| 摘要 |
The invention relates to a high-temperature polymer electrolyte fuel cell system (HT-PEFC) comprising at least one fuel cell with an anode, an anode chamber, a cathode, a cathode chamber, an acid-doped polybenzimidazole (PBI) membrane located between anode and cathode, and at least one fuel circuit with an associated additional separate medium for removing oxygen or water. During the operation of this HT-PEFC system, especially during heating or cooling or shutdown of the system, oxygen and/or water is removed from the cathode waste gas or anode waste gas of the fuel cell in at least one fuel circuit by means of the additional separate medium. Thus the invention advantageously avoids the formation of liquid water during this phase, which could detrimentally wash the acid from the membrane. |
