QuantumLeap X-ray Absorption Spectroscopy Results Gallery
Fluorescence EXAFS of Co in NMC Samples
Fluorescence geometry EXAFS of Co in NMC Samples. Co (~3-5wt%) was low in the NMC battery samples, which were Ni-dominant. Analysis of the EXAFS shows that there are slightly longer bond lengths in the charged sample. Further, the XANES region shows that the Co in the discharged sample is reduced. Collected on QuantumLeap-H2000 using Ge-311 Johansson crystal.
Fluorescence XAS of 1wt% Pt
1wt% Pt in a Pt/W catalyst analyzed using fluorescence geometry XAS, enabled by QuantumLeap-H2000 using a Si440 Johansson crystal.
Zirconium foil
K-edge of Zirconium foil at its absorption K-edge of ~18 keV. QuantumLeap H2000 is uniquely capable of K edges of high Z elements (up to 25 keV).
5pct-Co
5pct-Co-analysis
Fluorescence XAS of 0.5 to 2wt% Pd
Fluorescence geometry XAS of 0.5 to 2wt% Pd in Pd catalysts, prepared under varying conditions. Acquired using QuantumLeap-H2000 and Si(311) crystal.
Fe EXAFS
Iron EXAFS spectra - agreement between QuantumLeap-V210 and synchrotron spectra
NH4VO3 Metavandate
NH4VO3 (metavandate) Sample at different spots on the sample showing repeatability of the result. A pure vanadium foil is shown in comparison. Courtesy of Dr. Ryu, KICET (Korean Institute of Ceramic Engineering & Technology)
Mn2O3 fingerprinting
Rapid fingerprinting of Mn2O3. Courtesy of Dr. Ryu, KICET (Korean Institute of Ceramic Engineering & Technology)
Ni Foil to high K Space
Nickel foil reference taken to demonstrate high SNR to high k-space on QuantumLeap
Pre-edge peaks in Rutile
High energy resolution of QuantumLeap used to resolve three pre-edge peaks of Rutile samples.
NMC K-edges XANES
Mn oxidation states in NMC batteries, compared with standards of Mn and MnO2.
Mn in Ni-dominant NMC Battery Sample
Mn edge acquired in fluorescence geometry XAS on QuantumLeap H2000. The low concentration of Mn (2%) and the high concentration of Ni prevented these two NMC samples from being successfully imaged standard transmission mode XAS. Acquired using Ge-311 cylindrically curved Johansson crystal. Edge shows shift in the discharged versus charged samples.
Fluorescence XAS of 0.5wt% W
Fluorescence mode XAS of 0.5wt% W in a Pt/W catalyst. L3 analyzed using QuantumLeap-H2000 and a Si(440) cylindrically curved Johansson crystal.
Fluorescence XAS of 0.5wt% Pt
Fluorescence XAS of 0.5wt% Pt in a Pt/Sn catalyst on an Al2O3 carrier. Pt L3 edge analyzed with Si(440) cylindrically curved Johansson crystal.
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