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DOE OSTI · 3024111

Probing and Tuning Spatiotemporal pH Evolution in Aqueous Zinc Ion Batteries

Zheng, Xueli [SLAC]·Nada, Jagjit [SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States); Stanford Battery Center]
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Abstract

Aqueous zinc-ion batteries (AZIBs) offer a combination of safety and low cost, but they suffer from dynamic pH fluctuations that drive parasitic reactions and capacity fading. In this review, we report the current mechanistic understanding of the dynamic pH evolution across the electrolyte-electrode interface and its role in triggering interphase instability. We summarize advanced strategies to regulate pH, including electrolyte engineering, electrode surface modification, and interphase construction. We further discuss current methods for probing pH dynamics and outline potential future approaches for gaining deeper mechanistic and design insights.

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Zheng, Xueli [SLAC], Nada, Jagjit [SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States); Stanford Battery Center]. 2026-04-01. Probing and Tuning Spatiotemporal pH Evolution in Aqueous Zinc Ion Batteries. https://www.osti.gov/biblio/3024111

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