A(sup 119)Sn Mossbauer Spectometry Study of Li-SnO Anode Materials for Li-Ion Cells
Anode materials of SnO were charged reversibly with Li to capacities greater than 600 mAh/g.
Mossbauer spectometry study li-ion cells electoche↗
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Performance of LaNi***sub4.7***Sn***sub0.3*** Metal Hydride Electrodes in Sealed Cells
Cycle life and kinetics studies were performed on sealed nickel metal hydride electrochemical cells with anodes of LaNi***4.7***Sn***sub0.3*** and of a standard misch metal alloy.
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Electrochemical Studies on LaNi(sub 5-x)Sn(sub x) Metal Hydride Alloys
Electrochemical studies were performed on LaNi(sub 5-x)Sn(sub x) with 0(less than or equal to)x(less than or equal to)0.5. We measured the effect of the Sn substituent on the kinetics of charge transfer and diffusion during hydrogen absorption and desorption, and the cyclic lifetimes of LaNi(sub 5-x)Sn(sub x) electrodes in 250 mAh laboratory test cells. We report beneficial effects of making small substitutions of Sn for Ni in LaNi(sub 5) on the performance of metal hydride alloy anode in terms of cyclic lifetime, capacity and kinetics. The optimal concentration of Sn in LaNi(sub 5-x)Sn(sub x) alloys for negative electrodes in alkaline rechargable secondary cells was found to lie in the range 0.25(less than or equal to)x(less than or equal to)0.3.
metal hydride alloys hydrogen absorption↗
Electrochemical Evaluation of La-Ni-Sn Metal Hydride Alloys
A detailed electrochemical evaluaiton of Sn-modified LaNi 5 was performed to evaluate its applicability as negative electrode in alkaline rechargeable cells.
Sn-modified↗
(abstract) Studies on AB(sub 5) Metal Hydride Alloys with Sn Additives
The use of metal hydrides as negative electrodes in alkaline rechargeable cells is becoming increasingly popular, due to several advantages offered by the metal hydrides over conventional anode materials (such as Zn, Cd) in terms of specific energy environmental cycle life and compatibility. Besides, the similarities in the cell voltage pressure characteristics, and charge control methods of the Ni-MH cells to the commonly used Ni-Cd point to a projected take over of 25% of the Ni-Cd market for consumer electronics by the Ni-MH cells in the next couple of years. Two classes of metal hydrides alloys based on rare earth metals (AB(sub 5)) and titanium (AB(sub 2)) are being currently developed at various laboratories. AB(sub 2) alloys exhibit higher specific energy than the AB(sub 5) alloys but the state of the art commercial Ni-MH cells are predominately manufactured using AB(sub 5) alloys.
earth metals↗