Direct-write microfabrication of single-chamber micro solid oxide fuel cells
Direct-write microfabrication of single-chamber micro solid oxide fuel cells
复制标题
单室微型固体氧化物燃料电池的直写微加工
DOI：
10.1088/0960-1317/18/1/015005
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发表时间：
2007
影响因子：
2.3
通讯作者：
D. Therriault
中科院分区：
文献类型：
--
作者：
M. Kuhn;T. Napporn;M. Meunier;S. Vengallatore;D. Therriault
单室微型固体氧化物燃料电池（SC-µ SOFC）是一种很有前途的便携式发电系统。在这里，我们报告了单面配置的SC-µ SOFC的直写微加工和电化学测试，该配置由电解质基板上的紧密间隔的叉指电极组成。在直写微制造中，粉末状电极材料首先合成为墨水，随后通过微喷嘴挤出到安装在机器人控制平台上的电解质板上。然后烧结微制造的结构以去除油墨的有机成分并获得多孔电极。通过在YSZ电解质上直接写入微细加工氧化镍-氧化钇稳定的氧化锆（NiO-YSZ）阳极和镧锶锰氧化物（LSM）阴极的系统实验，获得了工艺-结构关系。单室µ SOFC是用几百微米大小的叉指电极制造的。当在700 °C的炉温下在燃料-空气混合物（甲烷与氧气的比率Rmix = 2）中测试时，电池表现出800 mV的开路电压和101 mW cm−2的峰值功率密度。使用这些设备的便携式发电的影响进行了讨论。
Single-chamber micro solid oxide fuel cells (SC-µSOFCs) are promising systems for portable power generation. Here we report the direct-write microfabrication and electrochemical testing of SC-µSOFCs in the single-face configuration which consists of closely spaced interdigitated electrodes on an electrolyte substrate. In direct-write microfabrication, powdered electrode materials are first synthesized into inks which are subsequently extruded through a micronozzle onto an electrolyte plate mounted on a robot-controlled platform. The microfabricated structures are then sintered to remove the organic components of the inks and to obtain porous electrodes. Processing–structure relationships were obtained using systematic experimentation for the direct-write microfabrication of nickel oxide–yttria stabilized zirconia (NiO–YSZ) anodes and lanthanum strontium manganite (LSM) cathodes on an YSZ electrolyte. Single-chamber µSOFCs were fabricated with interdigitated electrodes of a few hundred microns in size. When tested in a fuel–air mixture (methane-to-oxygen ratio Rmix = 2) at a furnace temperature of 700 °C, the cells exhibited an open circuit voltage of 800 mV and a peak power density of ∼1 mW cm−2. Implications for the use of these devices for portable power generation are discussed.