Fuel cell stack
AssigneeNuvera Fuel Cells Europe S.R.L.
InventorsAmedeo Conti, Antonino Toro
Life of this patent
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Abstract
A membrane fuel cell stack comprising metal current-collecting plates of high electrical conductivity made of aluminum or copper, having a reduced planform with respect to the one of the elementary cells, the galvanic-type corrosion phenomena affecting the current-collecting plates of the prior art and the consequent metal ion release in the circulating water are overcome.
Claims12
A stack of elementary fuel cells, each cell being delimited by bipolar plates provided with a first multiplicity of holes for the passage of process fluids and with an optional second multiplicity of holes for the passage of tie-rods, comprising a pair of current-collecting plates and a pair of compression plates, said current-collecting plates positioned externally to the elementary cells in correspondence of the positive and negative terminals, said compression plates located at the two extremities of the stack externally to said current-collecting plates, wherein said current-collecting plates are isolated from said process fluids and said current-collecting plates have a reduced planform with respect to the planform of said bipolar plates and at least coextensive with the elementary cell active area.
(canceled)
Dependencies are inferred from the claim text.