Extended Data Fig. 4: XPS and Raman spectra.
From: LiMnO2 cathode stabilized by interfacial orbital ordering for sustainable lithium-ion batteries
a, Ex situ core-level Mn 2p XPS spectra of the Mn3O4 nanoarray cathode at different potentials labeled as I to VI in Fig. 3a. b, Ex situ core-level O 2p XPS spectra of the Mn3O4 nanoarray cathode at different potentials labeled I to VI in Fig. 3a. c, Ex situ Raman spectra of the Mn3O4 nanoarray cathode at different potentials labeled I to VI in Fig. 3a.
