Rechargeable Lithium Batteries with Electrodes of Small Organic Carbonyl Salts and Advanced Electrolytes

Abstract

Rechargeable lithium batteries with organic electrode materials are promising energy storage systems with advantages of structural designability, low cost, renewability, and environmental friendliness. Among the reported organic electrode materials, small organic carbonyl compounds are powerful candidates with high theoretical capacities and fast kinetics. However, these compounds are plagued by high solubility in aprotic electrolytes, which is considered as the main issue leading to capacity decay and short cycling life. Herein we review two major methods to solve this problem, including the preparation of small organic carbonyl salts and optimization of the electrolyte. The polarities of organic electrode materials can be enhanced by forming salts. Thus, the dissolution of the organic compounds in aprotic electrolytes with low polarity is depressed. Meanwhile, optimization of the electrolyte with increasing viscosity can also reduce the dissolution. These two strategies provide guidance for future studies of rechargeable lithium batteries with organic electrode materials.

A Carbonyl Compound‐Based Flexible Cathode with Superior Rate Performance and Cyclic Stability for Flexible Lithium‐Ion Batteries

“…Rigid and fragile inorganic structure of presently employed batteries is not suitable for highly flexible devices because bending or deformation leads to structure failure . Therefore, researchers are focusing on the electroactive, organic, and polymer electrode materials in their pursuit of next‐generation LIB materials with high flexibility …”

“…Based on the reversible redox reaction, the organic electrode materials offer various great advantages including high theoretical capacity, environmental friendliness, and sustainability . Furthermore, redox properties of organic materials can be tailored by just adjusting their molecular structure .…”

“…Based on the reversible redox reaction, the organic electrode materials offer various great advantages including high theoretical capacity, environmental friendliness, and sustainability . Furthermore, redox properties of organic materials can be tailored by just adjusting their molecular structure . Several different classes of organic compounds, including conductive polymers, organosulfur compounds, organic free radical compounds, and organic carbonyl compounds, are being explored as electrode materials for organic LIBs.…”

Anodic oxidation of p-phenylenediamines in battery grade electrolytes

“…One of the priorities in this domain is to promote reliable, safe but also lowpolluting electrochemical storage devices for various practical applications from mWh to MWh range. Since the invention of the first rechargeable battery in 1859 by G. Planté (leadacid cell), the current manufacturing of batteries is still dominated by the use of redox-active inorganic species but the organic counterparts appear today as a promising alternative displaying several advantages such as low cost, environmental friendliness and the structural designability [1][2][3][4][5][6][7][8][9]. For instance, the operating redox potential of organic electrodes can be widely tuned by the choice of (i) the electroactive functional group (both n-or p-type 1 [3,10]),…”

Advancing Electrolytes Towards Stable Organic Batteries

“…Although the choice and function of electrolytes are included in a brief section in some reviews on organic batteries, they deserve more comprehensive summary and insightful analysis. [10,11] Herein, we outline the current knowledge of electrolyte engineering towards more stable organic batteries.…”