Design Fundamentals of High Power Density, Pulsed Discharge, Lead‐Acid Batteries: II . Modeling
| Autor: | Douglas N. Bennion, Rodney M. LaFollette |
|---|---|
| Rok vydání: | 1990 |
| Předmět: |
Battery (electricity)
Materials science Mathematical model Renewable Energy Sustainability and the Environment Precipitation (chemistry) business.industry Electrical engineering Condensed Matter Physics Energy storage Surfaces Coatings and Films Electronic Optical and Magnetic Materials Electrochemical cell Electrode Materials Chemistry Electrochemistry Composite material business Porous medium Lead–acid battery |
| Zdroj: | Journal of The Electrochemical Society. 137:3701-3707 |
| ISSN: | 1945-7111 0013-4651 |
| DOI: | 10.1149/1.2086290 |
| Popis: | Two time-dependent, one dimensional mathematical models of lead-acid cells have been solved to help understand the pulsed discharge behavior (0.002 second discharge) of thin cells. One model considered only the outer (cross-sectional) surface area of the electrodes; the other assumed that only the surface area internal to the porous electrodes contributed significantly. The porous electrode model was a macroscopic model which ignored the concentration gradients within the microscopic electrode pores. it was found that the model which considered the outer surface area more accurately predicted experimentally observed behavior during the initial 0.0001 s of discharge. When the porous electrode model was altered to include acid concentration variations within the electrode pores, it also predicted the behavior of experimental cells during this initial 0.001 s of discharge. The effects of delayed PbSO{sub 4} precipitation were also included in the porous electrode model. When this was done, the model successfully predicted the shape of discharge curves from experimental cells for longer time periods. |
| Databáze: | OpenAIRE |
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