Hydrogen: Trends, production and characterization of the main process worldwide

Veras, Tatiane da Silva; Mozer, Thiago Simonato; Santos, Danielle da Costa Rubim Messeder dos; César, Aldara da Silva

doi:10.1016/j.ijhydene.2016.08.219

Cited by 584 publications

(200 citation statements)

References 126 publications

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Section: Introductionmentioning

confidence: 99%

“…Thriving climatic changes by virtue of global warming as well as a reduction in fossil fuels: the root of conventional non‐renewable energy systems have driven the society to the energy crisis . Our ceaseless consumption of energy has led to researchers′ exertion on the development of alternative clean energy systems . Renewable electrochemical energy devices on the grounds of oxygen reduction reaction (ORR) and the oxygen evolution reaction (OER) are regarded as a decisive, environmentally compliant, productive and economically feasible alternative .…”

Section: Introductionmentioning

confidence: 99%

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Metal Silicide Nanosphere Decorated Carbon‐Rich Polymer‐Derived Ceramics: Bifunctional Electrocatalysts towards Oxygen and their Application in Anion Exchange Membrane Fuel Cells

et al. 2019

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The current hindrance in the commercialization of electrochemical devices such as fuel cells and metal–air batteries is the high cost and poor stability of widely employed noble‐metal‐based electrocatalysts. In this report, a new intermetallic nickel/cobalt silicide‐decorated carbon‐rich silica‐based ceramic composites (Co/SiOC or Ni/SiOC) were successfully synthesized as alternative bifunctional electrocatalysts. The oxygen reduction reaction (ORR) and the oxygen evolution reaction (OER) kinetics of the prepared composite materials were evaluated by electrochemical characterization. Co/SiOC exhibited more positive ORR kinetics with the onset potential of 0.87 V vs. RHE compared to that of Ni/SiOC, which is slightly lower compared to Pt/C. Conversely, Ni/SiOC exhibits a 50 mV more positive OER onset potential compared to Co/SiOC with almost similar OER kinetics to RuO2. The bifunctional ability concluded that Ni/SiOC was a good bifunctional catalyst with an oxygen electrode potential 0.89 V. As Co/SiOC performs as a better ORR catalyst, it was utilized as a cathode catalyst for the construction of anion exchange membrane fuel cell and its fuel cell performance was evaluated. The Co/SiOC composites produce a peak power density of 54 mW/cm2, representing a satisfactory result when compared with Pt/C. The results reveal that the intermetallic nickel/cobalt silicide nanosphere decorated ceramic materials can have a promising future as efficient alternative electrocatalysts in electrochemical devices.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Metal Silicide Nanosphere Decorated Carbon‐Rich Polymer‐Derived Ceramics: Bifunctional Electrocatalysts towards Oxygen and their Application in Anion Exchange Membrane Fuel Cells

et al. 2019

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“…Therefore, developing new energy is of great significance. Among various renewable energies, Hydrogen has been known as one of the ideal energy sources in the future, due to its sustainability and cleanliness . Furthermore, water electrolysis is an important way to obtain hydrogen.…”

Section: Introductionmentioning

confidence: 99%

Two‐Step Hydrothermal Synthesis of CoSe/MoSe₂ as Hydrogen Evolution Electrocatalysts in Acid and Alkaline Electrolytes

et al. 2019

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Recently, composite electrocatalytic hydrogen evolution materials have received a lot of attention, especially the composite material of transition metal dichalcogenides. In this article, CoSe/MoSe2 was successfully synthesized by a simple two‐step hydrothermal method, then the nanostructure and chemical composition of the composite was characterized by X‐ray diffraction (XRD), X‐ray photoelectron spectroscopy (XPS), field emission scanning electron microscopy (FESEM) and high‐resolution transmission electron microscopy (HRTEM). Compared to pure MoSe2 and CoSe, CoSe/MoSe2 exhibits excellent catalytic. The current density of 10 mA cm−2 could be reached at low overpotentials of 192 and 115 mV in acidic and alkaline electrolytes, respectively. In addition, such composite has a small Tafel slope and low electron transport resistance, which indicates that CoSe/MoSe2 has a high hydrogen dissociation rate. Furthermore, it shows high cycling stability.

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“…Hydrogen is proposed as alternative to energy supply systems [1]. However, hydrogen is an odorless and colorless gas with a wide explosive range, between 4% and 75%, which suppose a safety risk if it is transported, saved or manipulated due to the possibility of leakages.…”

Section: Introductionmentioning

confidence: 99%

Improving Sensitivity of a Chemoresistive Hydrogen Sensor by Combining ZIF-8 and ZIF-67 Nanocrystals

Matatagui¹,

Sainz-Vidal²,

Gràcia³

et al. 2017

Proceedings of Eurosensors 2017, Paris, France, 3–6 September 2017

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Abstract:In the present work, nanostructures of zeolitic imidazolate frameworks (ZIF-8 and ZIF-67) were combined to obtain a novel chemoresistive sensor, improving the sensitivity of ZIF-67 and facilitating measurement of ZIF-8 by decreasing the resistivity. The sensor detected concentrations as low as 10 ppm of hydrogen increasing its resistivity about 4.5 times. The response of the sensor was compared with a similar chemoresistive sensor based exclusively on ZIF-67, and the sensitivity was around three times higher in the case of the sensor with ZIFs combination.

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Hydrogen: Trends, production and characterization of the main process worldwide

Cited by 584 publications

References 126 publications

Metal Silicide Nanosphere Decorated Carbon‐Rich Polymer‐Derived Ceramics: Bifunctional Electrocatalysts towards Oxygen and their Application in Anion Exchange Membrane Fuel Cells

Metal Silicide Nanosphere Decorated Carbon‐Rich Polymer‐Derived Ceramics: Bifunctional Electrocatalysts towards Oxygen and their Application in Anion Exchange Membrane Fuel Cells

Two‐Step Hydrothermal Synthesis of CoSe/MoSe₂ as Hydrogen Evolution Electrocatalysts in Acid and Alkaline Electrolytes

Improving Sensitivity of a Chemoresistive Hydrogen Sensor by Combining ZIF-8 and ZIF-67 Nanocrystals

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Hydrogen: Trends, production and characterization of the main process worldwide

Cited by 584 publications

References 126 publications

Metal Silicide Nanosphere Decorated Carbon‐Rich Polymer‐Derived Ceramics: Bifunctional Electrocatalysts towards Oxygen and their Application in Anion Exchange Membrane Fuel Cells

Metal Silicide Nanosphere Decorated Carbon‐Rich Polymer‐Derived Ceramics: Bifunctional Electrocatalysts towards Oxygen and their Application in Anion Exchange Membrane Fuel Cells

Two‐Step Hydrothermal Synthesis of CoSe/MoSe2 as Hydrogen Evolution Electrocatalysts in Acid and Alkaline Electrolytes

Improving Sensitivity of a Chemoresistive Hydrogen Sensor by Combining ZIF-8 and ZIF-67 Nanocrystals

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Two‐Step Hydrothermal Synthesis of CoSe/MoSe₂ as Hydrogen Evolution Electrocatalysts in Acid and Alkaline Electrolytes