Center for Advanced Materials, University of Houston, Houston, TX 77204-5004, USA ; Department of Physics, University of Houston, Houston, TX 77204-5005, USA.
Institute of Physics and Technology, Almaty 050032, Kazakhstan.
Nanoscale Res Lett. 2014 Jun 9;9(1):286. doi: 10.1186/1556-276X-9-286. eCollection 2014.
Fabrication of microporous structures for the anode of a thin film solid oxide fuel cell (SOFC(s)) using controlled etching process has led us to increased power density and increased cell robustness. Micropores were etched in the nickel anode by both wet and electrochemical etching processes. The samples etched electrochemically showed incomplete etching of the nickel leaving linked nickel islands inside the pores. Samples which were wet- etched showed clean pores with no nickel island residues. Moreover, the sample with linked nickel islands in the anode pores showed higher output power density as compared to the sample with clean pores. This enhancement is related to the enlargement of the surface of contact between the fuel-anode-electrolyte (the triple-phase boundary).
采用控制刻蚀工艺在薄膜固体氧化物燃料电池（SOFC）阳极中制造微孔结构，提高了功率密度和电池的稳定性。通过湿刻蚀和电化学刻蚀两种方法在镍阳极中刻蚀微孔。电化学刻蚀的样品显示镍的刻蚀不完全，在孔内留下了连接的镍岛。经湿刻蚀的样品显示出干净的无镍岛残留的孔。此外，与具有干净孔的样品相比，在阳极孔中具有连接镍岛的样品显示出更高的输出功率密度。这种增强与燃料-阳极-电解质（三相界面）之间接触面积的增大有关。
