Designing a 3D MXene microsphere encapsulating MOF-derived ZnSe nanoparticles as an anode for highly stable potassium-ion batteries

3D MXene-based microspheres encapsulating metal–organic framework-derived ZnSe@N-doped carbon nanoparticles are successfully fabricated by spray drying. Owing to the unique structural features, they exhibited excellent K-ion storage performance.