2D Materials as Ionic Sieves for Inhibiting the Shuttle Effect in Batteries.

Alternatives of commercial lithium-ion batteries (LIBs) have drawn huge attention due to the large demand of energy storage systems and the lack of resources for traditional LIBs. Promising candidates include but are not limited to Li-S batteries, organic batteries and flow batteries. However, the dissolution of active materials and the consequent shuttle effect, as one of the main challenges in these candidates, always leads to significant capacity loss and poor cycling life. The rising two-dimensional (2D) materials, with well-defined structures and attractive physical and chemical properties, provide a new vision to solve these problems via suppressing the shuttle of the dissolved active materials. Herein, we present a minireview on the advances and perspectives of 2D materials as ionic sieves for inhibiting the shuttle effect in batteries.