相关实验视频

Updated: May 9, 2026

Construction and Testing of Coin Cells of Lithium Ion Batteries

Construction and Testing of Coin Cells of Lithium Ion Batteries

Published on: August 2, 2012

一种用于耐用低温离子电池的新型球形Mg/Sn联合合化类型Fe2−4材料

Weiyi Li¹, Min Zhang¹, Shen Cai¹

¹Beijing Laboratory of New Energy Storage Technology and Key Laboratory of Power Station Energy Transfer Conversion and System of Ministry of Education, School of Energy Power and Mechanical Engineering, North China Electric Power University, Beijing, 102206, China. Huajun.Tian@ncepu.edu.cn.

|August 26, 2025

概括

这项研究引入了离子电池的Mg/Sn配合硫酸铁阴极,显著提高了低温性能和耐用性. 这种新材料提供了更好的动力学和导电性,用于更好的电化学应用.

科学领域:

材料科学
电化学
能量储存

背景情况:

由于其高电压和结构稳定性,Alluaudite型Na2+2xFe2-x(SO4) 3是离子电池 (SIB) 的有希望的阴极.
然而,电子导电性较差和动力较慢限制了其实用的电化学性能.

研究的目的:

开发一种新型的Mg/Sn联合合的Alluaudit类型阴极材料,以提高SIB的性能.
研究Mg/Sn配合剂对结构稳定性,离子扩散和电子导电性的影响.

主要方法:

通过Mg/Sn联合合合成Na2.48 ((Fe0.89Mg0.03Sn0.04) 1.76 ((SO4) 3) 阴极材料.
电化学特性包括循环性能,速率能力和低温性能.
电子磁共振 (EPR) 和原子力显微镜 (AFM) 用于结构和导电性分析.

主要成果:

/共阴极 (NFMS/C-Sn0.03) 显示了增强的离子扩散动力学和改进的电化学特性,特别是在低温下.
在5°C下进行1500个循环后,长期保持91. 6%的容量,在10°C下达到74. 3mAhg-1,在50°C下达到58. 3mAhg-1.
在低温下表现出色,在-5°C时保持95.5%,在室温和-15°C时具有显著的循环稳定性.

结论:

/共有效地稳定结构,抑制电解质分解,并增强alluaudite类型阴极的电子导电性.
该战略为SIB设计耐用,高性能和耐低温的正极材料提供了可行的途径.

更多相关视频

Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques

Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques

Published on: November 11, 2013

Elemental-sensitive Detection of the Chemistry in Batteries through Soft X-ray Absorption Spectroscopy and Resonant Inelastic X-ray Scattering

Elemental-sensitive Detection of the Chemistry in Batteries through Soft X-ray Absorption Spectroscopy and Resonant Inelastic X-ray Scattering

Published on: April 17, 2018

相关概念视频

Batteries and Fuel Cells

Batteries and Fuel Cells

A battery is a galvanic cell that is used as a source of electrical power for specific applications. Modern batteries exist in a multitude of forms to accommodate various applications, from tiny button batteries such as those that power wristwatches to the very large batteries used to supply backup energy to municipal power grids. Some batteries are designed for single-use applications and cannot be recharged (primary cells), while others are based on conveniently reversible cell reactions that...