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2026

Understanding Interfacial Chemistries of LiPF6-Asymmertrically Fluorinated Glyme Ether Electrolytes for High-Voltage Lithium Metal Batteries

H. Lyu, H. Jang, Z. Yu, T-Y. Wang, H. Li, D. Zhao, H. Park*, M-H. Kim*, K-Y. Lin*, Y. Li*

Energy Environ. Sci. 2026

This is the first follow-up of LiPF6-glyme ether electrolytes. We resolve SEI chemistry at the molecular level. The SEI on lithium metal anodes formed in LiPF6-glyme ether electrolytes is dominantly derived from glyme ether solvents, while the PF6 anion has a minimal contribution. Then the question arose: Is this a bad thing?

Anomalous Solubility-Inverted Behavior of LiPF6 in Glyme Ether Solvents for High-Voltage Electrochemistry

H. Lyu, K-Y. Lin, H. Li, H. Park, M-H. Kim, T-Y. Wang, K. Liang, J. Yu, D. Zhao, C-W. Lin, R. B. Kaner, Y. Li*

J. Am. Chem. Soc. 2026, 148 (30): 32307–32317. 

I answered a question that had intrigued me since my undergraduate years. This is exactly the kind of research I have always wanted to pursue: simple and objective, yet profound. The LiPF₆–glyme ether system is full of high-hanging fruit and rich insights that are difficult to uncover, but well worth the effort. I can hardly wait to overturn the conventional understanding of this field.