06 Electrical power supply and utilization (scientific, technical) The electrocatalytic properties of a fuel cell catalyst ink in thin film form based on Vulcan XC72/Pt (30%) and Nafion was investigated by means of a flow cell of impinging jet type in flows of H2 and HZ + CO dissolved in Hz SOa elec
Understanding and defeating the physical mechanisms limiting the capacity of lead-acid batteries
β Scribed by Philip W. Appel; Dean B. Edwards
- Publisher
- Springer
- Year
- 1996
- Tongue
- English
- Weight
- 698 KB
- Volume
- 3
- Category
- Article
- ISSN
- 0929-1881
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β¦ Synopsis
In this paper, we summarize previous work [1][2][3][4][5][6] that helped to establish the physical processes limiting the capacity of lead-acid batteries. .Ion diffusion and paste conductivity are the dominate processes that limit capacity over a wide range of discharge rates. A model which includes both these processes was developed and used to understand the role of additives in the positive paste. With a basic understanding of the physical mechanisms limiting capacity and equipped with the model, we are pursuing designs for dramatically improving the capacity of lead-acid batteries. Some of these designs will be discussed in this paper.
π SIMILAR VOLUMES
As an alternative to the empirical Peukert equation, whose validity is restricted to intermediate discharge rates, a new equation for the limiting capacity of the lead/acid cell is proposed, formally derived from an approximate closed form solution of a two finite compartment diffusion problem. The