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Updated: Jul 25, 2025

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可持续增强离子储存在零度以下的温度下,使用LiF集成

Heramba Venkata Sai Rama Murthy Koppisetti^1,2, Harsha Rao¹, Hari Vignesh Ramasamy¹

¹Davidson School of Chemical Engineering, Purdue University, West Lafayette, Indiana 47907, United States.

ACS applied materials & interfaces

|June 28, 2023

概括

这项研究引入了用于离子电池的新型双相P3/O3阴极材料,增强了LiF. 这种材料在广泛的温度范围内表现出卓越的稳定性和电化学性能,改善了储存能力.

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
储能储能储能储能储能储能

背景情况:

层层的氧化材料是离子电池的关键.
双相P3/O3结构提供了增强的性能和稳定性.
优化阴极材料对于先进的电池技术至关重要.

研究的目的:

合成和描述与LiF集成的共存的P3/O3双相阴极材料.
为了评估 LiF 集成二相阴极的电化学性能和结构稳定性.
为了研究该材料适合在不同温度下运行的离子电池.

主要方法:

合成P3/O3双相阴极材料与LiF集成.
用X射线衍射 (XRD) 和瑞特维尔德精细化进行结构分析.
感应合的等离子光辐射光谱法 (ICP-OES) 和能量分散式X射线光谱法 (EDS) 用于元素分析.
电化学测试包括循环稳定性,速率能力和在不同温度下全电池性能.

主要成果:

与LiF集成的双相P3/O3阴极表现出极好的容量保留 (85%在室温下,在100个循环后在-20°C下94%).
与原始阴极相比,观察到更高的速度能力和增强的结构稳定性.
一个完整的电池表现出极好的周期稳定性,从-20°C到50°C,能量密度为151.48Wh kg-1.1.

结论:

F集成显著增强Na+动力学和二相P3/O3阴极中的整体储存.
开发的材料对在不同温度条件下运行的高性能离子电池具有前景.
减轻Jahn-Teller扭曲和提高Na+流动性有助于材料的优越电化学性能.

关键词:

融资融资公司注册双相阴极是双相的有层层的氧化物.储存的储存是一种温度范围广泛,温度范围广泛.

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