M. Saakes et al., INVESTIGATIONS OF THE NEGATIVE PLATE OF LEAD ACID CELLS .2. VERIFICATION WITH 2-V CELLS, Journal of power sources, 47(1-2), 1994, pp. 149-158
Tests in 2 V cells were performed to study the cause of the decrease o
f capacity and cell voltage. It was found that the capacity of aged ce
lls increased significantly when expanders like Indulin C and Na-1-nap
hthol-4-sulfonate were added. The cell voltage, lowered by an excess o
f hydrogen evolution, increased after addition of anisaldehyde. The be
neficial effect of both the expanders and inhibitor lasted for several
tens of cycles. Addition of anisaldehyde in an aged 2 V submarine cel
l (8.9 kAh), at a temperature of 30-degrees-C, gave an increase of cel
l voltage of 145 mV. This increase is almost entirely due to an increa
se in overvoltage of the hydrogen-evolution reaction at the negative p
late. Measurements in 2 V cells confirm the results of short time test
s on smooth lead electrodes described in part 1.