Strain reducing proton conductivity (IMAGE) Kyushu University Caption When yttrium-doped barium zirconate (BZY20) is deposited on an electrode, the atoms near the surface are compressed from their ideal position. This in-plane compressive strain increases the barrier to proton diffusion, thus reducing proton conductivity and performance of solid oxide fuel cells. This decrease in proton conductivity matches reported values of proton conductivities in high-performance proton-conducting ceramics fuel cell. Strategies to overcome this strain will help to improve performance in the future. Credit Yamazaki Lab, Kyushu University Usage Restrictions Only for media and non-commercial use. License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.