Bilayer Cell Model and System Design of Highly Efficient Protonic Ceramic Fuel Cells
Bilayer Cell Model and System Design of Highly Efficient Protonic Ceramic Fuel Cells
复制标题
高效质子陶瓷燃料电池双层电池模型与系统设计
DOI：
10.1149/11106.1075ecst
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发表时间：
2023
期刊：
影响因子：
--
通讯作者：
J. A. Ortiz
中科院分区：
文献类型：
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作者：
J. Otomo;Shun Yamate;J. A. Ortiz
通过减小双层电解质质子陶瓷燃料电池（PCFC）的漏电流，设计了一种高效发电系统。最佳的电解质设计是通过优化电池效率的基础上，假设氢作为燃料的电解质材料的传输性能。同时，还考虑了电极对整体电池性能的影响。此外，PCFC系统建模使用所设计的细胞。两个PCFC系统进行了研究。一种是以氢为燃料，另一种是以甲烷为燃料。研究发现，由BaZr0.8Y0.2O3−δ（BZY）和一层薄薄的钨酸镧（La 28-xW 4 + xO 54 +3x/2 v2 -3x/2）组成的双层电解质在600°C下最有效地降低漏电流。该电池在0.93 V电压下，系统效率分别为69%（LHV，DC）和65%（LHV，AC），漏电流比小于1%，以氢气为燃料时，燃料利用率为95%。另一方面，当使用甲烷作为燃料时，效率增加到78%（LHV，DC）和74%（LHV，AC）。
A highly efficient power generation system was designed by minimizing leakage current in protonic ceramic fuel cells (PCFCs) using bilayer electrolytes. The best electrolyte designs are achieved by optimizing the cell efficiency based on the transport properties of electrolyte materials assuming hydrogen as fuel. In parallel, the effect of the electrodes on the overall cell performance was also considered. Additionally, a PCFC system was modeled using the designed cells. Two PCFC systems were investigated. One based on hydrogen as a fuel, and another based on methane as fuel. It was found that a bilayer electrolyte consisting of BaZr0.8Y0.2O3−δ (BZY) with a thin layer of lanthanum tungstate (La28-xW4+xO54+3x/2v2-3x/2) is the most effective at reducing leakage current at 600°C. For this cell, a system efficiency of 69% (LHV, DC) and 65% (LHV, AC) were obtained under the cell voltage of 0.93 V, with a leakage current ratio of less than 1%, and fuel utilization of 95% when using hydrogen as fuel. On the other hand, when methane was used as fuel, the efficiency increased up to 78% (LHV, DC) and 74% (LHV, AC).