| 摘要 |
A solid oxide fuel cell includes a unit cell, a cell cap, an internal current collector and an external current collector. The unit cell includes a first electrode, an electrolyte and a second electrode. The cell cap seals one end of the unit cell, and one or more through-holes are formed in the center axis direction of the unit cell in the cell cap. The internal current collector collects current in the interior of the unit cell. The external current collector is provided to the interior of the through-hole to be electrically coupled to the internal current collector. In the solid oxide fuel cell, a welding portion is formed to connect an end of the internal current collector and an end of the external current collector to each other through the through-hole of the cell cap and to seal the through-hole. Accordingly, contact resistance is decreased, thereby enhancing current collection efficiency. |
