H
ELECTRICITY
H
ELECTRICITY
H01
ELECTRIC ELEMENTS
H01
ELECTRIC ELEMENTS
H01M
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
H01M
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
8/00
Fuel cells; Manufacture thereof
8/00
Fuel cells; Manufacture thereof
H01M8/04
Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
H01M8/04
Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
H01M8/04082
Arrangements for control of reactant parameters, e.g. pressure or concentration
H01M8/04082
Arrangements for control of reactant parameters, e.g. pressure or concentration
H01M8/04089
of gaseous reactants
H01M8/04089
of gaseous reactants