Tailoring the oxide surface composition of stainless steel for improved OER performance in alkaline water electrolysis

Zamanizadeh, H R; Sunde, Svein; Pollet, Bruno G.; Seland, Frode

doi:10.1016/j.electacta.2022.140561

Cited by 26 publications

(26 citation statements)

References 62 publications

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“…In a move to supplement the hydrogen energy demand, recently, alkaline water electrolysis has been regarded as one of the potential methods for effectively producing hydrogen fuel at an industrial scale . During electrolysis, the water splitting process includes two semicell reactions: cathodic HER and anodic oxygen evolution reaction (OER) reactions. , The OER is significant and known as the heart of electrochemical water splitting . Nevertheless, the OER is called the rate-determining step, because of sluggish kinetics and the fact that a theoretical potential of 1.23 V is necessary to perform the four-electron (4e – ) transfer process …”

Section: Introductionmentioning

confidence: 99%

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Electrochemical Performance Evaluation of Bimetallic Sulfide Nanocomposite with Fullerene (CeNdS/C₆₀) for Efficient Oxygen Evolution Reaction (OER)

et al. 2023

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In recent decades, developing cost-stable electrocatalysts for oxygen evolution reactions at low overpotential has still been challenging for chemical energy conversion devices. In the present work, we have reported the facile development of the CeNdS/C 60 nanocomposite via the solution method. The covered C 60 over CeNdS is confirmed by TEM and STEM, providing strong interfacial interaction between CeNdS and C 60 . In a medium consisting of 1.00 M KOH, CeNdS/C 60 electrode displayed a very small overpotential of 346 mV and a small Tafel slope of 68 mV dec −1 at a benchmark current density. Chronoamperometric and continuous CV sweeps confirmed the good stability of this catalyst at a scan rate of 5 mV s −1 (5000 cycles). The turnover frequency of CeNdS/C 60 was 1.7 s −1 , and the corresponding electrochemically active surface area was 3057.5 cm 2 . Brunauer−Emmett−Teller (BET) surface area results also confirmed the attachment of C 60 particles with CeNdS by developing a high surface area with porous channels that further facilitate electrolyte penetration and the charge transfer rate, thus improving the OER property of CeNdS/C 60 . All performed techniques showed that the presence of Nd and C 60 ions in the CeNdS/C 60 catalyst is responsible for growing the superb intrinsic OER catalytic activity. Furthermore, these findings have revealed an excellent potential for CeS-based electrocatalysts for more electrochemical energyconversion applications.

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Section: Introductionmentioning

confidence: 99%

“…10,11 The OER is significant and known as the heart of electrochemical water splitting. 12 Nevertheless, the OER is called the rate-determining step, because of sluggish kinetics and the fact that a theoretical potential of 1. 23 V is necessary to perform the four-electron (4e − ) transfer process.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Performance Evaluation of Bimetallic Sulfide Nanocomposite with Fullerene (CeNdS/C₆₀) for Efficient Oxygen Evolution Reaction (OER)

et al. 2023

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“…Therefore, many nonprecious metal-based electrocatalysts (mainly transition metals) have been extensively investigated, including transition metal sulfides, phosphides, carbides, nitrides, etc. − In addition, materials such as layered double hydroxides (LDHs) and metal–organic frameworks (MOFs) also have been widely studied because of their large specific surface area, high design flexibility, and simple synthesis methods. , With excellent electrocatalytic properties, NiFe-based composites are highly applicable among the reported transition metal-based electrocatalysts. − With low costs, superior corrosion resistance, and mechanical properties, stainless steel (SS) materials (mainly composed of transition metals such as Fe, Ni, Cr, and Mn) are widely used in various industrial scenarios . The presence of nickel and iron provides good intrinsic catalytic activity for SS, which has excellent potential in electrocatalysis. − …”

Section: Introductionmentioning

confidence: 99%

Dual Modification of Stainless Steel by Small Molecule Oxalic Acid for Oxygen Evolution Reaction

Zhang

Wang

et al. 2023

ACS Sustainable Chem. Eng.

