Ceria (CeO$_{2}$) co-doping has been suggested as a means to achieve ionic conductivities that are significantly higher than those in singly-doped systems. Rekindled interest in this topic over the last decade has given rise to claims of much improved performance. The present study makes use of computer simulations to investigate the bulk ionic conductivity of Rare Earth (RE) doped ceria, where RE = Sc, Gd, Sm, Nd and La. The results from the singly doped systems are compared to those from ceria co-doped with Nd/Sm and Sc/La. The pattern that emerges from the conductivity data is consistent with the dominance of local lattice strains from individual defects, rather than the synergistic co-doping effect reported recently and, as a result no enhancement in the conductivity of co-doped samples is observed.
Synergistic Effects of Phosphorus Doping and Oxygen Vacancies on Formaldehyde Oxidation over CeO$_2$(111): A First Principles Investigation
Université de Lorraine（洛林大学）；CNRS（法国国家科学研究中心）；LEMTA（材料力学与转化实验室）；Université de Monastir（莫纳斯特尔大学）；Faculté des Sciences de Monastir（莫纳斯特尔理学院）；Laboratoire de la matière condensée et nanosciences LR11ES40（凝聚态物质与纳米科学实验室 LR11ES40）；Laboratoire Lorrain de Chimie Moléculaire（洛林分子化学实验室）；Université Lyon 1（里昂第一大学）；IRCELYON（催化、材料和表面研究所）；UMR 5256（联合研究单位 5256）
Synergistic doping and stabilization of magnetically tunable LnTi$_3$(Sb,Sn)$_4$ (Ln:Ce--Gd) kagome metals
Oak Ridge National Laboratory（橡树岭国家实验室）；Norfolk State University（诺福克州立大学）；University of Central Florida（中佛罗里达大学）；Gdansk University of Technology（格但斯克理工大学）
Synergistic doping of the grain interior and grain boundary alters deformation mechanisms and enables extreme strength in nanocrystalline Ni-Cr-Y alloys
University of California, Irvine（加州大学尔湾分校）；Stony Brook University（石溪大学）；Oak Ridge National Laboratory（橡树岭国家实验室）；Johns Hopkins University（约翰斯·霍普金斯大学）
N-doped graphitic carbon materials hybridized with transition metals (compounds) for hydrogen evolution reaction: Understanding the synergistic effect from atomistic level
Shanghai Jiao Tong University（上海交通大学）；Institute of High Energy Physics, Chinese Academy of Sciences（中国科学院高能物理研究所）；Spallation Neutron Source Science Center（散裂中子源科学中心）；Guangdong Provincial Key Laboratory of Extreme Conditions（广东省极端条件重点实验室）；Great Bay University（大湾区大学）；Shanghai University（上海大学）；National Synchrotron Radiation Research Center（国家同步辐射研究中心）；China Jiliang University（中国计量大学）；Jilin University（吉林大学）；Shanghai Institute of Ceramics, Chinese Academy of Sciences（中国科学院上海陶瓷研究所）
