Effects of hydriding-dehydriding cycling on P-C-T and electrochemical properties of LaCaNiAl alloys

Li, Z.P.; Suda, S.

doi:10.1016/0925-8388(95)01734-8

Cited by 4 publications

(3 citation statements)

References 6 publications

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“…CuInS 2 quantum dots dispersed in aqueous media through the aid of a multidentate ligand and Ru as co-catalyst presented high H 2 production rates (418 mmol h À1 , apparent quantum efficiency of 4.7 %) under pure visible light irradiation. [59] Tabata et al studied the photoactivity of CuGa 3 S 5 using different co-catalysts. [60] In quaternary sulfides, CuÀGa-In sulfides have been mostly studied.…”

Section: Copper Chalcogenidesmentioning

confidence: 99%

Photocatalysis for Hydrogen Production and CO₂ Reduction: The Case of Copper‐Catalysts

2018

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Problems derived from climate change dictate the reestablishment of our prospective in energy production. In this direction, converting solar energy through photocatalysis into suitable fuels such as hydrogen and carbon‐based fuels by water splitting and CO2 reduction, respectively, has been established as a promising approach. Currently, the main concern in this field is the development of cost‐effective and efficient photocatalysts. Among the different systems studied, Cu‐based photocatalysts are considered attractive candidates for both applications due to their relative low‐cost, the natural abundance of the constituents and their promising reactivity. In this review, the current progress in the field of Cu‐based photoactive materials for both H2 production and CO2 reduction will be discussed. Finally, an outlook on the challenges and future research directions is given.

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Section: Copper Chalcogenidesmentioning

confidence: 99%

Photocatalysis for Hydrogen Production and CO₂ Reduction: The Case of Copper‐Catalysts

2018

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“…Many studies have been carried out to reduce the cost of LaNi 5 alloys by partially or totally replacing lanthanum with calcium, the CaNi 5 alloy, whose lanthanum is totally replaced by calcium, has the same hexagonal structure of the CaCu 5 type in the P6/3m space group as the LaNi 5 original alloy. 22,23 In the last decade, a lot of research has been conducted to develop the hydrogen storage properties of the CaNi 5 alloy, including its capacity and stability by the partial substitution of the Ca by Zr 24 and Ni by Mg, 25 Mo, 26 Al, 27 Sn, Cu, Mn, Si, Cr, Zn, Fe and V. 28 The electrochemical capacity might be increased if the metal is partially substituted by bigger metal atoms, as this would generate a larger unit cell volume. 29 The substitution of Ca and Ni by Ce and Zn, respectively, modified the unit cell volume and therefore the thermodynamics of hydrogenation and the plateau pressure.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Electrochemical properties of the CaNi _{5−
x} Mn _x electrodes synthesized by mechanical alloying

et al. 2020

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In this article, we exhaustively examined the effects of Mn substitution for Ni on the structures and electrochemical characterization of the CaNi 5−x Mn x (x = 0.2, 0.3, 0.5, 1) alloys prepared by mechanical synthesis for 40 hours at ball to powder weight ratio of 8:1. The characterization of electrodes was examined by X-ray diffraction, scanning electron microscope and electrochemical tests. In this context, the structural properties for each alloy have two major phases Ni, Ca 2 Ni 7 ; Ni, CaNi 3 ; Ni, CaNi 5 ; Ni, CaNi 3 where x = 0.2, 0.3, 0.5 and 1 respectively. The powder micrograph shows the existence of agglomerates has average particle size between 22 and 35 μm. In addition, the quantification by energy dispersive spectroscopy has been indicated the chemical composition of the all produced alloys is near their nominal composition. All electrodes are activated during the first cycle, independent of the Mn substitution rate. The highest values of discharge capacity and reversibility are obtained for x = 0.3 (125 mAh g −1 , 0.17 V) and x = 0.5 (119 mAh g −1 , 0.19 V) despite their low cycle stability. The evolution of D H /a 2 ratio and the I 0 exchange current density for the different Mn substitution rates is in accordance with that of the evolution of discharge capacities. The better kinetic properties is observed for x = 0.5 during electrochemical cycling.

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Investigation of modification of hydrogenation and structure properties of multi-substituted LaNi5 alloys

Wan

Yan

et al. 2012

International Journal of Hydrogen Energy

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Effects of hydriding-dehydriding cycling on P-C-T and electrochemical properties of LaCaNiAl alloys

Cited by 4 publications

References 6 publications

Photocatalysis for Hydrogen Production and CO₂ Reduction: The Case of Copper‐Catalysts

Photocatalysis for Hydrogen Production and CO₂ Reduction: The Case of Copper‐Catalysts

Electrochemical properties of the CaNi _{5−
x} Mn _x electrodes synthesized by mechanical alloying

Investigation of modification of hydrogenation and structure properties of multi-substituted LaNi5 alloys

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Effects of hydriding-dehydriding cycling on P-C-T and electrochemical properties of LaCaNiAl alloys

Cited by 4 publications

References 6 publications

Photocatalysis for Hydrogen Production and CO2 Reduction: The Case of Copper‐Catalysts

Photocatalysis for Hydrogen Production and CO2 Reduction: The Case of Copper‐Catalysts

Electrochemical properties of the CaNi 5− x Mn x electrodes synthesized by mechanical alloying

Investigation of modification of hydrogenation and structure properties of multi-substituted LaNi5 alloys

Contact Info

Product

Resources

About

Photocatalysis for Hydrogen Production and CO₂ Reduction: The Case of Copper‐Catalysts

Photocatalysis for Hydrogen Production and CO₂ Reduction: The Case of Copper‐Catalysts

Electrochemical properties of the CaNi _{5−
x} Mn _x electrodes synthesized by mechanical alloying