Xiaofei Pu
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View article: Heterogeneity of the Dominant Causes of Performance Loss in End‐of‐Life Cathodes and Their Consequences for Direct Recycling
Heterogeneity of the Dominant Causes of Performance Loss in End‐of‐Life Cathodes and Their Consequences for Direct Recycling Open
Recycling Li‐ion batteries from electric vehicles is critical for reducing costs and supporting the development of a domestic battery supply chain. Direct recycling of cathodes, like LiNi x Mn y Co z O 2 (NMC), is attractive due to its low…
View article: Unveiling and mapping polymorphs in fluorite Y <sub>2</sub> TiO <sub>5</sub> using 4D‐STEM and unsupervised machine learning
Unveiling and mapping polymorphs in fluorite Y <sub>2</sub> TiO <sub>5</sub> using 4D‐STEM and unsupervised machine learning Open
Y 2 TiO 5 belongs to the Ln 2 TiO 5 (Ln = lanthanide or Y) family of ceramic materials and exhibits a range of desirable material properties such as radiation tolerance, frustrated magnetism, and large dielectric constant. However, underst…
View article: Sirius Irradiation Experiments and Post-Irradiation Examinations for Nuclear Thermal Propulsion
Sirius Irradiation Experiments and Post-Irradiation Examinations for Nuclear Thermal Propulsion Open
Nuclear Thermal Propulsion (NTP) systems hold promise in reducing transit times for exploration of the solar system by both crewed and uncrewed missions. NTP systems currently under investigation include a once-through high temperature gas…
View article: Milestone 1.2.15: Feasibility of In Situ Accelerated Aluminum Coupon Radiolysis by Synchrotron X-Rays
Milestone 1.2.15: Feasibility of In Situ Accelerated Aluminum Coupon Radiolysis by Synchrotron X-Rays Open
Extended dry storage of aluminum-clad spent nuclear fuel (ASNF) requires an assessment of the radiolytic generation of molecular hydrogen gas (H2) from the ASNF’s corrosion layers. H2 accumulation can potentially lead to storage canister e…
View article: Milestone 1.2.14: Surface Characterization of Irradiated Surrogate Non-Native Corrosion Plumes on Aluminum 6061-T6 Specimens
Milestone 1.2.14: Surface Characterization of Irradiated Surrogate Non-Native Corrosion Plumes on Aluminum 6061-T6 Specimens Open
The United States Department of Energy is seeking to evaluate the feasibility of extended dry storage of aluminum-clad spent nuclear fuel (ASNF) in helium-backfilled cannisters. A significant research effort has been devoted to determining…
View article: Designing Nuclear Fuels with a Multi-Principal Element Alloying Approach
Designing Nuclear Fuels with a Multi-Principal Element Alloying Approach Open
Previous research has shown that multi-principal element alloys (MPEAs) using chromium, molybdenum, niobium, tantalum, titanium, vanadium, and zirconium can form stable body-centered-cubic (BCC) structures across a large temperature region…
View article: Application of an Improved Olivine-Melt Thermometer/Hygrometer to the Colima Cone Basanites and Minettes of Western Mexico: Implications for the Mantle Source of Unusually High-MgO Melts
Application of an Improved Olivine-Melt Thermometer/Hygrometer to the Colima Cone Basanites and Minettes of Western Mexico: Implications for the Mantle Source of Unusually High-MgO Melts Open
A collection of quaternary, high-MgO (≤13.4 wt%) basanite and minette cinder and lava cones, with an enhanced arc geochemical signature, are located along the northern margin of the N–S Colima rift in western Mexico. The Colima rift overli…
View article: Low-Power Nuclear Heating Tests of UN Fuel Particles in Hydrogen Environment for Nuclear Thermal Propulsion
Low-Power Nuclear Heating Tests of UN Fuel Particles in Hydrogen Environment for Nuclear Thermal Propulsion Open
Recently, there has been a reemergence of interest within the space-exploration community regarding nuclear thermal propulsion (NTP) for interplanetary travel. NTP, as conceptualized, is a compact propulsion source, is relatively light bec…
View article: Formation and characterization of hydride rim structures in Zircaloy-4 nuclear fuel cladding tubes
Formation and characterization of hydride rim structures in Zircaloy-4 nuclear fuel cladding tubes Open
View article: Post-irradiation examination of the Sirius-1 nuclear thermal propulsion fuel test
Post-irradiation examination of the Sirius-1 nuclear thermal propulsion fuel test Open
View article: Characterization of micro-burnup treat irradiated U-22.5 at.% Zr and U-52.8 at.% Zr foils by transmission electron microscopy and X-ray diffraction
Characterization of micro-burnup treat irradiated U-22.5 at.% Zr and U-52.8 at.% Zr foils by transmission electron microscopy and X-ray diffraction Open
View article: Effects of elevated temperature exposure on the residual stress state and microstructure of PVD Cr coatings on SiC investigated via in situ X-ray diffraction and transmission electron microscopy
Effects of elevated temperature exposure on the residual stress state and microstructure of PVD Cr coatings on SiC investigated via in situ X-ray diffraction and transmission electron microscopy Open
View article: Irradiation Effects on Stability of δ-UZr2 phase in U-50 wt% Zr Alloy
Irradiation Effects on Stability of δ-UZr2 phase in U-50 wt% Zr Alloy Open
View article: Radiolytic Gas Production from Aluminum Coupons (Alloy 1100 and 6061) in Helium Environments—Assessing the Extended Storage of Aluminum Clad Spent Nuclear Fuel
Radiolytic Gas Production from Aluminum Coupons (Alloy 1100 and 6061) in Helium Environments—Assessing the Extended Storage of Aluminum Clad Spent Nuclear Fuel Open
