WS2–3D graphene nano-architecture networks for high performance anode materials of lithium ion batteries

摘要: WS2 nanoflakes were grown on three-dimensional graphene networks (3Dgn) synthesized via a simple chemical vapor deposition (CVD) method. As anode materials for lithium-ion battery applications, the 3Dgn network not only provides robust mechanical support nanostructure, but also enhances its conductivity and ionic kinetics, leading to an overall improvement in electrochemical performance of compared commercial powder. The WS2–3Dgn nanocomposites can deliver reversible capacities 927 416 mA h g−1 at current densities 100 1500 g−1, respectively. At density 200 retain capacity 748 after 500 cycles with Coulombic Efficiency (CE) higher than 98%, indicating outstanding cycling stability. improved is attributed synergistic effect between highly conductive as well their rationally designed nano-architecture. These results demonstrate feasible method synthesize based hybrid next generation high LIBs electrode materials.