Improvement of Proton Ceramic Fuel Cells with Thin Film BCZY Electrolyte
Improvement of Proton Ceramic Fuel Cells with Thin Film BCZY Electrolyte
复制标题
用薄膜 BCZY 电解质改进质子陶瓷燃料电池
DOI：
10.1149/06801.2545ecst
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
Y. Mizutani
中科院分区：
文献类型：
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作者：
Y. Okuyama;N. Ebihara;K. Okuyama;Y. Mizutani
研究了BaCe 0. 5薄膜质子陶瓷燃料电池的性能。6Zr 0。2Y0。2 O3-δ（BCZY 622）电解质的研究。具有La 0. 8Sr0. 2 MnO 3-δ阴极和Ni阳极的性能较差，且短期内会发生降解。阳极的过电位和欧姆损耗是导致电解质劣化的主要因素，并且观察到Ni在BCZY电解质中的固溶体。采用热重分析和交流阻抗分析方法研究了BCZY和掺杂5wt%NiO的BCZY 622的电导率和质子浓度。NiO的引入降低了BCZY 622的电导率和质子浓度。为了避免短期退化，电池结构、制造工艺和阴极材料都进行了改进。结果表明，采用BCZY 622、Ba 0. 5Sr0. 5Co0。8Fe0. 2 O3-δ阴极和Ni/BCZY 622金属陶瓷阳极在873- 1073 K的较宽温度范围内均表现出200- 300 mW/cm 2的良好功率密度，且具有稳定的发电性能。
The performance of protonic ceramic fuel cells (PCFCs) using thin film BaCe0. 6Zr0. 2Y0. 2O3-δ (BCZY622) electrolyte has been studied. The reference cell with the La0. 8Sr0. 2MnO3-δ cathode and Ni anode showed poor performance and short-term degradation. The overpotential of the anode and ohmic loss were the major factors for degradation, and a solid solution of Ni in the BCZY electrolyte has been observed. The electrical conductivity and the proton concentration of BCZY and BCZY622 doped with 5wt% NiO were measured by an impedance analysis and thermogravimetric analysis. The electrical conductivity and the proton concentration of BCZY622 decreased by introducing NiO. To avoid short-term degradation, the cell construction, manufacturing process, and cathode materials were improved. As a result, a carefully designed PCFC with thin film BCZY622, Ba0. 5Sr0. 5Co0. 8Fe0. 2O3-δ cathode and Ni/BCZY622 cermet anode showed good power density of 200-300mW/cm 2 in the wide temperature range of 873-1073K, and had stable power generation.