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为高性能Li-S电池轻量化多功能中间层的简单制备

Yuan Lei¹, Zhenyu Zhang¹, Zhan Lin¹

¹School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China. c.chen@gdut.edu.cn.

Dalton transactions (Cambridge, England : 2003)

|February 19, 2024

概括

一个轻量级的富含的纳米多孔碳/石墨烯介层有效地抑制了-硫 (Li-S) 电池中的聚硫化物穿. 这提高了能量密度和电池性能,显示了实际应用的前景.

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:

功能间层对于减轻-硫 (Li-S) 电池中的穿效应至关重要.
当前的中间层经常遭受复杂的制造和高重负荷,对能量密度产生负面影响.

研究的目的:

为Li-S电池开发一种轻量级的多功能中间层,以提高性能和能量密度.
为了应对当前层间技术中材料准备和重量负载的挑战.

主要方法:

通过一种简单的方法合成含丰富的纳米孔碳/石墨烯 (NC/G) 复合物.
将NC/G复合材料制成轻质膜,用于作为电池中间层.
用NC/G间层对Li-S电池进行电化学测试.

主要成果:

由于丰富的位和纳米孔状结构,NC/G中间层有效地定和捕获聚硫化物.
石墨烯成分提供了一个优秀的导电网络,促进了硫氧化还原动力学.
由于NC/G的轻量化特性,减少了分离器负载,保持了电池的能量密度.
即使在超低NC/G负载 (0.08 mg cm−2) 时,也可以实现出色的电池性能.

结论:

开发的NC/G复合材料作为实用Li-S电池的有希望的多功能中间层.
这项工作为设计轻量级,高性能介层提供了战略指导.
简单的合成和低重量负载使这种方法适合可扩展的应用.

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