CAJ | 학술논문

为了提高清洁高效发电技术—熔融碳酸盐燃料电池的性能，实验测试了电解质隔膜形式、电极种类以及电池有效面积的单电池电化学阻抗谱特性，并采用 ZSimpWin软件对测试结果进行了拟合和分析。结果表明：以水为溶剂的隔膜性能与以正丁醇为溶剂的隔膜性能相当；纯Ni电极较采用钢带为支撑的Ni电极性能提升，主要是由于阴阳极电荷转移电阻的显著降低以及阳极与电解质间有效接触面积(电池面积)的增大；当单电池面积增大时，电池的瓦伯格阻抗增大了36％。可见，在电池面积放大过程中，改善燃料和氧化剂的输运特性是大面积电池开发中的重点。
위료제고청길고효발전기술—용융탄산염연료전지적성능，실험측시료전해질격막형식、전겁충류이급전지유효면적적단전지전화학조항보특성，병채용 ZSimpWin연건대측시결과진행료의합화분석。결과표명：이수위용제적격막성능여이정정순위용제적격막성능상당；순Ni전겁교채용강대위지탱적Ni전겁성능제승，주요시유우음양겁전하전이전조적현저강저이급양겁여전해질간유효접촉면적(전지면적)적증대；당단전지면적증대시，전지적와백격조항증대료36％。가견，재전지면적방대과정중，개선연료화양화제적수운특성시대면적전지개발중적중점。
To improve the performance of molten carbonate fuel cells (MCFC),single cells were tested by electrochemical impedance spectrum (EIS).Moreover,the ZSimpWin software was used for EIS fitting and analysis.The results show that,the performance of the membrane using water as the solvent was equiva-lent to that using n-butanol as the solvent.Compared to Ni electrode with steel support,the pure Ni elec-trode's performance has been improved,which was mainly due to the reduction in the charge transfer resist-ance of cathode and anode,and an increase in effective contacting area between the anode and electrolyte. When the single cell's area increased from 90 cm2 to 225 cm2 ,its Warburg impedance was increased by 3 6%.Therefore,improving the transportation performance of the fuel and oxidizer is one of the key points in large cell area development.