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to be 71.2 and 80.3kJ/(mol·K), respectively. The improvement in hydrogen sorption rate and and reduction in activation energy can be attributed to the addition of TiO2. Key words: Mg-based hydrogen storage materials; reactive mechanical alloying; hydrogen sorption properties; kinetics; activation energy ......
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hot deformation condition, and the influence of hydrogen on work-hardening rate (S*), strain energy density (U*), and deformation activation energy (Q) was analysed. The results show that the flow.... Fig.4 Influence of hydrogen on work-hardening rate (0.1 s-1): (a) θ=840 ℃; (b) θ=880 ℃ 3.3 Influence of hydrogen on strain energy density The influence of hydrogen on strain energy density......
of hydrogen is higher, the additional hydrogen atoms are in sites with higher energy and these sites in amorphous state are similar to these in crystalline states. Key words: Zr35Ni55V10 alloy; amorphous... of diffusivity and diffusion activation energy of hydrogen was presented[10-11]. However, the influence of the hydrogen concentration on hydrogen diffusion in amorphous alloys is still obscure......
of the alloys were calculated by Van’t Hoff equation. The hydrogen desorption activation energy of the alloy hydride was estimated using Arrhenius and Kissinger methods. The results indicate that a variation... energy caused by increasing Ni content and prolong milling time. Key words: hydrogen storage; mechanical milling; activation energy; kinetics 1 Introduction In recent decades, a great deal of efforts......
]. The possible reason is that the glassy state possesses a higher free energy and therefore also a larger driving force for oxidation. However, in many hydrogen storage alloys, their hydrogen storage capacity...[10-11]. From the free energy consideration, it is not easy to explain the large difference between the two states. On the other hand, a key difference between the two states in hydrogen storage......
dischargeability. Key words:storage energy technology; hydrogen storage alloy; discharge capacity; activity; high rate dischargeability; rare earths; [全文内容正在添加中] ...Study on High Rate Discharge Performance and Mechanism of AB5 Type Hydrogen Storage Alloys 于军1,郭靖洪2,杨柯2,刘国忠1,陈德敏2,张建海1 (1.Suppo Battery Co.,Ltd.,Shenyang 110015,China;2.Institute of Metal Research......
: hydrogen desorption kinetics; potentiostatic discharge; three-dimensional diffusion; activation energy; hydrogen storage alloys 1 Introduction Mg-based alloy is a kind of promising hydrogen storage.... Table 2 Relationship between activation energy of hydrogen desorption and exchange current densities of Mg0.9Ti0.1Ni1-xPdx (x=0, 0.05, 0.1, 0.15) electrode alloys 3.3 Linear Polarization Fig.6......
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