| Hydrogen storage properties of Mg-doped Ti_(1.2)Fe alloys synthesized by mechanical alloying |
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| 引用本文： | 陈昀,陈长聘,Cesar Sequeira,陈立新,王启东. Hydrogen storage properties of Mg-doped Ti_(1.2)Fe alloys synthesized by mechanical alloying[J]. 中国有色金属学会会刊, 2003, 13(2) |
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| 作者姓名： | 陈昀 陈长聘 Cesar Sequeira 陈立新 王启东 |
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| 作者单位： | DepartmentofMaterialsScienceandEngineering，ZhejiangUniversity，DepartmentofMaterialsScienceandEngineering，ZhejiangUniversity，DepartmentofChemicalEngineering，InstitutoSuperiorTecnico，DepartmentofMaterialsScienceandEngineering，ZhejiangUniversity，DepartmentofMaterialsScienceandEngineering，ZhejiangUniversity Hangzhou310027，China.DepartmentofChemicalEngineering，InstitutoSuperiorTecnico，Lisboa1049001，Portugal，Hangzhou310027，China.，Lisboa1049001，Portugal，Hangzhou310027，China.，Hangzhou310027，China |
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| 基金项目： | Project (G2 0 0 0 0 2 64 0 6)supportedbytheNationalKeyFundamentalResearchandDevelopmentProgram，Project( 2 0 0 1AA5 15 0 2 1)supportedbytheAdvancedMaterialCommitteeofChina |
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| 摘 要： | 1 INTRODUCTIONHydrogenstoragematerials ,usedinhydrogensourcesystemsforfuelcellshavebeeninvestigatedduetotheirhighvolumetricdensity ,safety ,easyminiaturizationandconvenientoperation .Consider ingallkindsofhydrogenalloysasawhole ,AB typeTiFealloysareknowntobemuchmoresuitableforusingin portableormobilePEMFCbecauseofitshighreversiblehydrogenstoragecapacity ,whichismuchhigherthanthatofAB5 typealloys.Ontheotherhand ,theactivationpropertiesoftheTiFeal loysare poor .Forexample ,typically ,…
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Hydrogen storage properties of Mg-doped Ti1.2Fe alloys synthesized by mechanical alloying |
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| Cesar Sequeira. Hydrogen storage properties of Mg-doped Ti1.2Fe alloys synthesized by mechanical alloying[J]. Transactions of Nonferrous Metals Society of China, 2003, 13(2) |
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| Authors: | Cesar Sequeira |
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| Abstract: | Hydrogen storage properties and phase components of Mg-doped TiFe alloys, that were prepared by Ti, Fe and Mg metal powders using a mechanical alloying technique, were studied. XRD analyses show that the main phase of all the Mg-doped Ti1.2Fe alloys is the TiFe phase. Some TiFe2 phase and α-Ti phase exist as secondary phases and Mg is dispersed in the alloy matrix. 3% Mg-doped and 5% Mg-doped Ti1.2Fe alloy samples can be fully activated within three hydriding/dehydriding cycles at room temperature and the hydrogen storage capacities of the alloys can reach 222mL/g and 198mL/g, respectively. Both two samples exhibit only one plateau region in their P-C-T curves with a low hydrogen absorption/desorption pressure hysteresis. The effect and mechanism of Mg addition as well as overstoichiometric Ti on the activation properties and hydrogen storage capacities of the alloys was also discussed. |
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| Keywords: | TiFe alloy Mg hydrogen storage properties mechanical alloying |
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