Development and evaluation of anode alloys for aluminum/air batteries: Final report
Experimental and theoretical studies are reported on the development of aluminum alloys for alkaline aluminumair batteries. This work begins by analyzing the thermodyanmics of aluminum in LiOH, NaOH, and KOH solutions as a function of concentration (0 to 7 molkg alkali) and temperature (25 to 100)degree)C). The thermodynamic data define the conditions under which precipitation of Al(OH)/sub 3/ may occur but, more importantly for this study, they yield equilibrium potentials for various charge transfer reactions, including aluminum dissolution, Al(OH)/sub 3/ and A100H formation, AlH/sub 3/ formation, oxygen reduction, and hydrogen evoltuion. These data are used in our mechanistic analyses of aluminum electrodissolution. The findings of this work form the basis of a working model for the activation of aluminum alloy fuels for alkaline aluminumair batteries, in which activation is attributed to the oxidative dissolution of a protective layer of metallic alloying elements (principally gallium) from the surface at a voltage of )approximately)1.5 V (HgHgO). This model is now being used to design and prepare new high energy density anodes for Alair batteris. 29 refs., 87 figs., 39 tabs
- Research Organization:
- SRI International, Menlo Park, CA (USA)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 5193441
- Report Number(s):
- DOE/NBM-8006908; ON: DE88006908
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ALUMINIUM-AIR BATTERIES
ANODES
MATERIALS TESTING
ALUMINIUM
ALUMINIUM ALLOYS
DISSOLUTION
ELECTROLYSIS
EXPERIMENTAL DATA
LITHIUM HYDROXIDES
POTASSIUM HYDROXIDES
SODIUM HYDROXIDES
TEMPERATURE DEPENDENCE
THERMODYNAMICS
ALKALI METAL COMPOUNDS
ALLOYS
DATA
ELECTRIC BATTERIES
ELECTROCHEMICAL CELLS
ELECTRODES
ELEMENTS
HYDROGEN COMPOUNDS
HYDROXIDES
INFORMATION
LITHIUM COMPOUNDS
LYSIS
METAL-GAS BATTERIES
METALS
NUMERICAL DATA
OXYGEN COMPOUNDS
POTASSIUM COMPOUNDS
SODIUM COMPOUNDS
TESTING
250903* - Energy Storage- Batteries- Materials
Components
& Auxiliaries
400400 - Electrochemistry