Low temperature solid oxide fuel cells with hierarchically porous cathode nano-network
Low temperature solid oxide fuel cells with hierarchically porous cathode nano-network
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DOI：
10.1016/j.nanoen.2014.05.010
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发表时间：
2014-09-01
期刊：
影响因子：
17.6
通讯作者：
Chen, Fanglin
中科院分区：
文献类型：
--
作者：
Chen, Yu;Lin, Ye;Chen, Fanglin
固体氧化物燃料电池（SOFC）系统工作温度高，成本低，可靠性差，严重阻碍了其广泛商业化。在本研究中，通过真空浸润和随后的冷冻干燥燃烧制备了具有分层多孔纳米阴极网络的高性能低温sofc （Sm0.5Sr0.5CoO3-Gd0.1Ce0.9O2-delta, SSC-GDC）。冻干铸带制备的直开式GDC阴极骨架和NiO-GDC阳极衬底有利于质量的传递，纳米阴极催化剂促进了电化学反应。该电池具有直开电极和分层多孔阴极网络，在500℃下的最大功率密度为0.65 W cm(-2)，在400℃下使用h -2作为燃料和环境空气作为氧化剂时，稳定性超过500小时。这种简单且经济高效的制造工艺有望显著影响SOFC的可操作性，并加速其商业化。(C) 2014 Elsevier Ltd.版权所有。
Cost and reliability of solid oxide fuel cell (SOFC) system resulting from high operating temperature severely hinders its wide-spread commercialization. In this study, high performance low temperature SOFCs with hierarchically porous nano cathode network (Sm0.5Sr0.5CoO3-Gd0.1Ce0.9O2-delta, SSC-GDC) have been fabricated by vacuum-free infiltration and subsequent freeze-drying combustion. The straight open GDC cathode skeleton and NiO-GDC anode substrate prepared by freeze-drying tape-casting facilitate mass transport while the nano cathode catalyst promotes the electrochemical reactions. The cell with straight open electrodes and hierarchically porous cathode network demonstrates a maximum power density of 0.65 W cm(-2) at 500 degrees C and impressive stability for more than 500 h at 400 degrees C using H-2 as fuel and ambient air as oxidant. The simple and cost-effective fabrication process is expected to significantly impact the SOFC operability and accelerate its commercialization. (C) 2014 Elsevier Ltd. All rights reserved.