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Nickel cadmium batteries

閱讀：579發(fā)布：2021-08-06

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1. IN THE MANUFACTURE OF ALKALINE STORAGE BATTERIES EMPLOYING CADMIUM AS THE ACTIVE MATERIAL OF THE NEGATIVE PLATE, THE IMPROVEMENT WHICH CONSISTS ESSENTIALLY OF PRODUCING SAID NEGATIVE PLATE BY DIRECT ELECTRODEPOSITION OF CADMIUM SPONGE FROM AN AQUEOUS BATH CONTAINING CADMIUM ION AND CHLORIDE ION ON TO AN ELECRONICALLY CONDUCTING SUBSTRATE WHICH IS ELECTROPLATABLE BY METALLIC CADMIUM AND WHICH IS SUBSTANTIALLY INERT AS THE NEGATIVE PLATE OF ALKALINE STORAGE BATTERIES, THE CADMIUM ION CONCENTRATION IN SAID BATH BEING BETWEEN ABOUT 3 AND ABOUT 245 GRAMS PER LITRE AND THE CHLORIDE ION CONCENTRATION IN SAID BATH BEING BETWEEN ABOUT THE STOICHIOMETRICAL VALUE FOR CADMIUM CHLORIDE BASED ON THE CADMIUM ION PRESENT AND ABOUT 190 GRAMS PER LITRE, THE CATHODE CURRENT DENSITY BELONG BETWEEN ABOUT 1 MILLIAMPERE PER SQUARE CENTIMETRE AND ABOUT 60 MILLIAMPERES PER SQUARE CENTIMETRE, THE CADMIUM AND CHLORIDE ION CONCENTRATION AND THE CURRENT DENSITY BEIGN SUCH THAT AN ADHERENT AND COHERENT ELECTROCHEMICALLY-ACTIVE CADMIUM SPONGE DEPOSIT IS OBTAINED AND SAID SUBSTRATE.
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