Alkalized Ti3C2 MXene nanoribbons with expanded interlayer spacing for high-capacity sodium and potassium ion batteries

Alkalized Ti3C2 (a-Ti3C2) MXene nanoribbons were successfully synthesized by shaking treatment of Ti3C2 in KOH solution. Benefited from the expanded interlayer spacing, narrow widths of nanoribbons as well as 3D interconnected porous frameworks for enhanced ion reaction kinetics and improved structure stability, the resulting a-Ti3C2 anodes showed excellent sodium/potassium storage performance.285