两个石墨烯板之间的可逆超密度排序
Matthias Kühne1,2, Felix Börrnert3, Sven Fecher1
1Max Planck Institute for Solid State Research, Stuttgart, Germany.
Nature
|November 28, 2018
概括
研究人员观察到原子在双层石墨烯中形成超密相,超过预期的存储容量. 这一发现揭示了用于先进的储能应用的二维材料中的结构.
科学领域:
- 材料科学
- 电化学
- 纳米技术
背景情况:
- 碳等离子体对于电化学能量储存至关重要,使得可逆吸收成为可能.
- 由于实验的局限性,了解宿主材料中的排列是具有挑战性的.
研究的目的:
- 在可逆间过程中研究两层石墨烯中的排列.
- 在二维材料中探索新的储存机制.
主要方法:
- 在位低压传输电子显微镜与偏差校正.
- 电子能量损失光谱
- 密度函数理论计算
主要成果:
- 原子在双层石墨烯板之间形成一个多层密集的秩序.
- 观察到的储能明显超过了LiC6的储能.
- 在二层石墨烯中发现超密度相.
结论:
- 与散装相比,二维材料中的储存可以表现出不同的安排.
- 双层石墨烯中的超密度相为增强能量储存提供了潜力.
- 这项研究促进了对层次纳米材料的离子介质的理解.
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