Thermo-selenized stainless steel as an efficient oxygen evolution electrode for water splitting and CO2 electrolysis in real water matrices

Han, Man Ho; Ko, Young‐Jin; Lee, Seung Yeon; Lim, Chulwan; Lee, Woong Hee; Pin, Min Wook; Koh, Jai Hyun; Kim, Jihyun; Kim, Woong; Min, Byoung Koun; Oh, Hyung‐Suk

doi:10.1016/j.jpowsour.2021.230953

Cited by 13 publications

(10 citation statements)

References 55 publications

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“…3e). 26,27 The O 1s level of all four samples shows the presence of hydroxide species around at approximately 530–531 eV, while the other shoulder peak of adsorbed H 2 O (523–533 eV) is relatively large in alkaline-activated NiFe-F, and the lattice oxygen peak (529 eV) is observable in NiFe-F after neutral and acidic OER (Fig. 3f).…”

Section: Resultsmentioning

confidence: 91%

Unveiling the anode reaction environment in a CO₂ electrolyzer to provide a guideline for anode development

Song,

Ka,

Lim

et al. 2023

J. Mater. Chem. A

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Section: Resultsmentioning

confidence: 91%

Unveiling the anode reaction environment in a CO₂ electrolyzer to provide a guideline for anode development

Song,

Ka,

Lim

et al. 2023

J. Mater. Chem. A

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“…Besides, the preponderance of theoretical simulations on the electronic structure and charge density differences in the Schottky junction (DFT, molecular dynamics, Monte Carlo, etc. ) − can only forecast the overall direction of the electrochemical performance. However, it is still challenging to comprehend at the atomic, molecular, and electronic levels how heterostructure’s interfacial electron transfer and their intrinsic interaction with Schottky heterojunctions work for electrocatalysis.…”

Section: Discussionmentioning

confidence: 99%

Review of Mott–Schottky-Based Nanoscale Catalysts for Electrochemical Water Splitting

Krishnamachari,

Lenus,

Pradeeswari

et al. 2023

ACS Appl. Nano Mater.

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Fundamental structural modification of nanomaterials perpetually presents a phenomenal technique to control the electronic structure of active sites, thereby improving the electrocatalytic activities. Nevertheless, appropriate surface reconstruction is necessary to overcome the large electrochemical overpotential that remains unexplored. In such scenarios, a deep understanding of fundamental structural modification mechanisms, including the Janus structure, spillover effect, d-band center shift theory, and interfacial coupling, is essential. One such fundamental interface and valence engineering strategy includes the Mott–Schottky (M–S) effect. Recently, M–S heterostructure catalysts have piqued the interest of researchers due to their ability to enable mass transport, regulate the density of states, enable continuous rapid electron transfer via band bending, and create a synergistic effect at the metal–semiconductor interface. In recent years, there has been a rise in the number of publications related to the M–S effect on electrocatalysis. In this review, we comprehensively summarize the M–S mechanism and the structural advantages of the M–S heterointerface with various nanoscale featured transition metal nitrides, phosphides, carbides, oxides, hydroxides, chalcogenides, and noble metal composites. Finally, we briefly propose the obstacles, limitations, possibilities, and future directions for M–S heterostructure catalysts in water electrolysis.

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“…At the optimum temperature (500 °C), Han et al introduced Se atoms to the SS that promoted the diffusion of Ni and the formation of O vacancies on the surface while preventing the formation of passivation layers by Fe and Cr. 24 This process greatly enhanced the OER activity and stability of the SS (no significant fluctuations occurred during the stability test for 160 h). Surface corrosion modification includes both alkaline and acidic.…”

Section: ■ Introductionmentioning

confidence: 94%

“…For example, certain elements can be doped to the surface of SS by high-temperature calcination to enhance the active catalytic source. At the optimum temperature (500 °C), Han et al introduced Se atoms to the SS that promoted the diffusion of Ni and the formation of O vacancies on the surface while preventing the formation of passivation layers by Fe and Cr . This process greatly enhanced the OER activity and stability of the SS (no significant fluctuations occurred during the stability test for 160 h).…”

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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Thermo-selenized stainless steel as an efficient oxygen evolution electrode for water splitting and CO2 electrolysis in real water matrices

Cited by 13 publications

References 55 publications

Unveiling the anode reaction environment in a CO₂ electrolyzer to provide a guideline for anode development

Unveiling the anode reaction environment in a CO₂ electrolyzer to provide a guideline for anode development

Review of Mott–Schottky-Based Nanoscale Catalysts for Electrochemical Water Splitting

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

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Thermo-selenized stainless steel as an efficient oxygen evolution electrode for water splitting and CO2 electrolysis in real water matrices

Cited by 13 publications

References 55 publications

Unveiling the anode reaction environment in a CO2 electrolyzer to provide a guideline for anode development

Unveiling the anode reaction environment in a CO2 electrolyzer to provide a guideline for anode development

Review of Mott–Schottky-Based Nanoscale Catalysts for Electrochemical Water Splitting

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

Contact Info

Product

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Unveiling the anode reaction environment in a CO₂ electrolyzer to provide a guideline for anode development

Unveiling the anode reaction environment in a CO₂ electrolyzer to provide a guideline for anode development