Hydride generation from the Exide load-leveling cells

Conference · Fri May 01 04:00:00 EDT 1987

OSTI ID:6345085

Marr, J J; Smaga, J A

Stibine and arsine evolution from lead-acid cells in a 36-kWh Exide load-leveling module was measured as this module approached 1900 cycles of operation. A gas-collection apparatus enabled us to determine the maximum and average rates for evolution of both toxic hydrides. Hydride generation began once the cell voltage exceeded 2.4 V. The maximum rate for arsine occurred just above 2.5 V and consistently preceded the peak rate for stibine for each sampled cell. The average rates of hydride generation were found to be 175 ..mu..g/min for stibine and 12.6 ..mu..g/min for arsine. The former rate proved to be the critical value in determining safe ventilation requirements for cell off-gases. The minimum airflow requirement was calculated to be 340 L/min per cell. Projections for a hypothetical 1-MWh Exide battery without an abatement system indicated that the normal ventilation capacity in the Battery Energy Storage Test facility provides nearly five times the airflow needed for safe hydride removal.

• Research Organization: Argonne National Lab., IL (USA)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 6345085
• Report Number(s): CONF-871027-23; ON: DE87011361
• Country of Publication: United States
• Language: English

Related Subjects

20 FOSSIL-FUELED POWER PLANTS
200107 -- Fossil-Fueled Power Plants-- Off-Peak Energy Storage-- (1980-)
25 ENERGY STORAGE
250902* -- Energy Storage-- Batteries-- Performance & Testing
ANTIMONY COMPOUNDS
ANTIMONY HYDRIDES
ARSENIC COMPOUNDS
ARSENIC HYDRIDES
CHEMICAL REACTION YIELD
ELECTRIC BATTERIES
ELECTRIC UTILITIES
ELECTROCHEMICAL CELLS
ENERGY STORAGE
HYDRIDES
HYDROGEN COMPOUNDS
LEAD-ACID BATTERIES
OFF-PEAK ENERGY STORAGE
PEAKING POWER PLANTS
POWER PLANTS
PUBLIC UTILITIES
SAFETY
STORAGE
VENTILATION
YIELDS