Surface Modification of Yttria-Stabilized Zirconia Electrolyte by Atomic Layer Deposition
By Chao, Cheng-Chieh; Kim, Young Beom & Prinz, Fritz B.
Published in Nano Letters
2009
Abstract
Yttria-stabilized zirconia (YSZ) electrolyte membranes were surface modified by adding a 1 nm thin, high-yttria concentration YSZ film with the help of atomic layer deposition. The addition of the 1 nm film led to an increase of the maximum power density of a low-temperature solid oxide fuel cell (LT-SOFC) by a factor of 1.50 at 400 °C. The enhanced performance can be attributed to an increased oxide ion incorporation rate on the surface of the modified electrolyte.