Advanced Ru‐Infiltrated Perovskite Oxide Electrodes for Boosting the Performance of Syngas Fueled Solid Oxide Fuel Cell

Abstract

A promising Sr 2 Fe 1.5 Mo 0.5 O 6-δ -Ce 0.8 Sm 0.2 O 1.9 (SFM-SDC) anode material is modified by infiltrating Ru catalytic particles to enhance the electrochemical performance for H 2 /CO electrooxidation. The electrode polarization resistance (R p ), which is considerably affected by the pre-sintering temperature, shows the lowest value of 0.67 Ω cm 2 at 800 °C in 3 % H 2 O humidified hydrogen for bare SFM-SDC electrode calcined at 1050 °C.Furthermore, the R p value is favorably diminished to 0.22 Ω cm 2 after Ru infiltration. Meanwhile, the output power density exhibits a significant increment, proving the excellent electrocatalytic properties of Ru nano-particles. Additionally, the single cell with infiltration presents a good short-term stability even after redox operation.

The emerging Sr2FeMoO6-based electrocatalysts for solid oxide electrochemical cell: synthesis, modulation and applications

“…Wang et al increased the CO 2 RR activity of SF1.5M by impregnating nano-sized Pr 6 O 11 on the surface of the SF1.5M electrode [83] . Zhang et al successfully improved the electrochemical performance of SOEC by constructing a composite heterogeneous interface between alkaline earth metal oxide and SF1.5M electrode through infiltration [84] . It is not difficult to see that the current researches are mainly focused on the impregnation of oxides (e.g., Gd-doped ceria, alkaline-earth metal oxide, and Pr 6 O 11 ) or metals (e.g., Ni and Ru) on the surface of the electrode to form an oxide-oxide/ metal-oxide heterojunction [85][86][87] .…”

Recent Development in Reversible Solid Oxide Fuel Cells: Theory, Integration and Prospective

“…Perovskite oxides are considered a promising class of fuel electrode materials. [52] They exhibit excellent redox stability and, at the same time, demonstrate outstanding catalytic performance. [53] Currently, these materials have primarily evolved through research on oxygen electrodes, focusing mainly on various variants of perovskite oxides, including those based on titanium, iron, and chromium [54][55][56][57][58] .…”

“…Perovskite oxides are considered a promising class of fuel electrode materials [52] . They exhibit excellent redox stability and, at the same time, demonstrate outstanding catalytic performance [53] .…”

Electrochemical evaluation of Sr2Fe1.5Mo0.5O6-δ/Ce0.9Gd0.1O1.95 cathode of SOFCs by EIS and DRT analysis

“…Xu et al [17] comprehensively studied the effect of Ni nanoparticles infiltration into the SFM fuel electrode. Yu et al [18] investigated the SFM-SDC fuel electrode and reported that introduction of Ru to the electrode backbone, improved the electro-catalytic properties of the electrode and reduced the polarization resistance from 0.67 to 0.22 Ω.cm 2 at 3 % H 2 O humidified hydrogen. Also, Liu et al [19] illustrated the effect of Ru impregnation on the SFM-SDC performance toward steam electrolysis with the assistance of partial oxidation of methane (POM).…”