Use of Internal Catalysts

More recently, a range of 6-V and 12-V, 125-Ah monobloc batteries with/without catalysts have been tested under standby float conditions for extended periods at room temperature and the gassing rates recorded. The results for the 6-V batteries are presented in Table 5.8. Batteries 1 and 2 were not fitted with catalysts and had individually sealed cell compartments. Batteries 3 and 4 had a single catalyst located in a common headspace. The data obtained from tests on 12-V, 25-Ah batteries with two catalysts in the common headspace are shown in Fig. 5.14. Those without 

Recent studies have provided a better understanding of the behaviour of negative plates in VRLA lead-acid batteries. The major conclusions of this work can be summarized as follows. 

Pierson, C.E. Weinlein, C.E. Wright, in D.H. Collins (Ed.), Power Sources 5, Research and Development in Non-mechanical Electrical Power Sources, Academic Press, London, UK, 1975, pp. 97 108. 

Proceedings of the 22nd International Telecommunications Energy Conference, Phoenix, AZ, USA, IEEE, 2000, pp. 447-452. 

Ceylan, N.P. Haigh, T. Lwin, C.G. Phyland, D.A.J. Rand, D.G. Vella, ALABC Project N3.1, Influence of residual elements in lead and expander materials on the oxygen- andjor hydrogen-gassing rates of lead-acid batteries. Semi-annual Report 1 July to 31 December 2001, Advanced Lead-Acid Battery Consortium, Research Triangle Park, NC, USA, 2001. 

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