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An electrochemical fuel cell stack with improved reactant manifolding and sealing includes a pair of separator plates interposed between adjacent membrane electrode assemblies. Passageways fluidly interconnecting the anodes to a fuel manifold, and interconnecting the cathodes to an oxidant manifold,

An electrochemical fuel cell stack with improved reactant manifolding and sealing includes a pair of separator plates interposed between adjacent membrane electrode assemblies. Passageways fluidly interconnecting the anodes to a fuel manifold, and interconnecting the cathodes to an oxidant manifold, comprise at least one fluid passageway formed between adjoining non-active surfaces of the pairs of separator plates. The passageways extend through one or more ports penetrating the thickness of one of the plates thereby fluidly connecting the manifold to the opposite active surface of that plate, and the adjacent electrode. The ports comprise walls that have surfaces that are angled more than 0 degrees and less than 90 degrees with respect to the direction of fluid flow in the fluid passageway upstream of the port. During operation, electrochemical fuel cell stacks comprising fluid ports with angled walls benefit from reduced pressure loss. Turbulence, which is believed to have adverse effects on the membrane electrode assemblies of solid polymer fuel cells, is also reduced.

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An electrochemical fuel cell stack with improved reactant manifolding and sealing includes a pair of separator plates interposed between adjacent membrane electrode assemblies. Passageways fluidly interconnecting the anodes to a fuel manifold, and interconnecting the cathodes to an oxidant manifold,

An electrochemical fuel cell stack with improved reactant manifolding and sealing includes a pair of separator plates interposed between adjacent membrane electrode assemblies. Passageways fluidly interconnecting the anodes to a fuel manifold, and interconnecting the cathodes to an oxidant manifold, comprise at least one fluid passageway formed between adjoining non-active surfaces of the pairs of separator plates. The passageways extend through one or more ports penetrating the thickness of one of the plates thereby fluidly connecting the manifold to the opposite active surface of that plate, and the adjacent electrode. The ports comprise walls that have surfaces that are angled more than 0 degrees and less than 90 degrees with respect to the direction of fluid flow in the fluid passageway upstream of the port. During operation, electrochemical fuel cell stacks comprising fluid ports with angled walls benefit from reduced pressure loss. Turbulence, which is believed to have adverse effects on the membrane electrode assemblies of solid polymer fuel cells, is also reduced. icle having been formed from a powder mixture selected from the group of mixtures consisting of: at least 60 at % Ni powder and at least one of Cr powder, W powder, V powder, Mo powder, Cu powder, Al powder, Ce powder, YSZ powder, Y powder, Mg powder, and RE powder; the article having a fine and homogeneous grain structure; and having a dominant cube oriented {100} orientation texture; and further having a Curie temperature less than that of pure Ni. violet/infrared absorbent glass plate as claimed in claim 1, wherein the visible light transmittance is equal to or more than 80% when measured by using CIE illumination A, solar energy transmittance is equal to or less than 83%, and ultraviolet transmittance specified by ISO is equal to or less than 17.5%. 15. An ultraviolet/infrared absorbent glass plate as claimed in claim 14, wherein a dominant wavelength is in a range of 530 to 565 nm when measured by using CIE illuminant C and excitation purity is equal to or less than 2.5%. 16. An ultraviolet/infrared absorbent glass plate as claimed in claim 14, wherein said visible light transmittance is equal to or more than 83%. 17. An ultraviolet/infrared absorbent glass plate as claimed in claim 14, wherein chromaticity expressed as a, b by using Lab coordinates is in ranges of -5≤a≤-1 and 1≤b≤5. 18. An ultraviolet/infrared absorbent glass plate as claimed in claim 17, wherein the chromaticity expressed as a, b by using the Lab coordinates is in ranges of -4≤a≤-2 and 1≤b≤5. 19. An ultraviolet/infrared absorbent glass plate as claimed in claim 14, wherein solar light transmittance is qual to or less than 80%. 20. An ultraviolet/infrared absorbent glass plate as claimed in claim 14, wherein the glass has a thickness between 3.25 mm to 6.25 mm. 21. A colored film-coated ultraviolet/infrared absorbent glass plate wherein a colored film with a thickness between 30 nm and 300 nm including silicon oxide and fine grains of gold is applied onto a surface of the ultraviolet/infrared absorbent glass plate according to claim 14. 22. A colored film-coated ultraviolet/infrared absorbent glass plate as claimed in claim 21, wherein the colored film comprises the silicon oxide of more than 50 wt. % and equal to or less than 95 wt. %, at least one selected from the group consisting of zirconium oxide, tantalum oxide, titanium oxide, aluminum oxide and cerium oxide in a range of 0 to 30 wt. % and the fine grains of gold in a range of 5 to 20 wt. %. 23. A colored film-coated ultraviolet/infrared absorbent glass plate as claimed in claim 22, wherein the colored film comprises the silicon oxide in a range of 60 to 93 wt. %, at least one selected from the group consisting of the zirconium oxide, the tantalum oxide, the titanium oxide, the aluminum oxide and the cerium oxide in a range of 0 to 15 wt. % and the fine grains of the gold in a range of 7 to 17 wt. %. 24. A colored film-coated ultraviolet/infrared absorbent glass plate as claimed in claim 21, wherein chromaticity expressed as a, b by using Lab coordinates is in ranges of -3≤a≤10 and -6≤b≤3 and lightness expressed as L is in a range of 40≤L≤90. 25. A colored film-coated ultraviolet/infrared absorbent glass plate as claimed in claim 24, wherein said chromaticity is in ranges of -2≤a≤8 and -5≤b≤2 and said lightness L is in a range of 50≤L≤90. 26. A colored film-coated ultraviolet/infrared absorbent glass plate as claimed in claim 21, wherein when chromaticity expressed as a, b by using Lab coordinates of the colored film-coated ultraviolet/infrared absorbent glass plate is taken as a2,b2when measured by CIE illuminant C, and that of the ultraviolet/infrared absorbent glass plate which is a base of the colored film-coated ultraviolet/infrared absorbent glass plate is taken as a1,b1when measured by CIE illuminant C, the ultraviolet/infrared glass plate and the colored film-coated ultraviolet/infrared absorbent glass have a relationship in ranges of a1+1≤a2≤a1+10, and b1-6≤b2≤b1. 27. A colored film-coated ultraviolet/infrared absorbent glass plate as claimed in claim 26, wherein said relationship is in ranges of a1+4≤a2≤a1+10, b1-6≤b2≤b1-2. 28. A colored film-coated ultraviolet/infrared absorbent glass plate as claimed in claim 21, wherein ultraviol