STXM maps of Mg 2 concentration for discharged top and charged bottom particles Publication about this research HD Yoo JR Jokisaari YS Yu BJ Kwon L Hu S Kim SD Han M Lopez SH Lapidus GM Nolis BJ Ingram IL Bolotin S Ahmed RF Klie JT Vaughey TT Fi ID: 767399
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STXM maps of Mg2+ con-centration for discharged (top) and charged (bottom) particles. Publication about this research: H.D. Yoo, J.R. Jokisaari, Y.-S. Yu, B.J. Kwon, L. Hu, S. Kim, S.-D. Han, M. Lopez, S.H. Lapidus, G.M. Nolis, B.J. Ingram, I.L. Bolotin, S. Ahmed, R.F. Klie, J.T. Vaughey, T.T. Fister, and J. Cabana, ACS Energy Lett. 4, 1528 (2019). Work was performed at Lawrence Berkeley National Laboratory, ALS Beamline 5.3.2.2, and at Argonne National Laboratory, APS Beamlines 11-BM and 4-ID-C. Operation of the ALS is supported by the U.S. Department of Energy, Office of Science, Basic Energy Sciences program. Renewed Prospects for Rechargeable Mg Batteries Scientific Achievement Researchers showed that, contrary to previous reports, it's possible to create a rechargeable battery using magnesium ions if the electrode material is first conditioned at high temperature.Significance and ImpactWith twice the charge of lithium ions, magnesium ions hold great promise as the basis for high-energy-density batteries suitable for use in electric vehicles.Research DetailsMultimodal approach, including scanning transmission x-ray microscopy (STXM), probed elemental, chemical, and structural changes in vanadium oxide (V2O5) electrode.Found that Mg2+ can penetrate V2O5 surface at 110 ◦C.Initial cycle at 110 ◦C breaks up V2O5, exposing more surface area and enabling subsequent cycles at 25 ◦C.