US 11,757,106 B2
Porous body and fuel cell including the same
Koma Numata, Osaka (JP); Masatoshi Majima, Osaka (JP); Mitsuyasu Ogawa, Osaka (JP); Kazuki Okuno, Osaka (JP); Naho Mizuhara, Osaka (JP); and Ryoko Kanda, Osaka (JP)
Assigned to SUMITOMO ELECTRIC INDUSTRIES, LTD., Osaka (JP)
Appl. No. 16/964,101
Filed by SUMITOMO ELECTRIC INDUSTRIES, LTD., Osaka (JP)
PCT Filed Dec. 24, 2019, PCT No. PCT/JP2019/050559
§ 371(c)(1), (2) Date Jul. 22, 2020,
PCT Pub. No. WO2021/130849, PCT Pub. Date Jul. 1, 2021.
Prior Publication US 2023/0099013 A1, Mar. 30, 2023
Int. Cl. H01M 4/00 (2006.01); H01M 8/0232 (2016.01); C22C 19/03 (2006.01); H01M 8/0236 (2016.01); H01M 8/0241 (2016.01)
CPC H01M 8/0232 (2013.01) [C22C 19/03 (2013.01); H01M 8/0236 (2013.01); H01M 8/0241 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A porous body comprising a framework having a three-dimensional network structure,
the framework having a body including crystal grains including nickel and cobalt as constituent elements,
the cobalt having a proportion in mass of 0.2 or more and 0.8 or less with respect to a total mass of the nickel and the cobalt,
the crystal grains having a shorter grain diameter of 2 μm or more, as determined in a first observed image obtained by observing the body of the framework in cross section at a magnification of 200 times, wherein
when the body of the framework is observed in cross section at a magnification of 3,000 times to obtain a second observed image, the second observed image presents in any area 10 μm square thereof five or less voids each having a longer diameter of 1 μm or more.