Related Experiment Video
Updated: May 17, 2026
11:04
Synthesis of Ionic Liquid Based Electrolytes, Assembly of Li-ion Batteries, and Measurements of Performance at High Temperature
Published on: December 20, 2016
A stable sulfone based electrolyte for high performance rechargeable Li-O2 batteries
Dan Xu1, Zhong-li Wang, Ji-jing Xu
1State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Jilin, China.
Chemical Communications (Cambridge, England)
|October 26, 2012
Summary
Researchers developed a novel tetramethylene sulfone electrolyte for rechargeable lithium-oxygen batteries. This catalyst-free approach yielded superior battery performance and predominantly lithium peroxide discharge products.
Area of Science:
- Electrochemistry
- Materials Science
- Energy Storage
Background:
- Rechargeable lithium-oxygen (Li-O(2)) batteries offer high theoretical energy density but face challenges with electrolyte stability and reaction product management.
- Traditional Li-O(2) battery research often relies on catalysts to improve performance and control discharge products.
Purpose of the Study:
- To investigate the feasibility and performance of a tetramethylene sulfone (SML) based electrolyte in rechargeable Li-O(2) batteries.
- To evaluate the battery performance without the need for a catalyst.
- To characterize the discharge products formed using the SML electrolyte.
Main Methods:
- A novel electrolyte formulation based on tetramethylene sulfone was synthesized and employed in a Li-O(2) battery setup.
- Electrochemical performance was assessed through galvanostatic cycling, including charge-discharge profiles and cycling stability.
- The morphology and composition of the discharge products were analyzed using techniques such as X-ray diffraction (XRD) and scanning electron microscopy (SEM).
Main Results:
- The tetramethylene sulfone based electrolyte enabled high-performance rechargeable Li-O(2) battery operation without any added catalyst.
- Superior battery performance, including capacity and cycling stability, was achieved.
- The discharge product was predominantly composed of lithium peroxide (Li(2)O(2)), indicating controlled and desired reaction pathways.
Conclusions:
- Tetramethylene sulfone is a promising electrolyte component for developing efficient and stable catalyst-free rechargeable Li-O(2) batteries.
- The SML electrolyte facilitates the formation of the desired Li(2)O(2) discharge product, contributing to improved battery performance.
- This work presents a significant advancement towards practical and cost-effective Li-O(2) battery technologies.
Related Concept Videos
03:12Batteries and Fuel Cells
A battery is a galvanic cell that is used as a source of electrical power for specific applications. Modern batteries exist in a multitude of forms to accommodate various applications, from tiny button batteries such as those that power wristwatches to the very large batteries used to supply backup energy to municipal power grids. Some batteries are designed for single-use applications and cannot be recharged (primary cells), while others are based on conveniently reversible cell reactions that...
02:26Preparation and Reactions of Sulfides
Sulfides are the sulfur analog of ethers, just as thiols are the sulfur analog of alcohol. Like ethers, sulfides also consist of two hydrocarbon groups bonded to the central sulfur atom. Depending upon the type of groups present, sulfides can be symmetrical or asymmetrical. Symmetrical sulfides can be prepared via an SN2 reaction between 2 equivalents of an alkyl halide and one equivalent of sodium sulfide.
02:48Ionic Bonding and Electron Transfer
Ions are atoms or molecules bearing an electrical charge. A cation (a positive ion) forms when a neutral atom loses one or more electrons from its valence shell, and an anion (a negative ion) forms when a neutral atom gains one or more electrons in its valence shell. Compounds composed of ions are called ionic compounds (or salts), and their constituent ions are held together by ionic bonds: electrostatic forces of attraction between oppositely charged cations and anions.
04:02Weak Acid Solutions
Few compounds act as strong acids. A far greater number of compounds behave as weak acids and only partially react with water, leaving a large majority of dissolved molecules in their original form and generating a relatively small amount of hydronium ions. Weak acids are commonly encountered in nature, being the substances partly responsible for the tangy taste of citrus fruits, the stinging sensation of insect bites, and the unpleasant smells associated with body odor. A familiar example of a...
01:24Types of Reversible Electrodes
For electrode reversibility to be maintained, all the reactants and products involved in the half-reaction must be present at the electrode. There are several types of reversible electrodes (half-cells).In metal-metal-ion electrodes, a metal balances electrochemically with a solution of its own ions. Examples are Cu2+|Cu and Zn2+|Zn. Metals that react with the solvent, like group 1 and most group 2 metals, which react with water, and zinc, which reacts with aqueous acidic solutions, cannot be...
01:17Ion Exchange
Ion exchange chromatography separates charged molecules from a solution by reversibly exchanging them with mobile, or 'active', ions associated with the oppositely charged stationary phase. This method can be used to separate ions, soften and deionize water, and purify solutions. The polymers comprising the ion-exchange column are high-molecular-weight and chemically stable polymers, crosslinked to be porous and essentially insoluble. They are also functionalized with either acidic or basic...