Degradation Behavior of LaNi(sub 4.8)Sn(sub 0.2)H(sub x) during Thermal Cycling
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Degradation Thermal Cycling alloys exposed to hydr↗
Engineering topics
Bowman, R. C.
Publications and source records attributed to Bowman, R. C..
Further Studies of the Isotherms of LaNi5-xSnx-H
Complete hydrogen isotherms have been measured using highly stoichiometric, activated LaNi5 over a wide temparature range, 373K to 228K.
Isotherms↗
Kinetics of Hydrogen Diffusion in LaNi(sub 5-x)Sn(sub x) Alloys
Solid-state diffusion of hydrogen in metal hydride (MH) alloys is recognized as the rate determining step in the discharge of MH alloys in alkaline Ni-MH rechargeable cells. In our pursuit of new ternary solutes in LaNi(sub 5) for extended cycle lifetimes, we have observed noticeable improvement in the cycle life with small substitutions of Sn and Ge for Ni. Furthermore, these substituents also facilitate enhanced charge transfer kinetics for hydriding-dehydriding process. In this paper, we report our studies on the kinetics of hydrogen diffusion in LaNi(sub 5-x) Sn(sub x) alloys by electrochemical pulse techniques, chronoamperometry and chronocoulometry.
electrochemical cycling↗