LaNi{sub 5{minus}x}M{sub x} metal hydride alloys for alkaline rechargeable cells

Conference · Sun Nov 30 23:00:00 EST 1997

OSTI ID:549368

Witham, C K; Hightower, A; Bowman, Jr, R C; Fultz, B ^[1]; Ratnakumar, B V ^[2]

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1. California Inst. of Tech., Pasadena, CA (United States)
2. Jet Propulsion Lab., Pasadena, CA (United States)

This work centers on making alloy modifications to LaNi{sub 5} by replacing Ni with various metal elements. The primary goal of the alloy modifications is to stabilize the alloy during electrochemical cycling in an alkaline medium. The reasons that some elements promote cyclic stability are explored, and the relative magnitude of their effect is Ge > Sn > Si > Ga > Al > In > Ni. Other properties are determined for each alloy, such as maximum capacity, charge transfer kinetics, hydrogen diffusion, charge overpotentials, and charge efficiency. Alloy microstructural information is measured by X-ray diffraction, and gas-phase.

• DOE Contract Number: FG03-94ER14493
• OSTI ID: 549368
• Report Number(s): CONF-970168--; ISBN 0-7803-3631-3
• Country of Publication: United States
• Language: English

Related Subjects

25 ENERGY STORAGE
36 MATERIALS SCIENCE
ALUMINIUM
ANODES
GALLIUM
GERMANIUM
INDIUM
LANTHANUM ALLOYS
MATERIAL SUBSTITUTION
NICKEL
NICKEL ALLOYS
NICKEL-HYDROGEN BATTERIES
SILICON
TIN