Mechanical activation of TiFe for hydrogen storage by cold rolling under inert atmosphere

dc.creatorVEGA, L.E.R.
dc.creatorLEIVA, D.R.
dc.creatorLEAL NETO, R.M.
dc.creatorSILVA, W.B.
dc.creatorSILVA, R.A.
dc.creatorISHIKAWA, T.T.
dc.creatorKIMINAMI, C.S.
dc.creatorBOTTA, W.J.
dc.date2018
dc.date2018-04-16T16:23:44Z
dc.date2018-04-16T16:23:44Z
dc.date.accessioned2023-09-28T14:07:17Z
dc.date.available2023-09-28T14:07:17Z
dc.identifier0360-3199
dc.identifierhttp://repositorio.ipen.br/handle/123456789/28843
dc.identifier5
dc.identifier43
dc.identifier10.1016/j.ijhydene.2017.12.054
dc.identifier69.816
dc.identifier88.00
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/8999090
dc.descriptionTiFe is a very interesting material for hydrogen storage in the solid state, due to its hydrogen capacity of 1.9 wt % and to the fact it can be absorb/desorb hydrogen at room temperature. However, the TiFe produced by casting does not absorb hydrogen, unless a procedure called activation is applied, which is based on a repetition of several thermal cycles. This study evaluates the effects of a mechanical activation route for the TiFe intermetallic compound, namely, cold rolling (CR) under inert atmosphere. Stoichiometric TiFe was prepared from elementary powders by arc melting. Ingot was grinded and then cold rolled for 20 and 40 passes under argon inside a glove box, with moisture and oxygen contents below 0.1 ppm. Cold rolled samples consisted of two parts: powder particles and thin cracked flakes. The results showed that mechanically activated samples by CR exhibited rapid absorption of hydrogen at room temperature, without using a thermal activation process. In general, the average storage capacity of hydrogen was 1.4 wt% H-2 for the first absorption, regardless of the number of passes for both flake and powder samples.
dc.descriptionFunda????o de Amparo ?? Pesquisa do Estado de S??o Paulo (FAPESP)
dc.descriptionFAPESP: 13/05987-8
dc.format2913-2918
dc.relationInternational Journal of Hydrogen Energy
dc.rightsopenAccess
dc.subjectrolling
dc.subjectinert atmosphere
dc.subjecthydrogen storage
dc.subjecttitanium
dc.subjectiron
dc.subjectx-ray diffraction
dc.titleMechanical activation of TiFe for hydrogen storage by cold rolling under inert atmosphere
dc.typeArtigo de peri??dico
dc.coverageI


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