Search results for "metal hydride"

showing 3 items of 3 documents

Description of hysteresis of Nickel Metal Hydride Battery

2012

A Dynamic Preisach Model for the description of the hysteresis in Nickel Metal Hydride Battery is presented. Both the hysteresis and the dynamical features of charging and discharging cycles are described. The identification of the model is obtained by using a neural network technique developed for magnetic systems. The model is validated by some experimental tests on commercial batteries.

Condensed Matter::Materials ScienceHysteresisNickelNickel–metal hydride batteryMaterials scienceENERGY BATTERYSettore ING-IND/11 - Fisica Tecnica AmbientaleArtificial neural networkchemistryMetallurgyMechanical engineeringchemistry.chemical_elementSettore ING-IND/32 - Convertitori Macchine E Azionamenti Elettrici
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Structural and hydrogenation study on the ball milled TiH2–Mg–Ni

2015

International audience; With the aim of further understanding for TieNieMg alloys and their hydrogenation behavior, powders of TiH2, Mg and Ni with the molar ratio of 3:1:2 have been mechanically milled for 10 h, 20 h, 30 h, 40 h according to the stoichiometry (TiH2)1.5Mg0.5Ni. Microstructures of the milled sample were analyzed and their hydrogenation properties as negative electrodes for Ni-MH batteries were studied. Phase change with milling time revealed the fast formation of the Ti-Mg-H FCC phase. The alloying priority among Ti, Mg and Ni was demonstrated by comparing phase compositions in different milling time. Hydrogen capacities evaluated by both solidegas reaction and electrochemic…

[SPI.ACOU]Engineering Sciences [physics]/Acoustics [physics.class-ph]Materials scienceHydrogenRenewable Energy Sustainability and the EnvironmentMetallurgyEnergy Engineering and Power Technologychemistry.chemical_elementHydrogen storageCondensed Matter PhysicsMicrostructureElectrochemistry[SPI.MAT]Engineering Sciences [physics]/MaterialsHydrogen storageFuel TechnologyChemical engineeringchemistryNi-MH Ti–MgElectrodeMetal hydrideTitrationMechanical alloying[SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/MicroelectronicsStoichiometrySolid solutionInternational Journal of Hydrogen Energy
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Combinatorial Identification of Hydrides in a Ligated Ag40 Nanocluster with Non-compact Metal Core

2019

No formation of bulk silver hydride has been reported. Until very recently, only few silver nanoclusters containing hydrides have been successfully prepared. However, due to the lack of effective techniques and also poor stability of hydride-containing Ag nanoclusters, the identification of hydrides’ location within Ag nanoclusters is challenging and not yet achieved although some successes have been reported on clusters of several Ag atoms. In this work, we report a detailed structural and spectroscopic characterization of the [Ag40(DMBT)24(PPh3)8H12]2+ (Ag40H12) cluster (DMBT=2,4-dimethylbenzenethiol). The metal framework consists of three-concentric shells of Ag8@Ag24@Ag8 which can be de…

hopeahydriditnanoklusteritsilvermetal hydridemetal nanoclustermetallitmetallihydriditcoinage metal
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