Authors
Yuan Wang, Shiyang Wang, Junbo Cui, Kangyu Yi, Kewei Wang, Ke Wang, Zixu He, Yijiang Bao, Junpeng Yan, Yulin Jie, Dongsheng Xu, Xuefeng Wang, Ruiguo Cao, Shuhong Jiao
Published in
Angewandte Chemie (International ed. in English). Pages e2311794. Aug 26, 2026. Epub Aug 26, 2026.
Abstract
Temperature plays a critical role in governing the plating behavior of metallic anodes by regulating ionic conductivity of the electrolyte, desolvation energy, and charge transfer processes in the solid-electrolyte interphase (SEI). While low temperature commonly triggers dendritic growth on metallic anodes (e.g., Li, Na, and Zn), the temperature effect on Mg plating/stripping behaviors remains unknown thus far. Herein, we report an unconventional temperature-dependent deposition behavior of Mg anodes that tends to form dendrite-free deposits at low temperatures. Integration of cryo-transmission electron microscopy, atomic force microscopy, and x-ray photoelectron spectroscopy reveals that the SEI layer formed at low temperatures has an ultrathin thickness (∼2-3 nm) and is enriched in high-modulus inorganic compounds, which facilitates the uniform deposition of Mg anodes. As a result, the Mg metal anode realizes an exceptional average Coulombic efficiency up to 99.92% over 2000 cycles at -20°C. This study demonstrates the unconventional deposition behavior of Mg metal anodes at low temperatures, underpinning their potential for low-temperature applications and advancing the fundamental understanding of metal deposition.
PMID:
42644577
Bibliographic data and abstract were imported from PubMed on 26 Aug 2026.
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