Fig. 3: TOF-SIMS results of the hydrated Na0.67MnO2 sample.
From: The stability of P2-layered sodium transition metal oxides in ambient atmospheres
a the comparison of FTIR spectra of the hydrated Na0.67MnO2 and hydrated Na0.67MnO2 after the scavenging process, indicating that after scavenging, most of the sodium (bi)carbonate impurities was removed. b TOP-SIMS spectra of OH−, MnO−, MnO2−, and C2HO− secondary ion fragments over 500 s Cs+ sputtering along the depth profile of the sample after scavenging processes. c TOF-SIMS chemical mapping of the hydrated Na0.67MnO2 after the scavenging process, showing the distribution of OH−, MnO2−, MnO−, C2HO−, NaC2O2−, and C− secondary ions.
