Electrochemical Impedance Spectroscopy of High-Efficiency Hydrogen Membrane Fuel Cells Based on Sputter-Deposited BaCe0.8Y0.2O3−δ Thin Films
Electrochemical Impedance Spectroscopy of High-Efficiency Hydrogen Membrane Fuel Cells Based on Sputter-Deposited BaCe0.8Y0.2O3−δ Thin Films
复制标题
基于溅射沉积BaCe0.8Y0.2O3−δ薄膜的高效氢膜燃料电池的电化学阻抗谱
DOI：
10.1021/acs.jpcc.5b12593
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发表时间：
2016
影响因子：
3.7
通讯作者：
T. Ohtsuka
中科院分区：
文献类型：
--
作者：
Y. Aoki;Shohei Kobayashi;Tomoyuki Yamaguchi;E. Tsuji;H. Habazaki;K. Yashiro;Tetsuya Kawada;T. Ohtsuka
研究了由Pd固体阳极、1 μm厚的BaCe0.8Y0.2O3−δ薄膜电解质和La0.6Sr0.4Co0.2Fe0.8O3阴极组成的氢膜燃料电池（HMFC）。采用BaCe0.8Y0.2O3和Ce0.9Y0.1O2双靶射频共溅射法成功制备了单相BaCe0.8Y0.2O3−δ薄膜，并通过X射线衍射、透射电镜和波长色散X射线分析进行了验证。最大功率密度在600 °C时达到1.05 W cm-2，这一数值高于最近报道的质子传导陶瓷燃料电池（PCFC）的冠军数据。采用电化学阻抗分析法研究了阳极和阴极的极化行为。HMFC的阻抗响应可以用阴极电荷传递元件和阳极传质元件串联的等效电路来解释。与阴极极化和欧姆极化相比，Pd体相传质的贡献相对较小。
A hydrogen membrane fuel cell (HMFC) consisting of a Pd solid anode, 1 μm thick BaCe0.8Y0.2O3−δ thin-film electrolyte, and La0.6Sr0.4Co0.2Fe0.8O3 cathode was examined. A single-phase BaCe0.8Y0.2O3−δ thin film was successfully deposited by radio frequency cosputtering with BaCe0.8Y0.2O3 and Ce0.9Y0.1O2 double targets, as checked by X-ray diffraction, transmission electron microscopy, and wavelength dispersive X-ray analysis. The maximum power density reached 1.05 W cm–2 at 600 °C, and this value was higher than the champion data of the recently reported proton-conducting ceramic fuel cells (PCFCs). Electrochemical impedance analysis was performed to characterize the anode and cathode polarization behavior. The impedance responses of HMFC were explicable with an equivalent circuit built by a series connection of cathode charge-transfer elements and anode mass-transfer elements. The contribution of the mass transfer in Pd bulk was found to be relatively small in comparison to cathode polarization and ohmic l...