The Technology
Various carbonaceous anode substances have been developed to improve both the rate and capacity characteristics of Li-ion batteries (LIBs) and yet, the performances of the anodes depend on the quality of the inevitable and uncontrollable due to a growth of the solid-electrolyte interphase (SEI), resulting from the electrolyte reduction and decomposition during the initial cycles, resulting in severe Li-ion consumption. Fabrication of artificial SEI (ART-SEI) is proposed as a method to overcome this challenge: a novel molecular layer deposition (MLD) based coating, utilizing as a precursor the commercial battery electrolyte itself, with a crosslinker functionalized film grown on the surface of the carbonaceous anode materials, was shown to mitigate the irreversible capacity loss associated with the SEI build-up during the formation cycles, as well as improves the cycling performances due to a low electrochemical impedance.
Advantages
- Conformal coating
- 10% improvement in the anode’s capacity and cycle life
Applications and Opportunities
- Li-Ion batteries
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