Affiliation:
1. INETI, Instituto Nacional de Engenharia e Tecnologia e Inovação
2. LNEG
3. Instituto Nacional de Engenharia e Tecnologia Industrial
4. Fuel Cells and Hydrogen Unit
Abstract
FeTi intermetallic powders are very promising media for reversible hydrogen storage.
However, difficult activation treatments including annealing at elevated temperatures in high
pressure H2 gas atmosphere are mandatory. In the present work nanostructured FeTi powders were
produced and activated in situ at room temperature using mechanical alloying/milling (MA/MM) of
pure metallic constituents, Fe and Ti, added with sodium borohydride. The resultant powders,
FeTiHx, already H2 pre-charged, absorbed a significant amount of H2 but require optimization for
reversible absorption/desorption. This system has one of the highest volumetric storage capacities
and can be produced at low cost. Several parameters of the as-milled powders were controlled. The
phase constitution of the reaction products was characterized by X-ray diffraction and scanning
electron microscopy and the absorption isotherms of the activated powders were determined.
Publisher
Trans Tech Publications, Ltd.
Subject
Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science
Cited by
4 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献