Ceramic Engineering and Science Proceedings Volume 34 Issue 4 Advances in Solid Oxide Fuel Cells IX A collection of 13 papers from The American Ceramic Societys 37th International Conference on Advanced Ceramics and Composites held in Daytona Beach Florida January 27February 1 2013. This issue includes papers presented in Symposium 3 10th International Symposium on Solid Oxide Fuel Cells Materials Science and Technology.