By J. ROUSSE.
In order to accumulate electricity for the production of light or
motive power, the author has arranged secondary batteries, which
differ from those of M.G. Planté. At the negative pole he uses a sheet
of palladium, which, during the electrolysis, absorbs more than 900
times its volume of hydrogen. At the positive pole he uses a sheet of
lead. The electrolyzed liquid is sulphuric acid at one tenth. This
element is very powerful, even when of small dimensions. Another
secondary element which has also given good results, is formed at the
negative pole of a slender plate of sheet-iron. This plate absorbs
more than 200 times its volume of hydrogen when electrolyzed in a
solution of ammonium sulphate. The positive pole is formed of a plate
of lead, pure or covered with a stratum of litharge, or pure oxide, or
all these substances mixed. These metallic plates are immersed in a
solution containing 50 per cent. of ammonium sulphate. Another
arrangement is at the negative pole, sheet-iron; at the positive pole
a cylinder of ferro-manganese. The electrolyzed liquid contains 40 per
cent. ammonium sulphate.
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