A study of multilayer tape casting method for anode-supported planar type solid oxide fuel cells (SOFCs)
A study of multilayer tape casting method for anode-supported planar type solid oxide fuel cells (SOFCs)
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DOI：
10.1016/j.jallcom.2006.07.110
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发表时间：
2007-06
影响因子：
6.2
通讯作者：
Zhenrong Wang;J. Qian;J. Cao;Shaorong Wang;T. Wen
中科院分区：
文献类型：
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作者：
Zhenrong Wang;J. Qian;J. Cao;Shaorong Wang;T. Wen
在目前的工作中，我们开发了一种多层流延和共烧结工艺来制造大面积阳极支撑电解质膜，这对于平面型低温固体氧化物燃料电池（SOFC）至关重要。采用镍/氧化钇稳定氧化锆（Ni/YSZ）、镍/氧化钪稳定氧化锆（Ni/ScSZ）金属陶瓷、ScSZ、Ce0.8Gd0.2O1.9（CGO）和La0.6Sr0.4Co0.2Fe0.8O3−δ（LSCF）–CGO作为阳极基底、阳极功能层、电解质、中间层和阴极材料。分别。这些功能层的粉末与有机添加剂一起球磨形成浆料，然后通过多层流延程序将其组装在一起以获得生带。干燥后，将生带在空气中于1400℃共烧结4h，得到大面积阳极支撑电解质膜（厚度～15μm）。为了制备电池，通过丝网印刷方法沉积LSCF-CGO复合阴极并在1100℃下烧结3小时。所获得的单电池在 850°C、H2/O2 作为工作气体时，面积比电阻 (ASR) 为～0.99Ωcm2，最大功率密度达到～0.63Wcm−2。研究了高温烧结过程中ScSZ/CGO界面处形成的(Zr,Ce)O2基固溶体的厚度。结果表明，可以通过多层流延工艺制备具有 CGO 夹层的平面 SOFC 阳极支撑电解质膜，既经济又可行。
In the present work, we have developed a multilayer tape casting and co-sintering process to fabricate large area anode-supported electrolyte film, which is critical for planar type reduced temperature solid oxide fuel cells (SOFCs). Nickel/yttria-stabilized zirconia (Ni/YSZ), nickel/scandia-stabilized zirconia (Ni/ScSZ) cermets, ScSZ, Ce0.8Gd0.2O1.9(CGO), and La0.6Sr0.4Co0.2Fe0.8O3−δ(LSCF)–CGO were used as materials of anode substrate, anode functional layer, electrolyte, interlayer and cathode, respectively. The powders of these functional layers were ball milled with organic additives to form slurries, which were assembled together with the multilayer tape casting procedure to get the green tapes. After dryness, the green tape was co-sintered at 1400°C for 4h in air to get the large area anode-supported electrolyte film (thickness∼15μm). For cells preparation, LSCF–CGO composite cathode was deposited by screen-printing method and sintered at 1100°C for 3h. The area-specific resistance (ASR) of the obtained single cell was found to be ∼0.99Ωcm2at 850°C with H2/O2as the operating gases, and the maximum power density achieved ∼0.63Wcm−2. The thickness of the (Zr,Ce)O2-based solid solution formed at the ScSZ/CGO interface during high temperature sintering was investigated. The results illustrate that fabrication of anode-supported electrolyte film for planar SOFCs with a CGO interlayer is possible by multilayer tape casting procedure, which is both cost-effective and feasible.