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May 16, 2026Journal of Energy StorageOpen Access

Long cycle and calendar life of Si-based Li-ion batteries enabled by localized high-concentration electrolytes and their surprising water tolerance

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Authors

LML. C. MeyerMRMarco-T.F. RodriguesKGKevin Gering

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Overview

Randomized trial shows improved calendar life and cycle stability in silicon batteries with localized high-concentration electrolytes, indicating enhanced performance despite water presence.

Key Points

  • This research aims to evaluate the impact of localized high concentration electrolytes on the performance and stability of silicon-based lithium-ion batteries.
  • Evaluated silicon-based battery cells using localized high concentration electrolytes with varying water concentrations (200–300 ppm and 1000 ppm)
  • Performed calendar life and cycle life tests to assess capacity retention over 200 days
  • Utilized nano-FTIR spectroscopy to analyze the solid electrolyte interphase (SEI) chemistry
  • Cells with 200–300 ppm water exhibited an 8% higher capacity (1200–1300 mAh/g Si) in calendar life tests compared to those with <20 ppm
  • Cycle life tests revealed similar performance (900–1000 mAh/g Si) in cells with 200–300 ppm vs. 20 ppm water
  • SEI analysis showed increased Li2O concentration in cells with 1000 ppm water, potentially enhancing cell stability

Cite This Study

Meyer et al. (2026) studied this question.

synapsesocial.com/papers/6a080acea487c87a6a40cd3fhttps://doi.org/10.1016/j.est.2026.122559
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Also Consider

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