@article{sun_nangeelil_cai_lassell_2022, title={Investigation of heavy metals in cottonseeds with instrumental neutron activation analysis}, ISSN={["1588-2780"]}, DOI={10.1007/s10967-022-08461-4}, journal={JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY}, author={Sun, Zaijing and Nangeelil, Krishnakumar Divakar and Cai, Qingseng and Lassell, Scott}, year={2022}, month={Aug} }
 @article{benson_harp_xie_yao_tolman_wright_king_hawari_cai_2021, title={Out-of-pile and postirradiated examination of lanthanide and lanthanide-palladium interactions for metallic fuel}, volume={544}, ISSN={["1873-4820"]}, DOI={10.1016/j.jnucmat.2020.152727}, abstractNote={Palladium is being investigated as a fuel additive to bind with and potentially immobilize lanthanide fission products. A primary cause of fuel-cladding chemical interaction (FCCI) is the lanthanide fission products migrating to the fuel periphery and interacting with the cladding. This interaction will lead to wastage of the cladding and eventually to a cladding breach. Palladium has previously been identified as a promising additive used to prevent or decrease FCCI by reacting with the lanthanide fission products. In the current study, an alloy cast from the four highest abundant lanthanides found in irradiated metallic fuel, Nd, Ce, Pr, and La, with and without Pd, has been characterized using neutron diffraction, scanning electron microscopy, and electron probe microanalysis. In the lanthanide-Pd intermetallic compounds, all of the constituent compounds, i.e. Nd-Pd, Ce-Pd, La-Pd and Pr-Pd are known. There is very good agreement, both structurally and compositionally, between the out-of-pile lanthanide alloy and lanthanide fission products characterized in irradiated fuels. In both cases, the lanthanide elements form a solid solution in a hexagonal crystal structure. The out-of-pile lanthanide alloy follows Vegard's Law, with the measured and calculated (weighted average of constituents) lattice parameters being within 1% for both the a and c parameters. Pd bonds with the lanthanides (Ln) forming the phases LnPd and Ln7Pd3. The results indicate the properties of lanthanide compounds in irradiated metallic fuel can be reliably simulated in out-of-pile experiments.}, journal={JOURNAL OF NUCLEAR MATERIALS}, author={Benson, Michael T. and Harp, Jason M. and Xie, Yi and Yao, Tiankai and Tolman, Kevin R. and Wright, Karen E. and King, James A. and Hawari, Ayman I. and Cai, Qingsheng}, year={2021}, month={Feb} }
 @article{dogdibegovic_cai_alabri_guan_zhou_2017, title={Activity and Stability of (Pr1-xNdx)(2)NiO4 as Cathodes for Solid Oxide Fuel Cells III. Crystal Structure, Electrical Properties, and Microstructural Analysis}, volume={164}, ISSN={["1945-7111"]}, DOI={10.1149/2.0581702jes}, abstractNote={This study is to complement an early article (Dogdibegovic et al., J. Electrochem. Soc., 163(13), F1344 (2016)) on the electrochemical activity and performance stability of (Pr1-xNdx)2NiO4+δ (PNNO) electrodes. Here, we report the crystal structure, electrical properties, and microstructures of PNNO series as the cathodes for solid oxide fuel cells. Rietveld refinements on powders (x = 0, 0.25, 0.50, 0.75, and 1) show that the unit cell volume decreases with an increase in x, primarily due to a decrease in the c lattice parameter. Larger cell volume (∼1.50%) and higher total electrical conduction (40%) in Pr2NiO4+δ are in favor with its mixed conducting properties during operation, but Pr2NiO4+δ cathode exhibits a severe phase evolution. Substitution of Pr with Nd shows the suppression of phase evolution in both thermally annealed powders and electrodes. An increase in Nd content leads to a full preservation of the parent phase in both (Pr0.25Nd0.75)2NiO4+δ and Nd2NiO4 after 2,500 hour annealing at elevated temperatures. Reaction with GDC buffer layer was also suppressed with the presence of Nd, which was shown by a reduction of Pr and Ni elemental diffusion into GDC bulk. STEM analysis confirms multiple phases present in an operated Pr2NiO4+δ electrode, while suppressed phase transition was observed in electrodes with high Nd content.}, number={2}, journal={JOURNAL OF THE ELECTROCHEMICAL SOCIETY}, author={Dogdibegovic, Emir and Cai, Qingsheng and Alabri, Nawf S. and Guan, Wanbing and Zhou, Xiao-Dong}, year={2017}, pages={F99–F106} }
