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Synthesis and Characterization of Functionalized Metal-organic Frameworks

Synthesis and Characterization of Functionalized Metal-organic Frameworks

Published on: September 5, 2014

合成Sb-pyromellitic酸金属有机框架材料及其储存特性

Zhiyan He¹, Wei Zhang¹, Mingqi Li^1,2

¹College of Chemistry and Chemical Engineering, China West Normal University Nanchong 637009 China lmingq888@aliyun.com.

|June 5, 2023

概括

一种新型的抗-酸 (Sb-PMA-300) 金属有机框架 (MOF) 显示出作为离子电池阳极的高容量. 这种材料为下一代储能应用提供了出色的稳定性和低成本.

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:

开发具有成本效益,高容量的电极材料对于推进离子电池技术至关重要.
目前阳极材料的局限性阻碍了离子电池的广泛采用.

研究的目的:

为离子电池阳极合成和表征一种新的以为基础的金属有机框架 (MOF).
为了评估Sb-PMA-300复合材料的电化学性能和循环稳定性.

主要方法:

通过化Sb3+和铁酸合成Sb-PMA-300 MOF,然后在300°C进行热处理.
对Sb-PMA-300复合材料作为离子电池中阳极材料的电化学测试.
分析电极过程动态和离子扩散系数.

主要成果:

在0.1A g-1下,Sb-PMA-300复合材料实现了443 mA h g-1的稳定容量.
在200个循环后,在1Ag-1保持了326.4mAhg-1,表明了极好的循环稳定性.
电极动力学主要是扩散控制的,Na+扩散系数从10-12到3.0×10-10cm2s-1不等.

结论:

独特的MOF结构,有机配体防止Sb聚合和缓冲体积变化,有助于卓越的循环稳定性.
Sb-PMA-300为实际的离子电池应用提供了一个有前途的低成本,高容量的阳极材料.

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