US 11,916,263 B2
Cross-flow interconnect and fuel cell system including same
Michael Gasda, Mountain View, CA (US); Vijay Srivatsan, Sunnyvale, CA (US); Robert M. Hintz, San Jose, CA (US); Swaminathan Venkataraman, Cupertino, CA (US); Padiadpu Shankara Anantha, Bangalore (IN); Emad El Batawi, Sunnyvale, CA (US); Cheng-Yu Lin, Cupertino, CA (US); Sagar Mainkar, Sunnyvale, CA (US); Gilbert Richards, San Jose, CA (US); and Jonathan Scholl, Mountain View, CA (US)
Assigned to BLOOM ENERGY CORPORATION, San Jose, CA (US)
Filed by BLOOM ENERGY CORPORATION, San Jose, CA (US)
Filed on May 11, 2022, as Appl. No. 17/662,956.
Application 17/662,956 is a continuation of application No. 16/424,930, filed on May 29, 2019, granted, now 11,355,762.
Claims priority of provisional application 62/678,362, filed on May 31, 2018.
Prior Publication US 2022/0278341 A1, Sep. 1, 2022
Int. Cl. H01M 8/0247 (2016.01); H01M 8/2425 (2016.01); H01M 8/0258 (2016.01); H01M 8/12 (2016.01)
CPC H01M 8/0247 (2013.01) [H01M 8/0258 (2013.01); H01M 8/2425 (2013.01); H01M 2008/1293 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A fuel cell stack, comprising:
interconnects stacked over one another;
fuel cells disposed between the interconnects, facing fuel and air flow fields of adjacent interconnects;
a fuel inlet riser at least partially defined by the inlets of the interconnects and configured to provide fuel to the fuel flow fields;
a fuel outlet riser at least partially defined by fuel outlets of the interconnects and configured to receive anode exhaust from the fuel flow fields;
riser seals disposed on a riser seal region of each interconnect and configured to prevent fuel in the fuel inlet and outlet risers from entering the air flow fields; and
perimeter seals disposed on a perimeter seal region of each interconnect and configured to prevent air from entering the fuel flow fields;
wherein the riser and perimeter seals are formed of a seal material comprising, by weight:
SiO2 in an amount ranging from 35% to about 55%;
B2O3 in an amount ranging from about 0.5% to about 15%;
Al2O3 in an amount ranging from about 0.5% to about 5%;
CaO in an amount ranging from about 5% to about 30%;
MgO in an amount ranging from about 2% to about 25%;
La2O3 in an amount ranging from about 2% to about 12%; and
at least 0.5% of at least one of BaO and SrO.