Intercalation of Transition Metals into MXenes: Impact on Electronic and Pseudocapacitive Properties.

ABSTRACT: MXenes are two-dimensional transition metal carbides and nitrides characterized by versatile electronic and electrochemical properties. Herein, we investigate the electronic interactions between various redox-active transition metals (Ni, Co, Mn, and Zn) intercalated into the conductive Ti₃C₂T_x MXene host. Employing X-ray absorption spectroscopy (XAS) and Bader charge analysis, we reveal that the oxidation states of the intercalated ions remain unchanged upon insertion, whereas Ti atoms within the MXene layers become progressively oxidized with increasing intercalant concentration. Consequently, the electrical resistivity of the intercalated MXenes increases. Ab initio molecular dynamics (AIMD) and density functional theory (DFT) demonstrate distinct

SUBMITTER: Wee S 

PROVIDER: S-EPMC12444977 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature