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Solid‐electrolyte interphase (SEI) films with controllable properties are highly desirable for improving battery performance. In this paper, a combined experimental and theoretical approach is used to study SEI films formed on hard carbon in Li‐ and Na‐ion batteries. It is shown that a stable SEI layer can be designed by precycling an electrode in a desired Li‐ or Na‐based electrolyte, and that ionic...
We report a computational investigation of the potential of new open-framework allotropes of silicon as Na and Li-ion batteries. Most anode materials used in energy storage systems are characterized by a very high capacity but are very sensitive to the charge/discharge cycling. It is hence appealing to design a material with at the same time a good capacity and maintaining crystalline morphology upon...
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