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阴离子受体DMI提高NaNO₃可溶性通过高性能非水性可充电电池的溶解法规

Ling Hu^1,2, Chunlei Li^1,2,3, Yin Quan^1,2

¹School of Petrochemical Technology, Lanzhou University of Technology, Lanzhou 730050, P.R. China.

ACS applied materials & interfaces

|February 18, 2026

概括

在离子电池电解质中的酸盐 (NaNO3) 溶解度通过使用1,3-二甲基-2-二米达索利丁 (DMI) 增强. 这一策略改善了固体电解质介相 (SEI) 层的形成和电池性能.

科学领域:

材料科学材料科学材料科学
电化学电化学电化学
化学工程是化学工程的重要组成部分.

背景情况:

酸 (NaNO3) 是一种有效的添加剂,用于形成无机的,富含化物的固体电解质介相层 (SEI).
在以太基电解质中NaNO3的有限溶解性限制了其在离子电池中的使用.
开发稳定的SEI层对于高性能离子电池至关重要.

研究的目的:

为了提高NaNO3在离子电池的以太电解质中的溶解性.
为了研究高捐助数溶剂对NaNO3溶解度和SEI形成的影响.
为了提高基于硬碳 (HC) 的离子电池的电化学性能.

主要方法:

引入了1,3-二甲基-2-胺达丁 (DMI),一种高捐赠数溶剂,以增加NaNO3的溶解度.
将DMI度优化为10%,以平衡可溶性和SEI薄膜厚度.
制造并测试了具有优化电解质的HC半细胞.

主要成果:

在以太基电解质中,NaNO3的溶解度增加到0.05M,含有DMI.
优化的电解质形成了一个富含的SEI膜.
半电池显示在0.5°C时具有300mAh·g-1的特定充电容量,并在400个循环后保持91%的容量.

结论:

像DMI这样的高捐助数溶剂可以通过破坏离子配对来有效地提高NaNO3的溶解度.
拟议的战略提供了一个简单的方法来设计用于离子电池的先进电解质.
通过提高NaNO3溶解度来优化SEI形成,可以改善电池周期寿命和容量保留.

关键词:

1,3-二二甲基-二伊米达索利丁丁一.电化学性能电化学性能电化学性能硬碳是一种硬的碳.酸盐溶解化溶解化酸盐和酸盐的使用方法离子电池离子电池

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