Abstract
<TEX>$^7Li$</TEX> nuclear magnetic resonance (NMR) spectra have been observed for <TEX>$LiMPO_4$</TEX> (M = Fe, Mn) samples, as a promising cathode material of lithium ion battery. Observed <TEX>$^7Li$</TEX> shifts of <TEX>$LiFe_{1-x}Mn_xPO_4$</TEX> (x = 0, 0.6, 0.8, and 1) synthesized with solid-state reaction are compared with calculated <TEX>$^7Li$</TEX> shift ranges based on the supertranferred hyperfine interaction of Li-O-M. Ex situ <TEX>$^7Li$</TEX> NMR study of <TEX>$LiFe_{0.4}Mn_{0.6}PO_4$</TEX> in different cut-off voltage for the first charge process is also performed to understand the relationship between <TEX>$^7Li$</TEX> chemical shift and oxidation state of metals affected by delithiation process. The increment of oxidation state for metals makes to downfield shift of <TEX>$^7Li$</TEX> by influencing the supertranferred hyperfine interaction.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
