/solid-oxides
Staykov Lab
SOFC are promising devices for electrochemical conversion of chemical energy into electricity. Their electrodes are usually made from perovskites (complex oxides of two or more metallic cations) which are characterized with ionic conductivity, electronic conductivity, and surface oxygen exchange. A major reason for the insufficient industrial application of SOFCs is the electrodes’ durability, which suffers from various degradation mechanisms. Thus, it is crucial to elucidate the electrodes’ surface structure and catalytic activity. J. Kilner (Imperial College London) and T. Ishihara (Kyushu University) proved that perovskite surfaces are always terminated with their “A-site” elements. The oxygen reduction reaction (ORR) depends on the type of A-site element (earth alkaline or rare earth). A. Staykov proved that rare earth elements on A-sites possess supreme catalytic activity, owing to partial covalency within the crystal structure. The use of rare earth elements on A-sites of perovskites limits the possible electrode degradation. The joint work (Kilner, Ishihara, Staykov) is awarded with Daiwa-Adrian Prize for Japan-UK collaboration (2016).
Figure: Catalitic activity of surface oxigen vacancies on SrO terminated SrTiO3 surface
Publications in the field of solid oxides
A systematic evaluation of the role of lanthanide elements in functional complex oxides; implications for energy conversion devices
J Wu, K Fujii, M Yashima, A Staykov, T Akbay, T Ishihara, JA Kilner
J. Mater. Chem. A 2018 6, 11819-11829.
Electronic properties and surface reactivity of SrO-terminated SrTiO3 and SrO-terminated iron-doped SrTiO3.
A Staykov, H Tellez, J Druce, J Wu, T Ishihara, J Kilner.
Sci. Tech. Adv. Mater. 2018 19, 221-230.
The stability of titania‐silica interface.
A Staykov, EP Ferreira‐Neto, JMYS Cruz, S Ullah, UP Rodrigues‐Filho.
Intern. J. Quant. Chem. 2018 118 e25495. https://doi.org/10.1002/qua.25495
The interaction of molecular oxygen on LaO terminated surfaces of La2NiO4
T Akbay, A Staykov, J Druce, H Téllez, T Ishihara, JA Kilner.
J. Mater. Chem. A 2016 4, 13113-13124.
Oxygen activation and dissociation on transition metal free Perovskite surfaces.
A Staykov, T Akbay, J Druce, H Téllez, T Ishihara, J Kilner.
Chem. Mater. 2015 27, 8273-8281.
A systematic evaluation of the role of lanthanide elements in functional complex oxides; implications for energy conversion devices
J Wu, K Fujii, M Yashima, A Staykov, T Akbay, T Ishihara, JA Kilner
J. Mater. Chem. A 2018 6, 11819-11829.
Electronic properties and surface reactivity of SrO-terminated SrTiO3 and SrO-terminated iron-doped SrTiO3.
A Staykov, H Tellez, J Druce, J Wu, T Ishihara, J Kilner.
Sci. Tech. Adv. Mater. 2018 19, 221-230.
The stability of titania‐silica interface.
A Staykov, EP Ferreira‐Neto, JMYS Cruz, S Ullah, UP Rodrigues‐Filho.
Intern. J. Quant. Chem. 2018 118 e25495. https://doi.org/10.1002/qua.25495
The interaction of molecular oxygen on LaO terminated surfaces of La2NiO4
T Akbay, A Staykov, J Druce, H Téllez, T Ishihara, JA Kilner.
J. Mater. Chem. A 2016 4, 13113-13124.
Oxygen activation and dissociation on transition metal free Perovskite surfaces.
A Staykov, T Akbay, J Druce, H Téllez, T Ishihara, J Kilner.
Chem. Mater. 2015 27, 8273-8281.