A designable sulfur‐linked carbonyl compound anchored on reduced graphene oxide for high‐rate organic lithium batteries

Abstract

The development of organic lithium batteries (OLBs) offers a promising opportunity for the advancement of green and sustainable energy storage systems. However, organic cathode materials face challenges in terms of conductivity, electrochemical activity, and dissolution. Here, we address these limitations by introducing a sulfur‐linked carbonyl compound called poly(dichlorobenzoquinone sulfide) (PDBS), which is polymerized in situ on reduced graphene oxide by a mixed solvent thermal method. The resulting carbonyl compound electrode materials exhibit favorable properties as organic cathode materials for OLBs. After 4000 cycles at a current density of 1000 mA g−1, the carbonyl compound electrodes exhibit a discharge capacity of 102 mAh g−1. This remarkable performance indicates excellent stability and long cycle life, which are crucial for practical applications. These results suggest that PDBS, a designable sulfur‐linked carbonyl compound, holds great promise as an effective organic cathode material for OLBs. In addition, this work provides valuable insights into improving the electrochemical performance of organic cathode materials.

Electrolyte-Induced Morphology Evolution to Boost Potassium Storage Performance of Perylene-3,4,9,10-tetracarboxylic Dianhydride

“…Until now, various cathode materials were discovered for PIBs, such as transition-metal oxide, phosphates, Prussian blue, and organic materials . Among these, organic materials with the merits of environmental benignity, cost-effectiveness, and structural diversity attracted extensive attention for PIBs. − Unfortunately, the dissolution issue of organic materials leads to fast capacity degradation. − Therefore, it is urgent to explore effective strategies to boost the potassium storage performance of organic materials for high-performance PIBs.…”