The XPS and XAES spectra of Na0.88Mn0.56PS3

► Effects of long Na intercalation times on the Na2xMn1−xPS3 electronic properties. ► XPS and XAES spectra on the Na2xMn1−xPS3 as a function of intercalation time. ► No charge transfer between Na and MnPS3 even with long intercalation times. ► No change in the bond between Na and MnPS3 as a function of intercalation time. ► Na0.88Mn0.56PS3 good candidate for further intercalation.