Ni–Mo–B alloys as cathode material for alkaline water electrolysis

Rauscher, T.; Müller, Christian I.; Schmidt, Andreas; Kieback, Bernd; Röntzsch, Lars

doi:10.1016/j.ijhydene.2015.12.132

Cited by 42 publications

(23 citation statements)

References 52 publications

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“…Iron is a cost-efficient catalyst for the oxygen evolution reaction [41,42,45]. Molybdenum decreases the overvoltage for the evolution of hydrogen at the cathode [44,46,47].…”

Section: Cell Design and Cell Voltagementioning

confidence: 99%

Alkaline Water Electrolysis Powered by Renewable Energy: A Review

2020

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Alkaline water electrolysis is a key technology for large-scale hydrogen production powered by renewable energy. As conventional electrolyzers are designed for operation at fixed process conditions, the implementation of fluctuating and highly intermittent renewable energy is challenging. This contribution shows the recent state of system descriptions for alkaline water electrolysis and renewable energies, such as solar and wind power. Each component of a hydrogen energy system needs to be optimized to increase the operation time and system efficiency. Only in this way can hydrogen produced by electrolysis processes be competitive with the conventional path based on fossil energy sources. Conventional alkaline water electrolyzers show a limited part-load range due to an increased gas impurity at low power availability. As explosive mixtures of hydrogen and oxygen must be prevented, a safety shutdown is performed when reaching specific gas contamination. Furthermore, the cell voltage should be optimized to maintain a high efficiency. While photovoltaic panels can be directly coupled to alkaline water electrolyzers, wind turbines require suitable converters with additional losses. By combining alkaline water electrolysis with hydrogen storage tanks and fuel cells, power grid stabilization can be performed. As a consequence, the conventional spinning reserve can be reduced, which additionally lowers the carbon dioxide emissions.

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“…Iron is a cost-efficient catalyst for the oxygen evolution reaction [41,42,45]. Molybdenum decreases the overvoltage for the evolution of hydrogen at the cathode [44,46,47].…”

Section: Cell Design and Cell Voltagementioning

confidence: 99%

Alkaline Water Electrolysis Powered by Renewable Energy: A Review

2020

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“…Vacancies can regulate the active sites, electronic structure, and adsorption energies of catalysts [43]. Various vacancies such as O, S, P, and B have been reported to improve the performance of Mobased catalysts recently [21,39,40,44,45]. Vacancy defects from Mo-based catalysts, especially O ones, are easy to obtain.…”

Section: Vacancy Defectsmentioning

confidence: 99%

“…Clear cracks could be observed in Figure 5f, which indicated that a large number of cracks appear on the substrate of MoS 2 by plasma treatment [53]. In addition, EDS can also be combined with SEM to analyze the composition and distribution of the doping defects [18,21,68,69] when foreign atoms or ions are doped. Atomic force microscope (AFM) could be used to characterize the surface smoothness of the 2D materials.…”

Section: Microscopy Characterizationmentioning

confidence: 99%

Defect Engineering of Molybdenum-Based Materials for Electrocatalysis

et al. 2020

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Molybdenum-based electrocatalysts have been widely applied in electrochemical energy conversion reactions. The essential roles of defects, including doping, vacancies, grain boundaries, and dislocations in improving various electrocatalytic performances have been reported. This review describes the latest development of defect engineering in molybdenum-based materials for hydrogen evolution, oxygen reduction, oxygen evolution, and nitrogen reduction reactions. The types of defects, preparation methods, characterization techniques, and applications of molybdenum-based defect materials are elucidated. Finally, challenges and future research directions for these types of materials are also discussed.

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“…Single component is limited in the regulation of their intrinsic activity due to the inherent capacity for hydrogen adsorption and desorption. [ 36,201,202 ] The multiple interfacial heterostructures can induce synergistic effect to optimize the Δ G H* value and achieve a desirable HER activity. [ 36,98 ] Thus, rational design of multiple interfacial Mo x C‐based heterostructures has also become a promising strategy to tune the adsorption and desorption of hydrogen for highly effective HER performance.…”

Section: Electrocatalytic Performancesmentioning

confidence: 99%

Surface and Interface Engineering: Molybdenum Carbide–Based Nanomaterials for Electrochemical Energy Conversion

Huo

Sun

et al. 2019

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Molybdenum carbide (MoxC)‐based nanomaterials have shown competitive performances for energy conversion applications based on their unique physicochemical properties. A large surface area and proper surface atomic configuration are essential to explore potentiality of MoxC in electrochemical applications. Although considerable efforts are made on the development of advanced MoxC‐based catalysts for energy conversion with high efficiency and stability, some urgent issues, such as low electronic conductivity, low catalytic efficiency, and structural instability, have to be resolved in accordance with their application environments. Surface and interface engineering have shown bright prospects to construct highly efficient MoxC‐based electrocatalysts for energy conversion including the hydrogen evolution reaction, oxygen evolution reaction, nitrogen reduction reaction, and carbon dioxide reduction reaction. In this Review, the recent progresses in terms of surface and interface engineering of MoxC‐based electrocatalytic materials are summarized, including the increased number of active sites by decreasing the particle size or introducing porous or hierarchical structures and surface modification by introducing heteroatom(s), defects, carbon materials, and others electronic conductive species. Finally, the challenges and prospects for energy conversion on MoxC‐based nanomaterials are discussed in terms of key performance parameters for the catalytic performance.

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Ni–Mo–B alloys as cathode material for alkaline water electrolysis

Cited by 42 publications

References 52 publications

Alkaline Water Electrolysis Powered by Renewable Energy: A Review

Alkaline Water Electrolysis Powered by Renewable Energy: A Review

Defect Engineering of Molybdenum-Based Materials for Electrocatalysis

Surface and Interface Engineering: Molybdenum Carbide–Based Nanomaterials for Electrochemical Energy Conversion

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