Investigation of recent progress in metal-based materials as catalysts toward electrochemical water splitting

Solanki, Reena; Patra, Indrajit; Ahmad, Nafis; Kumar, Naresh; Romero-Parra, Rosario Mireya; Zaidi, Muhaned; Kumar, T. Ch. Anil; Hussein, Hussein Ali; Sivaraman, R.; Majdi, Hasan Sh.; Alkadir, Ola Kamal A.; Yaghobi, Roya

doi:10.1016/j.jece.2022.108207

Cited by 27 publications

(6 citation statements)

References 124 publications

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“…However, their practical utility is impeded by poor conductivity and mass transfer capability. 199,200 Addressing these challenges necessitates heightened efforts. High-entropy variants are gaining traction for their distinctive electronic and synergistic effects.…”

Section: Alkaline Electrolytementioning

confidence: 99%

Recent Advances in Electrochemical Water Splitting Electrocatalysts: Categorization by Parameters and Catalyst Types

Perumal,

Pokhrel,

Muhammad

et al. 2024

ACS Materials Lett.

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Hydrogen energy, heralded as a novel, clean, and highly efficient energy source, stands at the forefront of initiatives aimed at decarbonizing and fostering a sustainable carbon-neutral economy. Recent strides in hydrogen production through water splitting have marked significant progress, leveraging its inherent benefits, such as zero carbon emissions, safety, and exceptional product purity. Despite these advancements, challenges persist in surmounting the substantial energy barrier and watersplitting costs. Many efficient electrocatalysts have been innovatively designed and reported to address these hurdles. However, the translation of these advances into industrial-scale applications faces multifaceted obstacles. Urgent demands for highperformance electrocatalysts meeting industrial standards underscore the imperative for a deeper comprehension of water-splitting systems. This review delves into the latest developments in water electrolysis, synthesizing experimental findings and promising strategies with different electrochemical parameters along with high entropy metals, doping engineering, interface construction, and defect engineering. Despite considerable strides in creating efficient watersplitting electrocatalysts and numerous recent investigations, numerous challenges persist, impeding the widespread industrial implementation of electrolytic water splitting. By providing a comprehensive overview, this review aims to furnish a knowledge-driven framework in fundamental science while fostering inspiration for technical engineering endeavors to craft efficient electrocatalysts tailored for water splitting.

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Section: Alkaline Electrolytementioning

confidence: 99%

Recent Advances in Electrochemical Water Splitting Electrocatalysts: Categorization by Parameters and Catalyst Types

Perumal,

Pokhrel,

Muhammad

et al. 2024

ACS Materials Lett.

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“…A standard threeelectrode system was used to assess the electrochemical performance in a N 2 -saturated 0.5 M H 2 SO 4 electrolyte. 37 The linear sweep voltammetry (LSV after IR calibration) shown in Figure 3a demonstrates that different TM doping with introduced abundant S-vacancies can greatly influence the electrochemical HER performance. Mn-MoS 2 -SV exhibits almost the same HER activity (an overpotential of 255 mV at 10 mA cm −2 ) compared to the MoS 2 -SV sample.…”

Section: Electrochemical Performancementioning

confidence: 99%

S-Vacancy Defect and Transition-Metal Atom Doping to Trigger Hydrogen Evolution of Two-Dimensional MoS₂

Liu

Guan

et al. 2023

Energy Fuels

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Two-dimensional (2D) MoS2 is commonly used as an anode catalyst for electrochemical water splitting. However, the limited active edge sites of 2D MoS2 have hindered its electrochemical performance in electrochemical water splitting. Here, experimental outcomes and density functional theory (DFT) calculations demonstrate that the catalytic performance of inert 2D MoS2 surfaces can be triggered by doping transition-metal atoms and introducing S-vacancies. In this work, the catalytic activity of different metal-doped (Cu, Mn, and Nb) 2D MoS2 with S-vacancies shows a great difference among tested MoS2-based samples. Characterizations verify the existence of dopant ions and S-vacancies. In particular, the Cu-doped electrocatalyst exhibits a low overpotential of 197 mV at 10 mA cm–2 in an acidic solution and superior stability of less than 10 mV increase in overpotential after 12 h of continuous hydrogen production process, proving that Cu doping and introduced S-vacancies can benefit the electrochemical performance. Moreover, DFT calculations reveal that S-vacancies and the further introduction of different metal ions can alter the adsorption behavior of H atoms by changing the d-band center of the in-plane Mo site neighboring the doped heteroatom atoms and S-vacancy sites, which explains well the superior performance of Cu-doped 2D MoS2.

