Rechargeable alkaline zinc/ferricyanide battery. Final report, 29 September 1978-28 September 1979. [35 mA/cm/sup 2/, 4. 5 kW/m/sup 2/]
First-year contract effort was directed primarily to assessing technical and economic feasibility of the alkaline zinc/ferricyanide rechargeable battery for utility load-leveling applications. This battery meets the requirements for this application with cell voltages of 1.94 V on charge and 1.78 V on discharge (35 mA/cm/sup 2/) at 40/sup 0/C, with peak power density of 4.5 kW/m/sup 2/. Mean energy efficiency is 84% at 760 and 86% at 1110 4-hour cycles in full-cell and redox half-cell cycling, respectively. An updated, upgraded economic analysis suggests a battery selling price of $32/kWh, installed price of $230/kW, and footprint of 8.7 kWh/ft/sup 2/ as realistic goals for a 20-MW, 100-MWh system. A major effort was successfully completed on design, construction, programing, and debugging of a microprocessor-controlled battery cycling system, which is the heart of the cell cycling test facility developed on this project. Other technical areas addressed include electrode substrate evaluation, solubilities and conductivities of zinc oxide and sodium ferro- and ferricyanide in sodium hydroxide electrolytes, mechanism of the slow chemical deligation of alkaline ferricyanide and its reversal, optimal compositions of zincate and iron redox electrolytes, effect of electrolyte flow rate and additions on quality of zinc electrodeposits, cell and electrode design and fabrication, and full and half-cell cyclic testing. Significant technical progress was made in concept configuration and improving performance of the alkaline zine/ferricyanide battery. 71 figures, 12 tables.
- Research Organization:
- Lockheed Missiles and Space Co., Palo Alto, CA (USA). Lockheed Palo Alto Research Lab.
- OSTI ID:
- 5282415
- Report Number(s):
- LMSC-D-678426
- Country of Publication:
- United States
- Language:
- English
Similar Records
Development of alkaline zinc/ferricyanide battery
Development and evaluation of sulfonated polysulfone membranes for the zinc/ferricyanide battery
Related Subjects
300501* -- Fuel Cells-- Design & Development
300503 -- Fuel Cells-- Materials
Components
& Auxiliaries
440300 -- Miscellaneous Instruments-- (-1989)
47 OTHER INSTRUMENTATION
ALKALI METAL COMPOUNDS
CHALCOGENIDES
COMPLEXES
COST
CURRENT DENSITY
DATA
DIRECT ENERGY CONVERTERS
EFFICIENCY
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTROCHEMICAL CELLS
ELECTRONIC CIRCUITS
ELEMENTS
ENERGY STORAGE
EXPERIMENTAL DATA
FEASIBILITY STUDIES
FERRICYANIDES
FERROCYANIDES
FUEL CELLS
HYDROGEN COMPOUNDS
HYDROXIDES
INFORMATION
IRON COMPLEXES
METALS
NUMERICAL DATA
OFF-PEAK ENERGY STORAGE
ON-LINE MEASUREMENT SYSTEMS
ON-LINE SYSTEMS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
REDOX FUEL CELLS
REGENERATIVE FUEL CELLS
SODIUM COMPOUNDS
SODIUM HYDROXIDES
SOLUBILITY
STORAGE
TRANSITION ELEMENT COMPLEXES
ZINC
ZINC COMPOUNDS
ZINC OXIDES