Investigation of battery materials by operando neutron diffraction
We propose to use operando neutron diffraction to obtain details about the Li-sublattice in the Li-ion cathode material Li3V2(PO4)3. We have studied the material with operando synchrotron X-ray diffraction where we discovered that the material behaves differently than what has previously been discovered by ex-situ diffraction. The phase evolution of the material is highly dependent on the number of Li-ions extracted during charging of the material due to ordering of the Li-ions. Information about the Li-sublattice is very difficult to obtain by X-ray diffraction, however, due to the very low scattering strength of lithium. Neutron diffraction is ideal in this regard, and is expected to yield valuable information about the Li-sublattice, the nature of which seems to dictate the phase evolution of the material. Due to our experience with operando X-ray diffraction, we wish to also use operando neutron diffraction to investigate the material under realistic conditions.
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SOERENSEN Daniel Risskov; Andreas Drejer; Thomas C. Hansen and SENYSHYN Anatoliy. (2019). Investigation of battery materials by operando neutron diffraction. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.5-23-735
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