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六角MAB阶段Ti₂InB₂的缺陷工程作为离子电池的阳极,具有出色的循环稳定性

Qing Shen^1,2, Yang Shi², Yibo He^1,2

¹State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an, Shaanxi, 710072, P. R. China.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)

|March 16, 2024

概括

这项研究引入了一种新的方法,使用球磨来制造富含缺陷的Ti2InB2,用于增强的离子电池阳极. 由此产生的材料表现出卓越的循环稳定性和导电性,为可持续的能源存储铺平了道路.

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:

六角MAB (h-MAB) 阶段被探索用于皮成MBenes,类似于MXenes,用于离子电池应用.
MBenes的高合成成本阻碍了它们在电池技术中的广泛采用.
开发具有成本效益和可扩展的电极材料对于推进离子电池至关重要.

研究的目的:

从h-MAB阶段开发一种具有成本效益和可扩展的方法来合成高性能离子电池阳极.
调查诱导的缺陷对Ti2InB2.2的电化学性质的影响.
为了证明缺陷工程Ti2InB2的潜力,作为离子电池的可持续阳极材料.

主要方法:

使用简单的球磨处理来提高Ti2InB2的纯度,并引入缺陷 (VIn-Ti2InB2).
评估了电化学特性,包括长周期稳定性和导电性.
组装了一个离子全电池,以评估VIn-Ti2InB2阳极的实际性能.

主要成果:

球磨成功产生了具有显著缺陷的纯Ti2InB2相,改善了导电性和活性位点.
在高电流密度下,VIn-Ti2InB2表现出异常的长周期稳定性 (5A g-1用于5000个周期,10A g-1用于15000个周期).
为电荷储存提出了一种涉及In-Li合金形成和TiB层相互作用的双氧化还原反应机制.

结论:

缺陷工程Ti2InB2 (VIn-Ti2InB2) 为离子电池提供了一个有希望的,可扩展的和具有成本效益的阳极材料.
该研究强调了h-MAB阶段的潜力,作为下一代能源存储的可持续替代方案.
这项工作为通过缺陷工程在电化学应用中利用h-MAB材料开辟了新的途径.

关键词:

在Ti2InB2中阳极材料是一种阳极材料.缺陷工程是什么?缺陷工程是什么?在 h-MAB 中,离子电池是一种离子电池.

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