Patent ID: 8999605
Filing Date: 2015-04-07
Classification: H01M,Y02E,Y10T

Abstract:
1. A fuel cell bipolar plate assembly comprising: a cathode plate comprising a core material, a first surface material coupled to a first side of said core material, and a second surface material coupled to a second side of said core material, said first surface material and said second surface material being directly coupled to said core material of the cathode plate simultaneously in their molten states; wherein said first surface material and said second surface material have a different composition from said core material; and an anode plate coupled to said cathode plate to define one or more coolant flow channels between the anode and cathode plates, said anode plate comprising a core material, a first surface material coupled to a first side of said core material, and a second surface material coupled to a second side of said core material, said first surface material and said second surface material being directly coupled to said core material of the anode plate simultaneously in their molten states; wherein said first surface material and said second surface material have a different composition from said core material; wherein said first surface material of said cathode plate comprises at least one of aluminum alloys, gold and its alloys, titanium and its alloys, niobium and its alloys, tantalum and its alloys, stainless steel, nickel and its alloys, or combinations thereof; wherein said second surface material of said cathode plate comprises unalloyed aluminum wherein the composition of said first surface material of said cathode plate is different from the composition of said second surface material of said cathode plate wherein said core material of said cathode plate comprises aluminum.