二维碳化的电离子间隙和高体积电容
Maria R Lukatskaya1, Olha Mashtalir, Chang E Ren
1Department of Materials Science and Engineering, Drexel University, Philadelphia, PA 19104, USA.
Science (New York, N.Y.)
|September 28, 2013
概括
二维 (2D) Ti3C2 MXene 层自发地从水溶液中插入各种. 这一发现增强了超越离子技术的储能潜力,为多价离子提供了高容量.
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
- 纳米技术 纳米技术
背景情况:
- 分层材料对于电池和电容器等储能设备至关重要.
- 现有的宿主材料在容纳比更大的离子方面是有限的.
- 二维 (2D) Ti3C2 MXene由于其独特的结构和表面特性,提供了一个有前途的替代方案.
研究的目的:
- 为了研究各种离子体在2D Ti3C2 MXene 层中的介质.
- 探索MXenes作为超越离子储能的主体材料的潜力.
- 为了评估MXenes与不同类型离子的电化学性能.
主要方法:
- 来自水盐溶液的Ti3C2 MXene层中自发的阴离子介质的证明.
- 各种离子的电化学互,包括Na(+),K(+),NH4(+),Mg(2+) 和Al(3+).
- 容量测量用于量化储能性能.
主要成果:
- 成功地自发地将多种离子结成2D Ti3C2 MXene.
- 对单和多价离子实现了电化学互.
- 电容度超过300 F/cm3,明显高于多孔碳.
结论:
- 2D Ti3C2 MXene是一种多用途的宿主材料,用于广泛的离子,包括多价离子.
- 与传统的多孔碳相比,MXenes提供了优越的电化学能量储存能力.
- 这项研究为开发使用MXenes和相关二维材料的先进能量存储设备开辟了新的途径.
相关概念视频
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