carbon nanotube clusters grown from threedimensional porous graphene networks for Li–S batteries

What is it about?

Carbon nanotube (CNT) clusters grown in situ in three-dimensional (3D) porous graphene networks (3DG-CNTs), with a high surface area , superior electronic conductivity, and a 3D porous networked structure. Large clusters of CNTs anchored on the inner walls of 3D graphene networks act as capillaries, benefitting restriction of agglomeration by high contents of immersed S. Moreover, the capillary-like CNT clusters grown in situ in the pores efficiently form restricted spaces for Li polysulfides, significantly reducing the shuttling effect and promoting S utilization throughout the charge/discharge process. With an areal S mass loading of 81.6 wt.%, the 3DG-CNT/S electrode exhibits highly improved performances.

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