相关实验视频

Updated: Jun 23, 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

硫/碳阴极材料化学和形态优化为-硫电池的-硫电池

Tayeba Safdar^1,2, Chun Huang^1,2,3

¹Department of Materials Imperial College London London SW7 2AZ UK a.huang@imperial.ac.uk.

|September 27, 2024

概括

研究人员使用一种新的硫/碳复合材料开发了先进的硫电池 (LSB). 通过融扩散和泥渣造的优化阴极制造显著提高了LSB的性能和稳定性.

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:

硫电池 (LSB) 由于大量的硫,因此具有较高的理论容量.
LSBs的商业化受到诸如聚硫化物航班等挑战的阻碍.

研究的目的:

为 LSB 阴极合成硫/碳 (S/C) 复合物.
使用可扩展的融扩散和泥造方法优化阴极制造.
研究碳纳米粒子比率对LSB性能的影响.

主要方法:

使用融扩散和泥渣造的S/C复合阴极的制造.
在不同制造阶段碳纳米粒子 (C65) 含量的系统变化.
电化学表征包括放电能力和循环稳定性测试.

主要成果:

阴极结构异质性,裂和机械强度在融扩散过程中受到C65含量的影响.
最优的阴极 (TC10.5) 在融扩散中使用了10.5%的C65,在泥中使用了24.5%的C65.
在0.05C时达到~1500 mA hg-1的初始放电容量,在0.1C时达到800 mA hg-1的初始放电容量,在100个循环后保持~50%.

结论:

优化的C65比率和制造方法提高了LSB的电化学性能.
性能改善归因于增加的C-S键,优化的多孔性和均的微观结构.
开发的S/C复合材料和制造工艺显示了可扩展的LSB商业化.

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

Preparation of Graphene Liquid Cells for the Observation of Lithium-ion Battery Material

Preparation of Graphene Liquid Cells for the Observation of Lithium-ion Battery Material

Published on: February 5, 2019

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...