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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H01M4/86
Inert electrodes with catalytic activity, e.g. for fuel cells
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H01M4/90
Selection of catalytic material
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H01M4/92
Metals of platinum group
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H01M4/925
supported on carriers, e.g. powder carriers
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H01M4/926
on carbon or graphite
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