Route to High-Performance Micro-solid Oxide Fuel Cells on Metallic Substrates.
Route to High-Performance Micro-solid Oxide Fuel Cells on Metallic Substrates.
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DOI：
10.1021/acsami.0c15368
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发表时间：
2021-01-27
影响因子：
9.5
通讯作者：
MacManus-Driscoll JL
中科院分区：
文献类型：
--
作者：
Wells MP;Lovett AJ;Chalklen T;Baiutti F;Tarancón A;Wang X;Ding J;Wang H;Kar-Narayan S;Acosta M;MacManus-Driscoll JL
基于薄膜的微固体氧化物燃料电池在便携式电力设备中具有很大的应用潜力。然而，基于硅衬底的器件通常涉及在高温下不稳定的薄膜金属电极。基于大块金属衬底的器件克服了这些限制，尽管性能受到在金属上生长最先进外延材料的挑战的阻碍。在这里，我们首次证明了外延阴极材料在金属衬底（不锈钢）上的生长，外延电解质层为1.5 μm (Y2O3)0.15（ZrO2)0.85 (YSZ) + 50 nm CeO2）。我们通过脉冲激光沉积LSCF/MgO垂直排列的纳米复合薄膜，然后选择性蚀刻出MgO，在衬底上制备了（La0.60Sr0.40）0.95Co0.20Fe0.80O3的外延介孔阴极（LSCF）。为了与文献进行有效的比较，阴极也生长在单晶衬底上，确认了最先进的性能，500°C时的面积比电阻为100 Ω cm2，活化能降至0.97 eV。这项工作标志着高性能微固体氧化物燃料电池走向商业化的重要一步。
Micro-solid oxide fuel cells based on thin films have strong potential for use in portable power devices. However, devices based on silicon substrates typically involve thin-film metallic electrodes which are unstable at high temperatures. Devices based on bulk metal substrates overcome these limitations, though performance is hindered by the challenge of growing state-of-the-art epitaxial materials on metals. Here, we demonstrate for the first time the growth of epitaxial cathode materials on metal substrates (stainless steel) commercially supplied with epitaxial electrolyte layers (1.5 μm (Y2O3)0.15(ZrO2)0.85 (YSZ) + 50 nm CeO2). We create epitaxial mesoporous cathodes of (La0.60Sr0.40)0.95Co0.20Fe0.80O3 (LSCF) on the substrate by growing LSCF/MgO vertically aligned nanocomposite films by pulsed laser deposition, followed by selectively etching out the MgO. To enable valid comparison with the literature, the cathodes are also grown on single-crystal substrates, confirming state-of-the-art performance with an area specific resistance of 100 Ω cm2 at 500 °C and activation energy down to 0.97 eV. The work marks an important step toward the commercialization of high-performance micro-solid oxide fuel cells for portable power applications.
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影响因子：
2.7
作者：
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通讯作者：
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