About this Abstract |
| Meeting |
MS&T26: Materials Science & Technology
|
| Symposium
|
Ceramics for Clean Hydrogen
|
| Presentation Title |
B-Site Doping and Nanoparticle Exsolution in SFM Electrodes for SOEC Co-Electrolysis Applications |
| Author(s) |
Mohammadali Emadi, Eric Croiset, XiaoYu Wu |
| On-Site Speaker (Planned) |
Eric Croiset |
| Abstract Scope |
Solid Oxide Electrolysis Cell (SOEC) co-electrolysis of CO2 and H2O provides an efficient route for syngas production with tunable H2/CO ratios. In this work, B-site engineered Sr2Fe1.5Mo0.5O6 (SFM) electrodes were developed on LSGM electrolytes to investigate the effect of exsolved metal nanoparticles on syngas selectivity during co-electrolysis. Ni- and Cu-doped SFM compositions were synthesized and evaluated under reducing SOEC operating conditions. Structural and microstructural analyses confirmed the in situ exsolution of anchored metallic nanoparticles on the electrode surface. This presentation highlights the effects of Ni- and Cu- doped SFM electrodes on the promotion of either hydrogen evolution and/or CO2 activation toward CO formation. Electrochemical measurements demonstrated improved catalytic activity and stability for both exsolved systems compared with pristine SFM. The results highlight exsolution engineering as an effective strategy for tailoring syngas composition in SOEC co-electrolysis applications. |
