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可打印和自由站立的基于的阳极,用于当前无收集器的离子电池

Minjun Je¹, Mirim Ham², Sungho Kim¹

¹Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea.

ACS applied materials & interfaces

|October 25, 2023

概括

研究人员开发了一种可打印的,独立的基于的阳极,用于先进的离子电池. 这种含有MXene粘合剂的空心/碳复合材料提供了高能量密度和结构稳定性,无需电流收集器.

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:

传统的离子电池在能量密度和形状多样性方面面临限制.
基于 (Si) 的材料具有高能量密度,但在循环过程中遭受结构不稳定性和低导电性.
需要先进的阳极材料来克服下一代电池的这些局限性.

研究的目的:

为高性能离子电池开发一个完全可打印和独立的阳极.
为了应对基于的阳极的结构不稳定性和导电性的挑战.
探索空心Si / C复合材料和MXene结合剂的潜力,以提高电池性能和设计灵活性.

主要方法:

制造一个空洞的Si/C (H-SiO/C) 复合材料.
整合H-SiO/C与MXene导电结合剂,以创建一个独立的阳极.
验证阳极的性能和可打印性,使用模板印刷在硬币类型的全细胞和心形袋细胞.

主要成果:

H-SiO/C/MXene阳极表现出高的特定容量和结构可靠性.
空洞结构有效地适应了电化学循环期间的体积变化.
MXene粘合剂形成了一个3D导电网络,确保没有电流收集器的电极完整性,并提供卓越的离子导电性.

结论:

开发的可打印和独立的H-SiO/C/MXene阳极为先进的基于的阳极提供了一个有前途的解决方案.
这种方法提高了可打印电池系统的性能,结构完整性和设计灵活性.
该研究为实用,高能量密度和形状多样化的电池应用提供了基础.

关键词:

有复杂形状的电池.没有电流采集器的电极.一个独立的电极.可打印的电池可以打印.基于的阳极是以为基础的.

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