Author:
Kim Tae Hyeon,Kim Sang Hyeong,Park Sung Su,Kang Min Su,Kim Sung Soo,Kim Hyun-seung,Jeong Goojin
Abstract
<p>The quick-charging performance of SiO electrodes is evaluated with a focus on solid electrolyte interphase (SEI)-reinforcing effects. The study reveals that the incorporation of fluoroethylene carbonate (FEC) into the SiO electrode significantly reduced the electrode fatigue, which is from the the viscoelastic properties of the FEC-derived SEI film. The impact of FEC is attributed to its ability to minimize the mechanical failure of the electrode caused by additional electrolyte decomposition. This beneficial outcome arises from volumetric stain-tolerant characteristics of the FEC-derived SEI film, which limited exposure of the bare SiO surface during 0.5 C-rate cycling. Notably, FEC greatly improves Li deposition during quick-charge cycles following aging at 0.5 <italic>C</italic>-rate cycling due to its ability to maintain a strong electrical connection between active materials and the current collector, even after extended cycling. Given these findings, we assert that mitigating SEI layer deterioration, which compromises the electrode structure, is vital. Hence, enhancing the interfacial attributes of the SiO electrode becomes crucial for maintaining kinetic efficiency of battery system.</p>
Funder
Ministry of Trade, Industry and Energy
Korea Evaluation Institute of Industrial Technology
Korea Planning and Evaluation Institute of Industrial Technology
Publisher
The Korean Electrochemical Society - English Journal
Cited by
5 articles.
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