105 citations · 593 across the 20 of their papers we have counts for
20 papers
DC Resistance Degradation of SrTiO: The Role of Virtual-Cathode Needles and Oxygen Bubbles
Ana Alvarez, I-Wei Chen
This study of highly accelerated lifetime tests of SrTiO, a model semiconducting oxide, is motivated by the interest in reliable multilayer ceramic capacitors and resistance-sw…
Ultra-uniform Nanocrystalline Materials via Two-Step Sintering
Yanhao Dong, Hongbing Yang, Lin Zhang +6
Nanocrystalline metals and ceramics with <100 nm grain sizes and superior properties (e.g., mechanical strength, hardness, fracture toughness and stored dielectric energy) are of g…
Hole polaron assisted oxygen ion migration in LiMnO
Yanhao Dong, I-Wei Chen, Ju Li
Oxygen ion migration in Li2MnO3 was systematically studied by first-principles calculations. Hole polaron is found effective to lower the migration barrier of oxygen ion.
DC Electrical Degradation of YSZ: Voltage Controlled Electrical Metallization of A Fast Ion Conducting Insulator
Ana Alvarez, Yanhao Dong, I-Wei Chen
DC electrical degradation as a form of dielectric and resistance breakdown is a common phenomenon in thin-film devices including resistance-switching memory. To obtain design data…
Potential jumps at transport bottlenecks cause instability of nominally ionic solid electrolytes in electrochemical cells
Yanhao Dong, Zhichao Zhang, Ana Alvarez +1
Normal operations of electrochemical devices such as solid oxide fuel cells (SOFC), solid oxide electrolyzer cells (SOEC) and lithium ion batteries (LIB) sometimes fail because of…
Inversion of oxygen potential transitions at grain boundaries of SOFC/SOEC electrolytes
Yanhao Dong, I-Wei Chen
Solid oxide fuel/electrolyzer cell (SOFC/SOEC) converts energy between chemical and electrical forms inversely. Yet electrolyte degradation takes place much more severe for SOEC th…