电解质
材料科学
硝酸锂
阳极
电化学
化学工程
电极
锂(药物)
化学
离子
离子键合
有机化学
医学
工程类
内分泌学
物理化学
作者
Wenjing Zhang,Zhenguo Zhang,Hongtao Zhang,Yang Luo,Xinjian Liu,Zhonghao Rao
出处
期刊:Advanced Science
[Wiley]
日期:2025-03-20
卷期号:12 (18): e2416656-e2416656
被引量:3
标识
DOI:10.1002/advs.202416656
摘要
Abstract Designing a stable electrode‐electrolyte interface (EEI) is critical for developing lithium metal batteries with high energy density, enhanced safety, and broad applicability. Lithium nitrate (LiNO 3 ) is an attractive sacrificial additive for lithium metal anode, while its poor solubility in high‐voltage‐resistant ester/nitrile electrolytes severely limits its utility. To solve it, a novel suspension electrolyte strategy is proposed that uniformly disperses LiNO 3 particles in an ester/nitrile mixed electrolyte to stabilize the electrode interface. The suspended LiNO 3 particles exhibit dual functionality: LiNO 3 enhances the compatibility between the electrode and the electrolyte by affecting the Li + solvation environment and preferentially adsorb on the electrode surface; moreover, the in situ formed LiN x O y ‐rich EEI by LiNO 3 decomposition with accelerated Li⁺ transport kinetics, effectively suppresses parasitic reactions and improves rate performance. The optimized electrolyte makes Li||NCM523 battery run stably for 100 cycles with a high capacity retention of 90.05% at 60 °C and stably operated at low temperature (‐10 °C). Moreover, the electrolyte shows excellent electrochemical stability at a high‐voltage of 4.5 V. This work presents a dual‐strategy advancement featuring wide‐temperature electrolyte formulation and precision interface engineering, synergistically achieving high‐specific‐energy lithium metal batteries.
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