Fluorinated Interphase Enabled by Lithium Salt‐Driven Electrical Double‐Layer Modulation for Advanced Zinc Metal Batteries DOI Creative Commons
Ziwei Zhao, Pengcheng Li, Yuxuan Wu

et al.

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: May 29, 2025

Abstract High‐concentration electrolytes show promise in zinc metal batteries, but low salt solubility limits options. This study introduces a highly soluble, reduction‐active lithium into conventional electrolytes. By modifying the solvation structure and electric double layer, reversibility of anode is enhanced. At cathode, ion absorption on surface leads to restructured thereby reducing dissolution active materials. With this electrolyte, Zn//Cu half‐cells exhibit over 1300 cycle lifespan with an average columbic efficiency 99.60%. Furthermore, full‐cell high mass loading (5 mg cm −2 ) NaV 3 O 8 ·1.5 H 2 (NVO) cathode negative‐to‐positive (N/P) ratio retains 95% capacity after 250 cycles. Even at −45 °C, retention battery almost 100% 500 work highlights potential high‐concentration salts improve stability aqueous batteries by modulating structures interfacial chemistry.

Language: Английский

Fluorinated Interphase Enabled by Lithium Salt‐Driven Electrical Double‐Layer Modulation for Advanced Zinc Metal Batteries DOI Creative Commons
Ziwei Zhao, Pengcheng Li, Yuxuan Wu

et al.

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: May 29, 2025

Abstract High‐concentration electrolytes show promise in zinc metal batteries, but low salt solubility limits options. This study introduces a highly soluble, reduction‐active lithium into conventional electrolytes. By modifying the solvation structure and electric double layer, reversibility of anode is enhanced. At cathode, ion absorption on surface leads to restructured thereby reducing dissolution active materials. With this electrolyte, Zn//Cu half‐cells exhibit over 1300 cycle lifespan with an average columbic efficiency 99.60%. Furthermore, full‐cell high mass loading (5 mg cm −2 ) NaV 3 O 8 ·1.5 H 2 (NVO) cathode negative‐to‐positive (N/P) ratio retains 95% capacity after 250 cycles. Even at −45 °C, retention battery almost 100% 500 work highlights potential high‐concentration salts improve stability aqueous batteries by modulating structures interfacial chemistry.

Language: Английский

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