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Chemical Communications

A sacrificially formed nitrogen-rich CEI from DMI additive enhances the reaction kinetics in sodium-ion batteries

Qiaoyan Lin,a   Xiaofeng Cai,a   Wei Han,b   Yixiang Zhang,a   Li Zhang,c   Zeren Zhoua  and  Lishuang Fan ORCID logo *a  

* Corresponding authors

a MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, China

b School of Chemistry, Chemical and Materials Engineering, Taizhou University, Taizhou, Jiangsu 225300, China

c Heilongjiang Tobacco Industrial Co., Ltd., Harbin 150001, China

Abstract

We propose 1,3-dimethyl-2-imidazolidinone (DMI) as a novel electrolyte additive. It enhances the cycling stability (105.5 mAh g−1 after 200 cycles) and rate capability (99.7 mAh g−1 after 450 cycles at 5C) in Na3V2(PO4)3 (NVP) cathodes. DMI preferentially oxidizes to form a protective cathode film, as confirmed by combined analyses.

Graphical abstract: A sacrificially formed nitrogen-rich CEI from DMI additive enhances the reaction kinetics in sodium-ion batteries

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Article information

DOI
https://doi.org/10.1039/D5CC07224G
Article type
Communication
Submitted
19 Dec 2025
Accepted
17 Mar 2026
First published
20 Mar 2026

Chem. Commun., 2026, Advance Article

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A sacrificially formed nitrogen-rich CEI from DMI additive enhances the reaction kinetics in sodium-ion batteries

Q. Lin, X. Cai, W. Han, Y. Zhang, L. Zhang, Z. Zhou and L. Fan, Chem. Commun., 2026, Advance Article , DOI: 10.1039/D5CC07224G

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