the anode side, electrode materials catalyzing the oxygen evolution reaction (OER) require specific properties. Among the reported materials, only iridium presents high activity and is more stable. In this Minireview, an application overview of single iridium metal and its oxide catalysts—binary, ternary, and multicomponent catalysts of iridium oxides and supported composite catalysts—for the OER in SPE water electrolysis is presented. Two main strategies to improve the activity of an electrocatalyst system, namely, increasing the number of active sites and the intrinsic activity of each active site, are reviewed with detailed examples. The challenges and perspectives in this field are also discussed.

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Section: Progress In Catalysts For the Oermentioning

confidence: 99%

Iridium‐Based Catalysts for Solid Polymer Electrolyte Electrocatalytic Water Splitting

et al. 2019

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“…). − Proton exchange membrane electrolyzer cells (PEMECs) are widely used for water electrolysis. The PEMEC exhibits high current density, high purity of hydrogen production, safer electrolyte circulation, and the ability to withstand higher differential pressures between the anode and cathode sides . Furthermore, it also offers advantages such as the use of noncorrosive electrolytes, the potential for integration with fuel cells in a hybrid system, the absence of environmental pollution, ease of maintenance, and high safety .…”

Section: Introductionmentioning

confidence: 99%

Effect of Flow Channel Shape and Operating Temperature on the Performance of a Proton Exchange Membrane Electrolyzer Cell

2023

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Proton exchange membrane electrolyzer cells (PEMECs) are considered to be an environmentally friendly system for producing high-purity hydrogen through water electrolysis. However, they require optimal configurations and operating conditions for energy and costeffective practical applications. In this study, four different types of flow paths inside a PEMEC were proposed, namely, parallel, single-channel, four-channel, and parallel grid, and the effect of the flow path shape inside the PEMEC on hydrogen evolution reaction was examined. In addition, the optimal operating temperature was determined via electrochemical experiments. The experimental results reveal that the parallel grid flow field yielded the highest current density of 118.04 mA/cm 2 and hydrogen production at a volume flow rate of 6.6 mL/min owing to a relatively higher electrochemical surface area of 1.11657 cm 2 at the optimum operating temperature of 40 °C compared with other flow fields. Computational fluid dynamics analysis results confirmed that at 40 °C the parallel grid flow field has an advantageous path shape for electrolyte distribution inside the PEMEC, and consequently, the appropriate flow rate facilitates the transport of reactants and products. The findings of this study can be used as a reference for PEMEC research in terms of the selection of a suitable flow field geometry and temperature for PEMECs operating under different conditions.

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“…Ir oxides are widely used for PEM electrolyzer anodes . In terms of high performance and long stack operation, optimal Ir loading is currently ∼2–2.5 mg cm –2 , , which at present is not the major component of the PEM electrolyzer stack cost. , However, the noble metal catalysts’ contribution will become significant as other component costs decrease and as the demand for precious metals increases, with the expected rapid gigawatt scale-up of the PEM WE technology. , A significant reduction in the Ir loading from the current ∼2 mg cm –2 to only ∼0.05 mg cm –2 will then be required. , …”

Section: Introductionmentioning

confidence: 99%

Supported Ir-Based Oxygen Evolution Catalysts for Polymer Electrolyte Membrane Water Electrolysis: A Minireview

2022

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Renewable energy sources are considered to play a key role in the future energy mix, with hydrogen being an important energy carrier as a long-term energy storage option. Polymer electrolyte membrane (PEM) water electrolysis (WE) allows the relatively quick and convenient production of pure hydrogen from only water and electricity; thus it is considered as one of the most practical ways to consume renewable energy for green hydrogen production. The efficiency of water splitting largely depends on the intrinsic activity, selectivity, and stability of the oxygen evolution electrocatalysts, currently based on noble metals (e.g., Ir or Ru), for PEM technology. The utilization of various support materials has been proposed for decreasing the noble metal loading, reducing costs of the technology, and enhancing the catalytic activity and durability. This minireview addresses recent advances and research prospects in the area of Ir-based supported oxygen evolution catalysts. Besides addressing the intrinsic activity and durability of the supported catalysts, consideration is given to their applications in PEM WE cells. It concludes with mention of challenges and future perspectives.

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Mathematical modeling and experimental study of the performance of PEM water electrolysis cell with different loadings of platinum metals in electrocatalytic layers

Cited by 39 publications

References 25 publications

Iridium‐Based Catalysts for Solid Polymer Electrolyte Electrocatalytic Water Splitting

Iridium‐Based Catalysts for Solid Polymer Electrolyte Electrocatalytic Water Splitting

Effect of Flow Channel Shape and Operating Temperature on the Performance of a Proton Exchange Membrane Electrolyzer Cell

Supported Ir-Based Oxygen Evolution Catalysts for Polymer Electrolyte Membrane Water Electrolysis: A Minireview

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