| 摘要 |
There is disclosed a fuel cell in which an insulating material is disposed, whereby the thermal diffusion of the inside and outside of a fuel cell can be suppressed to suppress the deterioration of the performance of the fuel cell due to a temperature drop. Moreover, the physical properties of the insulating material are specified, whereby appropriate insulating properties required in the fuel cell can be obtained, and startup properties are improved. A fuel cell 1 has a cell stack 10 in which a plurality of unit cells are stacked, and terminal plates 14A and 14B disposed on both sides of the cell stack 10 in a cell stack direction thereof. The fuel cell comprises an insulating portion 24 having an insulating material 21 and holding plates 22 and 23 which hold the insulating material 21 from both the sides of the insulating material in the cell stack direction, the insulating material 21 is held between the holding plates 22 and 23, and the insulating material 21 has a thermal conductivity of 0.1 W/mK or less and a porosity of 70% or more. |
