Porous body, porous current collector, and solid oxide fuel cells including them

Abstract

A porous body includes a first framework having a three-dimensional mesh structure, wherein the first framework consists of a framework main body and an inner portion that is hollow and that is surrounded by the framework main body, the framework main body consists of a first layer and a second layer, the first layer is located on an outer surface side of the framework main body, the second layer is located on the inner portion side of the framework main body, the framework main body contains 70 mass % or more of nickel and cobalt in total, a cobalt content ratio in the first layer is 50 mass % or more, a cobalt content ratio in the second layer is less than 50 mass %, and a ratio of a thickness of the first layer to a thickness of the framework main body is 10% or more and 90% or less.

Dependencies are inferred from the claim text.