• Covariance of interphasic properties and fast chargeability of energy-dense lithium metal batteries
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  • 2025-09-04 15:36:57|
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ㅇ [Title]        Covariance of interphasic properties and fast chargeability of energy-dense lithium metal batteries


ㅇ [Journal]  Nature Energy
                                                                                                                                                                                                        

ㅇ [Author]    Hyeokjin Kwon, Seongyeong Kim, Jonghyun Hyun, Ha Eun Lee, Seong Su Kim, Yesom Kim, Il Ju Kim, Kyungjae Shin, Sejin Kim, Changhoon Park, Hongsin Kim,

                             Dongseok Shin, Hee-Tak Kim*


ㅇ [Abstrct]

Lithium metal batteries can achieve high energy density, alleviating range anxiety for electric vehicles. However, the rational interphase design under fast charging conditions

remains difficult. Here we explore a series of pyran-based electrolytes with various substitutional anions under a fast charging condition and observe weakly Li+-associating

anions facilitating uniform lithium plating under a fast charging condition. We demonstrate lithium metal batteries achieving a 5–70% state of charge (SoC) within 12 min

over 350 repeated cycles at a 4C (8.4 mA cm−2) charging rate, as well as high-energy designs delivering projected energy densities of 386 Wh kg−1 reaching a 10–80% SoC

within 17 min over 180 cycles. We propose that the improved fast charging performance is in tandem with the ability of the weakly Li+ associating anions to suppress

inorganic species clustering within the solid–electrolyte interphase and demonstrate the potential for electrolyte advancement based on the proposed mechanism.





 
 

 
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