High hydrogen production rate on RuS2@MoS2 hybrid nanocatalyst by PEM electrolysis

Sarno, Maria; Ponticorvo, Eleonora

doi:10.1016/j.ijhydene.2018.10.229

Cited by 50 publications

(17 citation statements)

References 53 publications

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“…We found PEM water electrolyzers with the FeP cathode to operate with Faradaic efficiencies between 84% and 100% (Figure ). At 300 mA, an efficiency of 67.7% was achieved based on the lower heating values of H 2 , while the energy consumption of 4.1 kWh Nm –3 of produced H 2 was achieved (for the calculation, see the SI), which compares well to reported values with MoS 2 cathode …”

Section: Resultssupporting

confidence: 80%

“…At 300 mA, an efficiency of 67.7% was achieved based on the lower heating values of H 2 , while the energy consumption of 4.1 kWh Nm −3 of produced H 2 was achieved (for the calculation, see the SI), which compares well to reported values with MoS 2 cathode. 44 The durability of Pt-free cathodes under operation in PEM water electrolysis for operating times of >100 h under constant polarization has so far only been demonstrated for MoS 2 , 35 FeS 2 , 38 and CoP. 43 However, the durability under varying power input remains to be addressed despite its significance to simulate compatibility with intermittent renewable energy sources.…”

Section: Resultsmentioning

confidence: 99%

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FeP Nanocatalyst with Preferential [010] Orientation Boosts the Hydrogen Evolution Reaction in Polymer-Electrolyte Membrane Electrolyzer

et al. 2020

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The development of nonprecious metal electrocatalysts for polymer-electrolyte membrane (PEM) water electrolysis is a milestone for the technology, which currently relies on rare and expensive platinum-group metals. Half-cell measurements have shown iron phosphide materials to be promising alternative hydrogen evolution electrocatalysts, but their realistic performance in flow-through devices remains unexplored. To fill this gap, we report herein the activity and durability of FeP nanocatalyst under application-relevant conditions. Our facile synthesis route proceeds via impregnation of an iron complex on conductive carbon support followed by phosphorization, giving rise to highly crystalline nanoparticles with predominantly exposed [010] facets, which accounts for the high electrocatalytic activity. The performance of FeP gas diffusion electrodes toward hydrogen evolution was examined under application-relevant conditions in a single cell PEM water electrolysis at 22 °C. The FeP cathode exhibited a current density of 0.2 A cm–2 at 2.06 V, corresponding to a difference of merely 0.07 W cm–2 in power input as compared to state-of-the-art Pt cathode, while outperforming other nonprecious cathodes operated at similar temperature. Quantitative product analysis of our PEM device excluded the presence of side reactions and provided strong experimental evidence that our cell operates with 84–100% Faradaic efficiencies and with 4.1 kWh Nm–3 energy consumption. The FeP cathodes exhibited stable performance of over 100 h at constant operation, while their suitability with the intermittency of renewable sources was demonstrated upon 36 h operation at variable power inputs. Overall, the performance as well as our preliminary cost analysis reveal the high potential of FeP for practical applications.

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Section: Resultssupporting

confidence: 80%

Section: Resultsmentioning

confidence: 99%

FeP Nanocatalyst with Preferential [010] Orientation Boosts the Hydrogen Evolution Reaction in Polymer-Electrolyte Membrane Electrolyzer

et al. 2020

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“…6 and S20 †) reaching the target current density of 1 A cm À2 at a cell potential of 1.95 V. Aer an initial activation phase, the cell potential remained constant during the 5 h electrolytic experiment. Further increasing the catalytic loading closer to those previously reported on metal suldes [41][42][43][44] (3-4 mg cm À2 ) results in improved potentials of 1.91 V and 1.93 V for 2 mg cm À2 and 4 mg cm À2 at the end of electrolysis, respectively. The lower performance of electrodes with 4 mg cm À2 might stem from an unoptimized mass transport within the thick electrode.…”

Section: Electrochemistrysupporting

confidence: 78%

Sustainable and rapid preparation of nanosized Fe/Ni-pentlandite particles by mechanochemistry

et al. 2020

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“…Since, RuS 2 nanomaterials have an excellent EC property due to its many valence conditions and extensive redox properties. 144 However, combination with other binary metal sulfides by MoS 2 −RuS 2 , 145,146 been reported for EC drug sensors and high-performance broadband photodetectors. Kubendhiran et al 149 developed a new EC sensor material (RuS 2 /AG) for determining the antipsychotic drug chlorpromazine hydrochloride (CPZ; Figure 13).…”

Section: + == = +mentioning

confidence: 99%

“…Since, RuS 2 nanomaterials have an excellent EC property due to its many valence conditions and extensive redox properties . However, combination with other binary metal sulfides by MoS 2 –RuS 2 , , WS 2 –RuS 2 , and Bi 2 S 3 –RuS 2 have been reported for EC drug sensors and high-performance broadband photodetectors.…”

Section: Introductionmentioning

confidence: 99%

Review of the Design of Ruthenium-Based Nanomaterials and Their Sensing Applications in Electrochemistry

Veerakumar

Hung

et al. 2022

J. Agric. Food Chem.

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In this review, ruthenium nanoparticles (Ru NPs)-based functional nanomaterials have attractive electrocatalytic characteristics and they offer considerable potential in a number of fields. Ru-based binary or multimetallic NPs are widely utilized for electrode modification because of their unique electrocatalytic properties, enhanced surface-area-to-volume ratio, and synergistic effect between two metals provides as an effective improved electrode sensor. This perspective review suggests the current research and development of Ru-based nanomaterials as a platform for electrochemical (EC) sensing of harmful substances, biomolecules, insecticides, pharmaceuticals, and environmental pollutants. The advantages and limitations of mono-, bi-, and multimetallic Rubased nanocomposites for EC sensors are discussed. Besides, the relevant EC properties and analyte sensing approaches are also presented. On the basis of these insights, we highlighted recent results for synthesizing techniques and EC environmental pollutant sensors from the perspectives of diverse supports, including graphene, carbon nanotubes, silica, semiconductors, metal sulfides, and polymers. Finally, this work overviews the modern improvements in the utilization of Ru-based nanocomposites on the basis for electroanalytical sensors as well as suggestions for the field's future development.

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High hydrogen production rate on RuS2@MoS2 hybrid nanocatalyst by PEM electrolysis

Cited by 50 publications

References 53 publications

FeP Nanocatalyst with Preferential [010] Orientation Boosts the Hydrogen Evolution Reaction in Polymer-Electrolyte Membrane Electrolyzer

FeP Nanocatalyst with Preferential [010] Orientation Boosts the Hydrogen Evolution Reaction in Polymer-Electrolyte Membrane Electrolyzer

Sustainable and rapid preparation of nanosized Fe/Ni-pentlandite particles by mechanochemistry

Review of the Design of Ruthenium-Based Nanomaterials and Their Sensing Applications in Electrochemistry

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