Weak Intermolecular Interactions for Strengthening Organic Batteries

Organic batteries have attracted a lot of attention due to the advantages of flexibility, light weight, vast resources, low cost, recyclability, and ease to be functionalized through molecular design. The biggest difference between organic materials and inorganic materials is the relatively weak intermolecular interactions in organic materials but strong covalent or ionic bonds in inorganic materials, which is the inherent reason of their different physiochemical and electrochemical characteristics. Therefore, the relatively weak intermolecular interactions can indisputably affect the electrochemical performance of organic batteries significantly. Herein, the intermolecular interactions that are closely related to organic redox-active materials and unique in organic batteries are summarized into three parts: 1) between neighbor active molecules, 2) between active molecules and the conduction additives, and 3) between active molecules and the binders. We hope this short review can give a distinct viewpoint for better understanding the internal reasons of high-performance batteries and stimulate the deep studies of relatively weak intermolecular interactions for strengthening the performance of organic batteries.