 @article{dogdibegovic_yan_cai_jung_xing_liu_goettler_zhou_2017, title={Activity and Stability of (Pr1-xNdx)(2)NiO4+delta as Cathodes for Oxide Fuel Cells: Part VI. The Role of Cu Dopant on the Structure and Electrochemical Properties}, volume={164}, ISSN={["1945-7111"]}, DOI={10.1149/2.0021710jes}, abstractNote={Phase instability in praseodymium nickelates is a major concern for the long-term operations of solid oxide fuel cells since it may lead to the performance degradation. In this work, praseodymium nickelates (ex. Pr 2 NiO 4 + δ ) have been stabilized via substitution on both Pr- and Ni-sites. Systematic studies over a wide range of compositions were conducted via long-term thermal annealing studies (T ≤ 870 ◦ C) and electrochemical tests in full cells. Proposed (Pr 0.50 Nd 0.50 ) 2 Ni 1-y Cu y O 4 + δ compositions ( y = 0.05, 0.10, 0.20, and 0.30) showed the most promising results and serve as a comprehensive extension to our previous studies in this series of papers. A stable long-term performance was obtained for temperatures up to 790 ◦ C for 500 hours at 0.80 V with a minimal tradeoff between the activity (power density of 0.8–1.0 W cm − 2 at 850 ◦ C) and performance stability. A preserved parent phase and suppressed}, number={10}, journal={JOURNAL OF THE ELECTROCHEMICAL SOCIETY}, author={Dogdibegovic, Emir and Yan, Jingbo and Cai, Qinsheng and Jung, Hwa Young and Xing, Zhengliang and Liu, Zhien and Goettler, Richard W. and Zhou, Xiao-Dong}, year={2017}, pages={F3131–F3139} }
 @article{sun_martin_cai_lassell_2017, title={Instrumental neutron activation analysis (INAA) of Nok sculptures in I. P. Stanback Museum}, volume={313}, ISSN={["1588-2780"]}, DOI={10.1007/s10967-017-5297-8}, number={1}, journal={JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY}, author={Sun, Z. J. and Martin, F. and Cai, Q. S. and Lassell, S.}, year={2017}, month={Jul}, pages={85–92} }
 @article{dogdibegovic_cai_james_yelon_anderson_yang_zhou_2016, title={Coupling between magnetic exchange and charge activation in Cu-Doped LaFeO3}, volume={99}, DOI={10.1111/jace.14061}, abstractNote={Material research on perovskite‐type oxides (ABO3) has been driven by the recognition of their unique properties primarily attributed to the presence of oxygen octahedron (BO6). Since 2003, the discovery of strong coupling in TbMnO3 and BiFeO3 has stimulated new interests in understanding the relationship between magnetic and electric properties in perovskites. In this article, we report our recent work on the magnetic superexchange interaction and charge formation in copper‐doped LaFeO3 using high‐temperature neutron diffraction and thermoelectric measurements. In situ neutron diffraction measurements show a loss of antiferromagnetic ordering above 450°C. With an increase in Cu content, the (Fe, Cu)‐O bond length decreases and the (Fe, Cu)–O–(Fe, Cu) bond angle increases, which leads to an enhancement of the Fe–O–Fe superexchange interaction. Thermoelectric and electrical measurements show that the formation of electron holes in Cu‐doped LaFeO3 is a thermally activated process with two distinct regions with a transition temperature near 450°C, in congruence with the magnetic measurements. Our work show that Cu is in 3+ state in La(Fe,Cu)O3 at room temperature, resulting in the maximum superexchange interaction between Fe3+ ions.}, number={6}, journal={Journal of the American Ceramic Society}, author={Dogdibegovic, E. and Cai, Q. S. and James, W. J. and Yelon, W. B. and Anderson, H. U. and Yang, J. B. and Zhou, X. D.}, year={2016}, pages={2035–2039} }