Fabrication of N-doped carbon coated CoFeS 2 anchored rGO nanosheet composites: a twin carbon design for Li-ion storage and high energy density supercapacitor applications

The twin-carbon design enhances electron/ion transport, limits volume change, and suppresses side reactions. N-doped carbon-coated CoFeS 2 /rGO improves Li-ion battery and supercapacitor performance.