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“…Ir-based catalysts can have low overpotentials, 400–500 mV less than that of the lead-based anode. , However, different challenges should be addressed to use Ir-based anodes in the zinc electrowinning process, i.e., the presence of high concentrations of zinc in the electrolyte . One of the important issues encountered with the Ir-based mixed oxides is their insufficient stability in harsh acidic media, high temperatures, and higher current densities, in comparison with the reference HClO 4 electrolytes. − …”

Section: Introductionmentioning

confidence: 99%

Iridium-Based Perovskites as Efficient Oxygen Evolution Reaction Catalysts in Acid Media

Fadaei,

Brown,

Houlachi

et al. 2024

ACS Appl. Eng. Mater.

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A series of perovskite-based catalysts were synthesized for oxygen evolution reactions (OERs), primarily intended for anodic reactions in the zinc electrowinning process. OER represents a significant portion of the energy consumption in the zinc electrowinning process, and our objective is to explore the possibility of using Ir-based perovskite catalysts to reduce this energy consumption. Ba–Ir perovskite was used as the starting point, and it was doped by other cations (M) to achieve BaM x Ir1–x O3 perovskites. Solid-state reaction (SSR) was employed to prepare the catalytic compounds. The crystalline structure of materials was investigated using X-ray diffraction (XRD). Potentiodynamic polarization and electrochemical galvanostatic tests were used to assess the performance of the synthesized materials with respect to the OER. Morphology and surface chemical composition of the optimized compound were evaluated, respectively, using scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS) analysis methods. The results reported here show that, compared to the benchmark IrO2 catalyst, the catalytic performance of Ir in a perovskite structure was significantly improved, while its Ir content was substantially lower. However, the activity of these compounds in sulfuric acid media is reduced over time. We found that the main deactivation mechanism of the catalysts is related to the formation of the Ba sulfate on the catalyst. The deactivation rate is highly dependent on the doped cation (M). BaNb0.2Ir0.8O3, with 42% less iridium content, was found to be the best catalyst among the synthesized formulations, satisfying the requirements of catalytic activity and longevity in highly acidic environments.

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Investigation of recent progress in metal-based materials as catalysts toward electrochemical water splitting

Cited by 27 publications

References 124 publications

Recent Advances in Electrochemical Water Splitting Electrocatalysts: Categorization by Parameters and Catalyst Types

Recent Advances in Electrochemical Water Splitting Electrocatalysts: Categorization by Parameters and Catalyst Types

S-Vacancy Defect and Transition-Metal Atom Doping to Trigger Hydrogen Evolution of Two-Dimensional MoS₂

Iridium-Based Perovskites as Efficient Oxygen Evolution Reaction Catalysts in Acid Media

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Investigation of recent progress in metal-based materials as catalysts toward electrochemical water splitting

Cited by 27 publications

References 124 publications

Recent Advances in Electrochemical Water Splitting Electrocatalysts: Categorization by Parameters and Catalyst Types

Recent Advances in Electrochemical Water Splitting Electrocatalysts: Categorization by Parameters and Catalyst Types

S-Vacancy Defect and Transition-Metal Atom Doping to Trigger Hydrogen Evolution of Two-Dimensional MoS2

Iridium-Based Perovskites as Efficient Oxygen Evolution Reaction Catalysts in Acid Media

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S-Vacancy Defect and Transition-Metal Atom Doping to Trigger Hydrogen Evolution of Two-Dimensional MoS₂