TY - JOUR
T1 - Co-electrolysis of H2O and CO2 on exsolved Ni nanoparticles for efficient syngas generation at controllable H2/CO ratios
AU - Kyriakou, V.
AU - Neagu, D.
AU - Papaioannou, E.I.
AU - Metcalfe, I.S.
AU - van de Sanden, M.C.M.
AU - Tsampas, M.N.
PY - 2019/12/5
Y1 - 2019/12/5
N2 - Syngas (CO+H2) is a key-intermediate for the production of liquid fuels via the Fischer-Tropsch process. An emerging technology for generating syngas is the co-electrolysis of H2O/CO2 in solid oxide cells powered by renewable electricity. An application of this technology, however, is still challenging because the Ni-based cermet fuel electrodes are susceptible to degradation under redox and coking conditions, requiring protective hydrogen atmosphere to maintain stable operation. Perovskite oxides are the most promising alternatives due to their redox stability, extensive range of functionalities and the exsolution concept. The latter allows perovskites to be decorated with uniformly dispersed Ni nanoparticles with unique functionalities that can dramatically enhance the performance. Herein, we demonstrate the advantage of employing a nanoparticle-decorated La0.43Ca0.37Ni0.06Ti0.94O3 (LCT-Ni) perovskite to efficiently generate syngas at adjustable H2/CO ratios and simultaneously avoid the need of a reducing agent, hence decreasing the total cost and complexity of the process.
AB - Syngas (CO+H2) is a key-intermediate for the production of liquid fuels via the Fischer-Tropsch process. An emerging technology for generating syngas is the co-electrolysis of H2O/CO2 in solid oxide cells powered by renewable electricity. An application of this technology, however, is still challenging because the Ni-based cermet fuel electrodes are susceptible to degradation under redox and coking conditions, requiring protective hydrogen atmosphere to maintain stable operation. Perovskite oxides are the most promising alternatives due to their redox stability, extensive range of functionalities and the exsolution concept. The latter allows perovskites to be decorated with uniformly dispersed Ni nanoparticles with unique functionalities that can dramatically enhance the performance. Herein, we demonstrate the advantage of employing a nanoparticle-decorated La0.43Ca0.37Ni0.06Ti0.94O3 (LCT-Ni) perovskite to efficiently generate syngas at adjustable H2/CO ratios and simultaneously avoid the need of a reducing agent, hence decreasing the total cost and complexity of the process.
KW - co-electrolysis
KW - exsolution
KW - Ni/YSZ
KW - perovskite fuel electrode
KW - syngas production
UR - http://www.scopus.com/inward/record.url?scp=85070733499&partnerID=8YFLogxK
U2 - 10.1016/j.apcatb.2019.117950
DO - 10.1016/j.apcatb.2019.117950
M3 - Article
AN - SCOPUS:85070733499
SN - 0926-3373
VL - 258
JO - Applied Catalysis B: Environmental
JF - Applied Catalysis B: Environmental
M1 - 117950
ER -