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교차류형 100W급 용융탄산염 연료전지 스택 장기운전평가
임희천(H . C . Lim),설진호(J . H . Seol),류철성(C . S . Ryu),이창우(C . W . Lee),홍성안(S . A . Hong) 한국수소및신에너지학회 1995 한국수소 및 신에너지학회논문집 Vol.6 No.2
A 100kW class stack consisting of 10 molten carbonate fuel cells has been fabricated. Internally manifold stack has been tested for endurance. Each cell in the stack had an electrode area of 100kW and reactant gases were distributed in each cells in a cross-flow configuration. Initial and long term operation performance of the stack was investigated as a function of gas utilization using a specially designed small scale stack test facility. It was possible to have a stack with an output of more than 100W using an anode gas of 72% H₂/18% CO₂/10%H₂O and cathode gas of 33% O₂/67% CO₂ and 70% Air 30% CO₂. The output and voltage of the stack at a current 15A(150mA/cm²) and gas utilization of 0.4 showed 125.8W and 8.39V respectively by elapsed time of 310 hours operation. In long term operation characteristics, the voltage drop of 52.4mV/1000hour was observed after more than 1,840 hours operation. Among the voltage drop, the OCV loss was highest than other voltage loss such as internal resistance and electrode polarization. Non uniformity of 2voltages and degradation of cell voltage in the stack was observed in according to changing the utilization rate after a long term operation. Further work for increasing the performance prolonging the life of the stack are required.