Study of bipolar nickel-cadmium batteries as pulsed load filters. Final report, January-November 1985

Technical Report · Mon Jun 01 04:00:00 EDT 1987

OSTI ID:6148669

Chedister, R W; Ulmer, J M

Bipolar nickel-cadmium batteries were designed, built, and tested for use as capacitive filter elements for possible pulsed-power applications. Electrodes were made by electrochemically impregnating sintered sides of nickel cell walls. Four-cell batteries were constructed by compressing together the electrodes separated by Teflon seals. A computer controlled test circuit charged and discharged the test batteries at frequencies of 1 to 50 Hertz and at depths-of-discharge of less than one percent. A special test battery was constructed with a removeable cadmium electrode for scanning electron microscope study. Battery energy density, effective capacitance, and efficiency were investigated as a function of current load or depth-of-discharge, cycle-rate, and end-of-discharge voltage. Energy densities of nearly 75 joules per pound were demonstrated. Current loads of up to a 100 C-rate were demonstrated, and an average capacitance of 6 farads was achieved. Cadmium-electrode morphology was photographed and studied as a function of the charge and discharge cycle life and no crystalline anomalies were discovered.

• Research Organization: Air Force Wright Aeronautical Labs., Wright-Patterson AFB, OH (USA)
• OSTI ID: 6148669
• Report Number(s): AD-A-182779/9/XAB; AFWAL-TR-87-2051
• Country of Publication: United States
• Language: English

Related Subjects

25 ENERGY STORAGE
250901* -- Energy Storage-- Batteries-- Design & Development
CAPACITANCE
CRYSTALS
DESIGN
EFFICIENCY
ELECTRIC BATTERIES
ELECTRIC FILTERS
ELECTRICAL PROPERTIES
ELECTROCHEMICAL CELLS
ELECTRODES
ENERGY DENSITY
ENERGY SYSTEMS
FILTERS
IMPREGNATION
METAL-METAL OXIDE BATTERIES
NICKEL-CADMIUM BATTERIES
PHYSICAL PROPERTIES
POWDERS
POWER SYSTEMS
PULSES