Electrochemical property of multi-layer anode supported solid oxide fuel cell fabricated through sequential tape-casting and co-firing
来源期刊：JOURNAL OF MATERIALS SCIENCE TECHNOLOG2019年第4期
论文作者：Xiaoyang Chen Weijie Ni Tenglong Zhu Qin Zhong Minfang Han
文章页码：695 - 701
摘 要：In this work, a multi-layer anode supported solid oxide fuel cell（SOFC） is designed and successfully prepared through sequential tape casting and co-firing. The single cell is consisted of NiO-3 YSZ（3 YSZ: 3 mol.% yttria doped zirconia） anode support, NiO-8 YSZ（8 YSZ: 8 mol.% yttria stabilized zirconia） anode functional layer, dense 8 YSZ electrolyte layer, and porous 3 YSZ cathode scaffold layer with infiltrated La0.6Sr0.4Co0.2Fe0.8O3-δ cathode. The clear interfaces and good contacts between each layer, without element inter-diffusion being observed, suggest that this sequential tape casting and co-firing is a feasible and successful route for anode supported single cell fabrication. This cell exhibits remarkable high open circuit voltage of 1.097 V at 800?C under room temperature humidified hydrogen, with highly dense and gastight electrolyte layer. It provides a power density of 360 mW/cm2 under operation voltage of0.75 V at 800?C and a stable operation of ～110 h at 750?C under current density of-300 mA/cm2. Furthermore, this cell also presents encouraging electrochemical responses under various anode hydrogen partial pressures and maintains high power output at low fuel concentrations.
Xiaoyang Chen1，Weijie Ni1，Tenglong Zhu1，Qin Zhong1，Minfang Han3
1. School of Chemical Engineering,Nanjing University of Science and Technology3. State Key Laboratory of Power Systems,Department of Energy and Power Engineering,Tsinghua University
摘 要：In this work, a multi-layer anode supported solid oxide fuel cell（SOFC） is designed and successfully prepared through sequential tape casting and co-firing. The single cell is consisted of NiO-3 YSZ（3 YSZ: 3 mol.% yttria doped zirconia） anode support, NiO-8 YSZ（8 YSZ: 8 mol.% yttria stabilized zirconia） anode functional layer, dense 8 YSZ electrolyte layer, and porous 3 YSZ cathode scaffold layer with infiltrated La0.6Sr0.4Co0.2Fe0.8O3-δ cathode. The clear interfaces and good contacts between each layer, without element inter-diffusion being observed, suggest that this sequential tape casting and co-firing is a feasible and successful route for anode supported single cell fabrication. This cell exhibits remarkable high open circuit voltage of 1.097 V at 800?C under room temperature humidified hydrogen, with highly dense and gastight electrolyte layer. It provides a power density of 360 mW/cm2 under operation voltage of0.75 V at 800?C and a stable operation of ～110 h at 750?C under current density of-300 mA/cm2. Furthermore, this cell also presents encouraging electrochemical responses under various anode hydrogen partial pressures and maintains high power output at low fuel concentrations.
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