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Patent classifications
H
ELECTRICITY
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H01
ELECTRIC ELEMENTS
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H01M
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
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4/00
Electrodes
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H01M4/02
Electrodes composed of, or comprising, active material
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H01M2004/026
characterised by the polarity
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H01M2004/027
Negative electrodes
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