One-step growth of 3D CoNi₂S₄ nanorods and cross-linked NiCo₂S₄ nanosheet arrays on carbon paper as anodes for high-performance lithium ion batteries

Abstract

3D CoNi2S4 and cross-linked NiCo2S4 arrays have been grown on carbon paper (CP) using a one-step hydrothermal method. The 3D cross-linked structure provides a convenient channel for electron and lithium-ion (Li(+)) transport and performs a facile strain relaxation during cycling, exhibits high capacity, excellent rate capability and superior cycle performance.