AI Article Synopsis
- The study addresses the challenges of uncontrolled dendrite growth and side reactions in Li metal anodes (LMAs).
- A new friction-induced method forms a strong protective interlayer on Li metal, enhancing performance by improving reversible Li plating/stripping and reducing unwanted reactions.
- The resulting Li@CFO cells demonstrate exceptional longevity and cycling stability, making them highly effective for use in advanced battery systems.
Article Abstract
The practical application of Li metal anodes (LMAs) is limited by uncontrolled dendrite growth and side reactions. Herein, we propose a new friction-induced strategy to produce high-performance thin Li anode (Li@CFO). By virtue of the in situ friction reaction between fluoropolymer grease and Li strips during rolling, a robust organic/inorganic hybrid interlayer (lithiophilic LiF/LiC framework hybridized -CF-O-CF- chains) was formed atop Li metal. The derived interface contributes to reversible Li plating/stripping behaviors by mitigating side reactions and decreasing the solvation degree at the interface. The Li@CFO||Li@CFO symmetrical cell exhibits a remarkable lifespan for 5,600 h (1.0 mA cm and 1.0 mAh cm) and 1,350 cycles even at a harsh condition (18.0 mA cm and 3.0 mAh cm). When paired with high-loading LiFePO cathodes, the full cell lasts over 450 cycles at 1C with a high-capacity retention of 99.9%. This work provides a new friction-induced strategy for producing high-performance thin LMAs.
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|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10597943 | PMC |
| http://dx.doi.org/10.1007/s40820-023-01210-6 | DOI Listing |
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