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在现场低温碳化封装LiFePO₄与焦炭,以提高电池性能

Fei Guo¹, Xiaoqi Huang¹, Yudong Li²

¹School of Electronic Engineering, Guangxi University of Science and Technology, Liuzhou 545006, China.

Molecules (Basel, Switzerland)

|August 26, 2023

概括

研究人员通过使用低温碳化来对铁 (LFP) 阴极涂上碳来改进电池. 这提高了循环稳定性和速率能力,以提高电池性能.

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
储能储能储能储能储能储能

背景情况:

铁酸盐 (LiFePO4或LFP) 是离子电池的主要阴极材料.
低FP具有较差的电子和离子导电性,这限制了其性能.
提高LFP导电性对于先进的电池应用至关重要.

研究的目的:

为了提高LFP阴极的电化学性能.
为了解决LFP材料的导电性限制.
开发一种具有成本效益的方法来提高电池的效率.

主要方法:

合成LiFePO4 /碳 (LFP / C) 复合材料.
使用可口可乐作为碳源的低温碳化涂层.
在电池中对LFP/C复合阴极进行电化学测试.

主要成果:

实现了高排放特异能力:在0.1°C时达到148.35mA·h/g,在1°C时达到126.74mA·h/g.
经过200个循环后,表现出极好的循环稳定性,容量保留率为93.74%和97.05%.
在不同速度循环后显示出99.27%的容量保留.

结论:

在现场低温碳化中,用焦炭封顶LFP,有效地提高了循环稳定性.
开发的LFP/C复合材料表现出显著增强的速度能力.
这种方法为推进电池技术提供了一个有前途的战略.

关键词:

可口可乐可口可乐是什么意思 LiFePO4 的使用情况.碳涂层是一种碳涂层.电池是一种电池.超长周期寿命的超长周期寿命

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