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Improving the performance of a high power, lead–acid battery with paste additives

In this paper, we investigate the use of paste additives to improve the performance of a horizontal plate, lead–acid battery. The horizontal plate battery can deliver high power for electric and hybrid electric vehicle applications. We develop a series of designs having different paste additives to continuously improve the specific energy ŽW hrkg. performance of this battery. Computer models, previously developed and reported, are used to estimate the specific energy performance of these designs. The baseline, horizontal plate battery containing no additives has a specific energy of 30–35 W hrkg. . | ELSEVIER Journal of Power Sources 85 2000 137-144 www.elsevier.com locate jpowsour Improving the performance of a high power lead-acid battery with paste additives Troy C. Dayton Dean B. Edwards Department of Mechanical Engineering University of Idaho Moscow ID USA Accepted 22 September 1999 Abstract In this paper we investigate the use of paste additives to improve the performance of a horizontal plate lead-acid battery. The horizontal plate battery can deliver high power for electric and hybrid electric vehicle applications. We develop a series of designs having different paste additives to continuously improve the specific energy W h kg performance of this battery. Computer models previously developed and reported are used to estimate the specific energy performance of these designs. The baseline horizontal plate battery containing no additives has a specific energy of 30-35 W h kg. The final design in our design progression uses both porous and conductive paste additives to provide an estimated specific energy of 60-70 W h kg. 2000 Elsevier Science S.A. All rights reserved. Keywords Lead-acid Battery Additives Electric vehicle EV Power Utilization 1. Introduction The future of electric and hybrid electric vehicles are being widely discussed in the popular press as well as by regulators and legislators. Invariably much of the discussion centers on the most appropriate battery technology for these vehicles. Interestingly studies done by the Jet Propulsion Laboratory 1 2 concluded that the most feasible electric vehicle EV is a limited range vehicle i.e. 100-mile range and the most attractive battery for this vehicle is the lead-acid battery. In a study 3 conducted for the Department of Energy the lead-acid battery was evaluated to have the highest technical merit and lowest developmental risk for use in electric vehicles when compared to other battery candidates. General Motor s electric vehicle EV1 uses a sealed lead-acid battery and demonstrates the validity of