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Researchers develop electrolyte with stable cycling life
 
Date:2019-11-19  Source:Xinhua

 

BEIJING, Nov. 19 (Xinhua) -- Chinese researchers have developed a new type of electrolyte to provide stable power cycling retention of batteries, according to the Chinese Academy of Sciences (CAS) on Tuesday.

 

Sodium-based dual-ion batteries (SDIBs) have advantages of high operating voltage, environmental friendliness and low cost.

 

Developing quasi-solid-state electrolytes (QSSEs) with excellent electrochemical stability at high voltage can improve the properties of the SDIBs, said a recent paper published in the journal of Advanced Functional Materials.

 

The researchers from the Shenzhen Institutes of Advanced Technology of the CAS developed a flexible SDIB based on a QSSE, which exhibits a porous 3D structure with apparently enhanced ionic conductivity, facilitating fast ionic migration of both anions and cations.

 

The SDIB showed excellent cycling stability with a capacity retention of more than 90 percent after 600 cycles, high flexibility and a wide working temperature range from minus 20 degrees Celsius to 70 degrees Celsius, said the paper.

 

The results suggested the potential of the batteries for high-performance flexible energy storage applications.

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