3-D Edge-Oriented Electrocatalytic NiCo_2S_4 nanoflakes on Vertical Graphene for Lithium Sulfur Batteries

摘要

Polysulfide shuttling between the sulfur cathode and the lithium anode leads to low Columbic efficiency and cycling stability, which hinders the development of practical lithium sulfur batteries (LSBs). Introducing catalytic nanostructures to stabilize the otherwise soluble polysulfides and promote their conversion to solids has been proved to be an effective strategy in addressing this problem, but the heavy mass of catalysts often results in a low specific energy of the whole electrode.