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
H01M8/04223
during start-up or shut-down; Depolarisation or activation, e.g. purging; Means for short-circuiting defective fuel cells
H01M8/04223
during start-up or shut-down; Depolarisation or activation, e.g. purging; Means for short-circuiting defective fuel cells