Understanding water-splitting thermochemical cycles based on nickel and cobalt ferrites for hydrogen production

Goikoetxea, Naiara B.; Gómez-Mancebo, M. Belén; Fernández-Saavedra, Rocío; Borlaf, F.; García-Pérez, Fernando; Jiménez, José Antonio; Llorente, Irene; Rucandio, Isabel; Quejido, Alberto J.

doi:10.1016/j.ijhydene.2019.05.003

Cited by 29 publications

(12 citation statements)

References 27 publications

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“…The following reactions take place during this process (M= Ni, Co, etc.) [217]: According to the results of the thermodynamic evaluation carried out by Charvin et al [188], a non-stoichiometric wustite phase (Fe 1−y O) may form during the process. Stoichiometric wustite presents more Fe 2+ for hydrogen production, but non-stoichiometric wustite exhibited higher reaction rates, probably due to the higher defect densities, serving as magnetite nucleation sites.…”

Section: Ferrite Cyclementioning

confidence: 99%

“…It should be noted that the cell parameter of the reduced phase and MO is close to each other. Thus, the following reaction may happen [217]:…”

Section: Ferrite Cyclementioning

confidence: 99%

“…The most promising mixed oxide cycles for hydrogen production with high hydrogen yield and cyclability are nickel ferrite (NiFe 2 O 4 ) and cobalt ferrite (CoFe 2 O 4 ) [203,217,218].…”

Section: Ferrite Cyclementioning

confidence: 99%

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A Review on Recent Progress in the Integrated Green Hydrogen Production Processes

2022

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The thermochemical water-splitting method is a promising technology for efficiently converting renewable thermal energy sources into green hydrogen. This technique is primarily based on recirculating an active material, capable of experiencing multiple reduction-oxidation (redox) steps through an integrated cycle to convert water into separate streams of hydrogen and oxygen. The thermochemical cycles are divided into two main categories according to their operating temperatures, namely low-temperature cycles (<1100 °C) and high-temperature cycles (<1100 °C). The copper chlorine cycle offers relatively higher efficiency and lower costs for hydrogen production among the low-temperature processes. In contrast, the zinc oxide and ferrite cycles show great potential for developing large-scale high-temperature cycles. Although, several challenges, such as energy storage capacity, durability, cost-effectiveness, etc., should be addressed before scaling up these technologies into commercial plants for hydrogen production. This review critically examines various aspects of the most promising thermochemical water-splitting cycles, with a particular focus on their capabilities to produce green hydrogen with high performance, redox pairs stability, and the technology maturity and readiness for commercial use.

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Section: Ferrite Cyclementioning

confidence: 99%

“…It should be noted that the cell parameter of the reduced phase and MO is close to each other. Thus, the following reaction may happen [217]:…”

Section: Ferrite Cyclementioning

confidence: 99%

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A Review on Recent Progress in the Integrated Green Hydrogen Production Processes

2022

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“…In this method, a cycle composed of chemical reactions takes place, and at the end, all chemicals regenerate again except H 2 O. Various types of thermochemical cycles have been reported: tin oxide (SnO 2 /SnO), 20,21 cobalt oxide, 22,23 iron oxide (Fe 3 O 4 /FeO), 24,25 zinc oxide (ZnO/Zn), 26,27 germanium oxide (GeO 2 /GeO), 28 cerium-based oxides, [29][30][31] sulfur-iodine, 32,33 sodium manganese mixed ferrite, 34 and sodium-redox (Na-redox) cycles. [35][36][37] Among the abovementioned works, specic temperature and pressure conditions are required due to kinetic and thermodynamics reasons.…”

Section: Introductionmentioning

confidence: 99%

Analysis of sodium generation by sodium oxide decomposition on corrosion resistance materials: a new approach towards sodium redox water-splitting cycle

et al. 2021

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“…The water splitting into hydrogen and oxygen can occur thermally [15][16][17], by thermo chemical cycles [18,19], steam reforming [20], zinc acid [21][22][23], aluminium upon treatment with bases and by photocatalysis [24,25]. In the first case, only a small amount of water gas can be decomposed at high temperature (> 2200 °C) using solar concentrators.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of New Modified System: Polyaniline/1.5-Naphtalene Disulfonic Acid as Novel Photocatalyst in the H2 Production

Hamlaoui

Naar

Saib

et al. 2021

Preprint

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The semiconducting properties of the system Polyaniline / 1.5-naphtalene disulfonic acid are investigated for the first time to assess its photocatalytic performance for the hydrogen evolution under visible light irradiation. PANI is thermally stable up to ~ 300 °C, above which a weight loss of ~ 1.2% occurs. The X-ray diffraction pattern shows broad peaks with a particle size of ~ 7 nm, leading to an active surface area of ∼ 400 m2 g−1. A direct optical transition at 1.96 eV, is determined from the diffuse reflectance spectrum. The electrical conductivity of PANI-NDSA follows an exponential law with activation energy of 0.24 eV. The p-type conduction of PANI-NDSA is evidenced from the (capacitance-2 – potential) characteristic plot; a flat band potential (Efb) of 0.82 VSCE and a holes density (NA) of 8.43× 1024 m-3 are determined in neutral solution (Na2SO4 0.1 M). The electrochemical impedance spectroscopy, measured over an extended frequency domain (1 mHz - 1010 Hz), indicates the contribution of both the bulk and grain boundaries with a constant phase element (CPE). As application, PANI-NDSA is successfully tested for the hydrogen production upon visible light owing to the potential of its conduction band (-0.75 VSCE), less cathodic than that of H2O/H2 (~ -0.30 VSCE). H2 liberation rate of 3840 h-1 (g catalyst)-1 and a quantum efficiency of 0.34% under full light (29 mW cm-2) are obtained using Fe(CN)64- as reducing agent. The photoactivity is completely restored during the second cycle.

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Understanding water-splitting thermochemical cycles based on nickel and cobalt ferrites for hydrogen production

Cited by 29 publications

References 27 publications

A Review on Recent Progress in the Integrated Green Hydrogen Production Processes

A Review on Recent Progress in the Integrated Green Hydrogen Production Processes

Analysis of sodium generation by sodium oxide decomposition on corrosion resistance materials: a new approach towards sodium redox water-splitting cycle

Preparation and Characterization of New Modified System: Polyaniline/1.5-Naphtalene Disulfonic Acid as Novel Photocatalyst in the H2 Production

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