Diluted Ionic Liquid Electrolyte-Assisted Stable Cycling of Small Molecular Organics

Small-molecular organic materials with high capacity and fast reaction kinetics have gained increasing attention, but they are greatly bothered by the dissolution issue. Unlike the mainstream approaches of material processing, herein, an electrolyte strategy has been proposed to address the dissolution loss of anhydride materials. With the assistance of binary diluent, longer than 1000 times of stable cycling have been realized by 3,4,9,10-perylenetetracarboxylic dianhydride (PTCDA) in ionic liquid electrolyte. Further investigation indicates that the diluent strategy has enabled the same stable cycling under high temperature or on high-loading electrodes, and additionally, its effectiveness has been proved on other small-molecular organics.