Progress in the development of lightweight nickel electrode for aerospace applications

Conference · Sun Mar 01 04:00:00 EST 1992

OSTI ID:5242885

Britton, D L

The NASA Lewis Research Center is currently developing nickel electrodes for nickel-hydrogen (Ni-H2) cells and batteries. These electrodes are lighter in weight and have higher specific energy than the heavy sintered state of the art nickel electrodes. In the present approach, lightweight materials or plaques are used as conductive supports for the nickel hydroxide active material. These plaques (fiber, felt, and nickel plated plastic) are fabricated into nickel electrodes by electrochemically impregnating them with active material. Initial performance tests include capacity measurements at five discharge levels, C/2, 1.0C, 1.37C, 2.0C, and 2.74C. The electrodes that pass the initial tests are life cycle tested at 40 and 80 percent depths of discharge (DOD). Different formulations of nickel fiber materials obtained from several manufacturers are currently being tested as possible candidates for nickel electrodes. Over 7,000 cycles of life cycle testing have been accumulated at 40 percent DOD, using the lightweight fiber electrode in a boiler plate Ni-H2 cell with stable voltage.

• Research Organization: National Aeronautics and Space Administration, Cleveland, OH (United States). Lewis Research Center
• OSTI ID: 5242885
• Report Number(s): N-92-20493; NASA-TM--105591; E--6922; NAS--1.15:105591; CONF-9203157--
• Country of Publication: United States
• Language: English

Related Subjects

25 ENERGY STORAGE
250903* -- Energy Storage-- Batteries-- Materials
Components
& Auxiliaries
AEROSPACE INDUSTRY
DEPOSITION
ELECTRIC BATTERIES
ELECTRIC POTENTIAL
ELECTROCHEMICAL CELLS
ELECTRODEPOSITION
ELECTRODES
ELECTROLYSIS
ELEMENTS
FABRICATION
FIBERS
HYDROGEN COMPOUNDS
HYDROXIDES
IMPREGNATION
INDUSTRY
LYSIS
METAL-GAS BATTERIES
METALS
NICKEL
NICKEL COMPOUNDS
NICKEL HYDROXIDES
NICKEL-HYDROGEN BATTERIES
OXYGEN COMPOUNDS
PERFORMANCE TESTING
SERVICE LIFE
SINTERING
STABILITY
SURFACE COATING
TESTING
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
WEIGHT