Testing device for solid oxide fuel cell

摘要

A testing device for solid oxide fuel cell (SOFC) is disclosed. The testing device which combines the original cell housing with a four-point probe equipment is set for measuring SOFC MEA. The current collectors on anode and cathode in the original cell housing are respectively replaced by four independent probe units. They are not only to collect current but also to become measuring probes. Therefore, the lateral impedance of anode and cathode can be measured. Furthermore, the local characteristics are examined by open circuit voltage (OCV), I-V curve, and electrochemical impedance spectroscopy (EIS) measurements. The results show that the lateral impedance is substantially varied with temperatures. The distributions of OCV, current density, EIS and cell voltage in long-term test at the center of the cell are different from the edge.

主权项

1. A testing device for solid oxide fuel cell, comprising:
a cathode splitter plate; an anode splitter plate, constructed the same as the cathode splitter plate and arranged at a position corresponding to the cathode splitter plate; a plurality of cathode current-collector units, each being disposed near to the cathode splitter plate at a position between the cathode splitter plate and the anode splitter plate, and each being connected to a plurality of cathode current lines and a plurality of cathode voltage lines that are arranged threading through the cathode splitter plate in respective; and a plurality of anode current-collector units, each being disposed near to the anode splitter plate at a position between the cathode splitter plate and the anode splitter plate, and each being connected to a plurality of anode current lines and a plurality of anode voltage lines that are arranged threading through the anode splitter plate in respective; wherein, the assembly of the plural cathode current-collector units are spaced from the assembly of the plural anode current-collector units by a gap for allowing a solid oxide fuel cell (SOFC) to be disposed therebetween in a manner that the SOFC is connected to the assembly of the plural cathode current-collector units by a cathode electrode thereof and simultaneously connected to the assembly of the plural anode current-collector units by an anode electrode thereof; and wherein the plural cathode current lines and the plural cathode voltage lines are arranged to extend inside and along the guidance of a plural grooves after threading through and out of the cathode splitter plate independently and respectively so as to piece out of a high-temperature furnace, and then to be connected to cathode terminals; and the plural anode current lines and the plural anode voltage lines are arranged to extend inside and along the guidance of the plural grooves after threading through and out of the anode splitter plate so as to piece out of a high-temperature furnace independently and respectively, and then to be connected to anode terminals.