Manipulating cation solvation equilibrium in sole-solvent electrolyte for fast-charging and wide-temperature-range sodium metal batteries.

Yumei Liu, Yongqing Gong, Tianyu Huang, Chenxi Zheng, Kaier Shen, Yingjing Yan, Menghao Yang, Quanquan Pang

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Article in Nature communications, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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8 authors.

Yumei LiuSchool of Chemistry and Chemical Engineering, Chongqing University, Chongqing, China. liuyumei@cqu.edu.cn.

Yongqing GongSchool of Materials Science and Engineering, Tongji University, Shanghai, China.

Tianyu HuangSchool of Materials Science and Engineering, Tongji University, Shanghai, China.

Chenxi ZhengState Key Laboratory of Advanced Waterproof Materials, Beijing Key Laboratory for Theory and Technology of Advanced Battery Materials, School of Materials Science and Engineering, Peking University, Beijing, China.

Kaier ShenState Key Laboratory of Advanced Waterproof Materials, Beijing Key Laboratory for Theory and Technology of Advanced Battery Materials, School of Materials Science and Engineering, Peking University, Beijing, China.

Yingjing YanState Key Laboratory of Advanced Waterproof Materials, Beijing Key Laboratory for Theory and Technology of Advanced Battery Materials, School of Materials Science and Engineering, Peking University, Beijing, China.

Menghao YangSchool of Materials Science and Engineering, Tongji University, Shanghai, China. menghaoyoung@tongji.edu.cn.ORCID http://orcid.org/0000-0001-7926-5113

Quanquan PangState Key Laboratory of Advanced Waterproof Materials, Beijing Key Laboratory for Theory and Technology of Advanced Battery Materials, School of Materials Science and Engineering, Peking University, Beijing, China. qqpang@pku.edu.cn.ORCID http://orcid.org/0000-0003-0712-6952

Funding

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6 · The paper itself

Abstract

Sodium metal batteries represent a highly promising solution for grid-scale energy storage. However, their fast-charging capability and wide-temperature operation remain constrained by dynamic interphase degradation and inaccessible sodium coordination chemistry. Central to these challenges is the solvation structures as dictated by cation-dipole (Na⁺-solvent) and cation-anion (Na⁺-anion) interactions. Here, we engineer a sole-solvent electrolyte by tailoring the critical thermodynamic balance between the cation-anion and cation-solvent interactions that fundamentally describes the electrolyte behaviors. By leveraging the methyl-induced electron donation effect in 3-methyltetrahydrofuran, we modulate the Na⁺-anion and Na⁺-solvent interactions, and configure the Na⁺ solvation environment into a balanced anion-solvent-coordinated structure. The weakened Na

Identifiers

PMID42031759

DOI10.1038/s41467-026-71852-8

PMCPMC13314990

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