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Surface Modification Allows High Performance for Solid Oxide Fuel Cells Fabricated by a Single‐step Co‐firing Process
Author(s) -
Dai H.,
Ning Y.,
He S.,
Zhang X.,
Guo L.,
Zhao G.
Publication year - 2017
Publication title -
fuel cells
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.485
H-Index - 69
eISSN - 1615-6854
pISSN - 1615-6846
DOI - 10.1002/fuce.201700098
Subject(s) - electrolyte , materials science , surface modification , cathode , oxide , chemical engineering , solid oxide fuel cell , ohmic contact , polarization (electrochemistry) , samarium , electrode , nanotechnology , inorganic chemistry , chemistry , metallurgy , layer (electronics) , engineering
The power output of solid oxide fuel cells using samarium doped ceria electrolyte fabricated by a single‐step co‐firing process is enhanced by using a surface modification strategy. This strategy leads to the cell performance improving from 401 mW cm −2 to 523 mW cm −2 at 700 °C, with an increase of more than 30% been achieved, which is very encouraging considering the large electrolyte thickness (∼500 µm). The cell resistance, including both polarization resistance and the ohmic resistance, decreases dramatically by employing the surface modification method. Those results reveal that the surface modification improves the cathode/electrolyte interfacial contact, which results in a reduced total cell resistance and leads to a better cell performance.