Jump to main content
Jump to site search

Issue 18, 2014
Previous Article Next Article

Importance of oxygen spillover for fuel oxidation on Ni/YSZ anodes in solid oxide fuel cells

Author affiliations

Abstract

Using first principles simulations and the Monte Carlo method, the optimal structure of the triple-phase boundaries (TPB) of the Ni/Yttria-Stabilized Zirconia (YSZ) anode in solid oxide fuel cells (SOFCs) is determined. Based on the new TPB microstructures we reveal different reaction pathways for H2 and CO oxidation. In contrast to what was believed in previous theoretical studies, we find that the O spillover from YSZ to Ni plays a vital role in electrochemical reactions. The H2 oxidation reaction can proceed very rapidly, by means of both the H and O spillovers, whereas the CO oxidation can only proceed through the O spillover pathway. Further understanding of the roles of defects and dopants allows us to explain puzzling experimental observations and to predict ways to improve the catalytic performance of SOFCs.

Graphical abstract: Importance of oxygen spillover for fuel oxidation on Ni/YSZ anodes in solid oxide fuel cells

Back to tab navigation

Supplementary files

Publication details

The article was received on 02 Dec 2013, accepted on 06 Feb 2014 and first published on 07 Feb 2014


Article type: Paper
DOI: 10.1039/C3CP55076A
Phys. Chem. Chem. Phys., 2014,16, 8536-8540

  •   Request permissions

    Importance of oxygen spillover for fuel oxidation on Ni/YSZ anodes in solid oxide fuel cells

    Z. Fu, M. Wang, P. Zuo, Z. Yang and R. Wu, Phys. Chem. Chem. Phys., 2014, 16, 8536
    DOI: 10.1039/C3CP55076A

Search articles by author

Spotlight

Advertisements