A method to synthesize non-van der Waals MAX phases and van der Waals layered early transition metal Xide chalcogenides (TMXCs) is developed through editing of covalent M–A/M–X sublayers. Exfoliated monolayer TMXCs resemble MXenes but feature tunable oxidation states, making the materials promising for applications in energy storage and catalysis.
- Ziqian Li
- Ke Chen
- Qing Huang