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A electrocatalyst with low cost and high performance is the key to achieve the industrial application of hydrogen energy. In this work, inexpensive commercial stainless steel is modified by a simple hydrothermal method. For the first time, surface corrosion modification and active substance loading are realized simultaneously with smallmolecule oxalic acid. Compared with 304-type stainless steel mesh (SSM-304), the overpotential of the sample after two-step treatment (noted as OESSM) is largely decreased (125 mV), and exceptional stability (48 h) is achieved. In acidic hydrothermal corrosion, the metal on the surface of stainless steel is eroded into the solution. Then, the C 2 O 4 2− recomplexes with the dissolved metal ions, and the oxalate is grown on the surface. The excellent catalytic activity and stability come from the unique framework structure of the metal oxalate crystals. Oxalic acid is widely available and with double carboxyl group in C 2 O 4 2− . The electrons enriched in C�O can enhance the adsorption energy on the catalyst surface and induce the production of active catalytic sites *OOH. In addition, the oxalate crystal framework provides critical support for maintaining positive catalytic activity and stability. This work creates the possibility of realizing the largescale application of stainless steel-based electrocatalysts in actual production.

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“…Numerous studies have been conducted on stainless steel (SS) in concentrated alkaline solutions for the application of traditional alkaline water electrolysis, − but use of SS alone as the anode in AEMWE is rare . In this work, we delineate AEM studies of the effects of the anode CL from the influence of the AEM.…”

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confidence: 99%

Stainless Steel Felt as a Combined OER Electrocatalyst/Porous Transport Layer for Investigating Anion-Exchange Membranes in Water Electrolysis

et al. 2023

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Anion-exchange membrane water electrolysis (AEMWE) is a promising technology for low-cost, high-efficiency, green hydrogen production. The stability of the AEM is a critical issue but difficult to delineate in situ from degradation of the catalyst layer (CL). Moreover, the porous transport layer (PTL) can contribute electrocatalytically. Herein, we demonstrate that stainless steel (SS) felt, in the absence of an anode CL, is highly active toward the oxygen evolution reaction (OER) (1 A cm −2 at 1.74 V cell ) and serves as a combined OER electrocatalyst and PTL, thus simplifying the study of AEMs in water electrolyzers. We further show that Ni felt exhibits much lower OER activity than SS felt, which suggests that in situ studies of OER electrocatalysts and CL compositions should be performed with Ni felt, not SS felt, to reduce OER contributions from the PTL. Lastly, we found that the substrate for depositing the cathode CL, AEM, or PTL strongly influences the rate of H 2 crossover.

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Tailoring the oxide surface composition of stainless steel for improved OER performance in alkaline water electrolysis

Cited by 26 publications

References 62 publications

Electrochemical Performance Evaluation of Bimetallic Sulfide Nanocomposite with Fullerene (CeNdS/C₆₀) for Efficient Oxygen Evolution Reaction (OER)

Electrochemical Performance Evaluation of Bimetallic Sulfide Nanocomposite with Fullerene (CeNdS/C₆₀) for Efficient Oxygen Evolution Reaction (OER)

Dual Modification of Stainless Steel by Small Molecule Oxalic Acid for Oxygen Evolution Reaction

Stainless Steel Felt as a Combined OER Electrocatalyst/Porous Transport Layer for Investigating Anion-Exchange Membranes in Water Electrolysis

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Tailoring the oxide surface composition of stainless steel for improved OER performance in alkaline water electrolysis

Cited by 26 publications

References 62 publications

Electrochemical Performance Evaluation of Bimetallic Sulfide Nanocomposite with Fullerene (CeNdS/C60) for Efficient Oxygen Evolution Reaction (OER)

Electrochemical Performance Evaluation of Bimetallic Sulfide Nanocomposite with Fullerene (CeNdS/C60) for Efficient Oxygen Evolution Reaction (OER)

Dual Modification of Stainless Steel by Small Molecule Oxalic Acid for Oxygen Evolution Reaction

Stainless Steel Felt as a Combined OER Electrocatalyst/Porous Transport Layer for Investigating Anion-Exchange Membranes in Water Electrolysis

Contact Info

Product

Resources

About

Electrochemical Performance Evaluation of Bimetallic Sulfide Nanocomposite with Fullerene (CeNdS/C₆₀) for Efficient Oxygen Evolution Reaction (OER)

Electrochemical Performance Evaluation of Bimetallic Sulfide Nanocomposite with Fullerene (CeNdS/C₆₀) for Efficient Oxygen Evolution Reaction (OER)