Abstract
This work presents a microporous silver cathode membrane reinforced with infiltration of samarium-doped ceria (SDC). The ion-conducting SDC effectively confines the surface of a porous silver membrane to maintain microporous structure and prevents the electrode agglomeration. SDC precursor solution is fired together with silver membrane at 700 °C for 2 h and formed as a nanocrystalline SDC on the silver pore surface. The SDC-infiltrated microporous silver membrane shows superior resistance to agglomeration without noticeable change in microstructures even at 900 °C for 12 h, which makes it promising for the application of solid oxide fuel cells as a cathode support.
Highlights
The use of catalytically active metals can likely be an alternative to oxide electrodes in solid oxide fuel cells (SOFCs) operating at low temperatures (
We demonstrated that a samarium-doped ceria (SDC)-infiltrated microporous silver membrane can be used as an efficient cathode support which is sustainable at a high temperature up to 900 ◦ C without significant thermal agglomeration
The crystallinity of the SDC fired at 110 ◦ C and fired at 700 ◦ C were identified by X-ray diffractometer (XRD, PANalytical Empyrean) with Cu Kα radiation source in the 2θ range from 20◦ to 80◦
Summary
The use of catalytically active metals can likely be an alternative to oxide electrodes in solid oxide fuel cells (SOFCs) operating at low temperatures (
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