Corrosion of aluminium alloy clad nuclear fuel, during reactor operation and under subsequent wet storage conditions, promotes the formation of aluminium hydroxide and oxyhydroxide layers. These hydrated mineral phases and the chemisorbed …
View article: Advanced Characterization capability at INL/MFC
Advanced Characterization capability at INL/MFC Open
I am invited to give a 5-minute one slide presentation on the characterization capability of the Advanced Characterization group (U500) at the Mountain State Society of Electron Microscopy meeting on June 30th. I will only have bullet poin…
View article: Milestone 1.2.9: Radiolytic Gas Generation Measurements from Helium Backfilled Samples of AA1100 and AA6061 Coupons
Milestone 1.2.9: Radiolytic Gas Generation Measurements from Helium Backfilled Samples of AA1100 and AA6061 Coupons Open
Nearly 18 metric tons of aluminum-clad spent nuclear fuel (ASNF) is safely managed by the U.S. Department of Energy (DOE). These assemblies are currently in interim storage, with the intention of extended storage (>50 years) until final di…
View article: Milestone 1.2.10: Steady-state H<sub>2</sub> “roll over” point data for aluminum alloys 1100 and 6061
Milestone 1.2.10: Steady-state H<sub>2</sub> “roll over” point data for aluminum alloys 1100 and 6061 Open
Extended (> 50 years) dry storage is being evaluated by the U.S. Department of Energy (DOE) for the disposition of ~ 18 metric tons of aluminum-clad spent nuclear fuel (ASNF). Transition of the current ASNF inventory into dry storage—using…
View article: Phase Stability of Yttrium Titanium Oxide
Phase Stability of Yttrium Titanium Oxide Open
This proposed study aims at elevating Idaho National Laboratory (INL)’s portfolio in nuclear material research on two major fronts: 1) expanding INL’s material characterization capabilities to provide holistic microstructural and microchem…
View article: Constraints on Early Paleozoic Deep‐Ocean Oxygen Concentrations From the Iron Geochemistry of the Bay of Islands Ophiolite
Constraints on Early Paleozoic Deep‐Ocean Oxygen Concentrations From the Iron Geochemistry of the Bay of Islands Ophiolite Open
The deep ocean is generally considered to have changed from anoxic in the Precambrian to oxygenated by the Late Paleozoic (∼420–400 Ma) due to changes in atmospheric oxygen concentrations. When the transition occurred, that is, in the Earl…
View article: Synthesis and characterization of uranium trichloride in alkali-metal chloride media
Synthesis and characterization of uranium trichloride in alkali-metal chloride media Open
View article: Impacts of annealing treatment on the microstructure of U-Mo monolithic fuel plates
Impacts of annealing treatment on the microstructure of U-Mo monolithic fuel plates Open
View article: Supplementary Data Tables for Stolper et al. (2022) Constraints on Early Paleozoic deep-ocean oxygen concentrations from the iron geochemistry of the Bay of Islands ophiolite in G-Cubed
Supplementary Data Tables for Stolper et al. (2022) Constraints on Early Paleozoic deep-ocean oxygen concentrations from the iron geochemistry of the Bay of Islands ophiolite in G-Cubed Open
Supplementary data tables for Stolper et al. (2022) associated with the paper entitled "Constraints on Early Paleozoic deep-ocean oxygen concentrations from the iron geochemistry of the Bay of Islands ophiolite" published in G-Cubed
View article: Supplementary Data Tables for Stolper et al. (2022) Constraints on Early Paleozoic deep-ocean oxygen concentrations from the iron geochemistry of the Bay of Islands ophiolite in G-Cubed
Supplementary Data Tables for Stolper et al. (2022) Constraints on Early Paleozoic deep-ocean oxygen concentrations from the iron geochemistry of the Bay of Islands ophiolite in G-Cubed Open
Supplementary data tables for Stolper et al. (2022) associated with the paper entitled "Constraints on Early Paleozoic deep-ocean oxygen concentrations from the iron geochemistry of the Bay of Islands ophiolite" published in G-Cubed
View article: Post-transient examination of performance of uranium silicide fuel and silicon-carbide composite cladding under reactivity-initiated accident conditions
Post-transient examination of performance of uranium silicide fuel and silicon-carbide composite cladding under reactivity-initiated accident conditions Open
View article: X-ray diffraction technique
X-ray diffraction technique Open
This is a guest lecture for University of Idaho graduate-level course Chemical and Materials Analysis. I will be talking about the fundamentals of X-ray Diffraction technique and some examples for its application in material science resear…
View article: New Constraints on Temperature, Oxygen Fugacity and H2O of Subduction Zone Basalts Based on Olivine-Melt Equilibrium
New Constraints on Temperature, Oxygen Fugacity and H2O of Subduction Zone Basalts Based on Olivine-Melt Equilibrium Open
Erupted basalts are windows into the deep Earth. This dissertation provides evidence that mantle-derived basalts grow their phenocrysts during rapid ascent to the surface, and that the most Mg-rich olivine in erupted samples approximates t…
View article: A comparison of olivine-melt thermometers based on<i>D</i><sub>Mg</sub>and<i>D</i><sub>Ni</sub>: The effects of melt composition, temperature, and pressure with applications to MORBs and hydrous arc basalts
A comparison of olivine-melt thermometers based on<i>D</i><sub>Mg</sub>and<i>D</i><sub>Ni</sub>: The effects of melt composition, temperature, and pressure with applications to MORBs and hydrous arc basalts Open
A new olivine-melt thermometer based on the partitioning of Ni ( DNiOl/liq ), with a form similar to the Beattie (1993)DMgOl/liq thermometer, is presented in this study. It is calibrated on a data set of 123 olivine-melt equilibrium experi…