CuS2 sheets: a hidden anode material with a high capacity for sodium-ion batteries,Journal of Materials Chemistry C

当前位置： X-MOL 学术 › J. Mater. Chem. C › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

CuS2 sheets: a hidden anode material with a high capacity for sodium-ion batteries
Journal of Materials Chemistry C ( IF 5.7 ) Pub Date : 2020-12-10 , DOI: 10.1039/d0tc04946h
Shaohua Lu _{1,

2,

3} , Weidong Hu _{1,

2,

3} , Xiaojun Hu _{1,

2,

3}

Affiliation

Due to their low cost and improved safety compared to lithium-ion batteries, sodium-ion batteries have attracted worldwide attention in recent decades. In this work, a hitherto unknown two-dimensional phase of copper disulfide (α-CuS₂) is proposed. First-principles calculations reveal that the proposed monolayer is both statically and dynamically stable. The calculated Na storage capacity reaches up to 841 mA h g⁻¹ and the diffusion energy barrier is only 0.2 eV. Furthermore, we propose a plausible massive synthesis route, which is through mechanical or chemical exfoliation from its bulk counterpart. Our results indicate that the proposed α-CuS₂ monolayer is a promising anode material for sodium-ion batteries.

中文翻译：

CuS2薄板：一种用于钠离子电池的高容量隐藏阳极材料

与锂离子电池相比，由于钠离子电池的低成本和更高的安全性，近几十年来，钠离子电池已引起全球关注。在这项工作中，二硫化铜的迄今未知的二维相（α-的CuS ₂）提出。第一性原理计算表明，提出的单层结构既静态又动态稳定。计算出的Na储存容量达到841 mA hg ^-1，扩散能垒仅为0.2 eV。此外，我们提出了一条可行的大规模合成路线，该路线是通过机械或化学方式从其本体上剥离。我们的结果表明，所提出的α-的CuS ₂单层为钠离子电池有前途的阳极材料。

更新日期：2021-01-05

点击分享查看原文

点击收藏

阅读更多本刊新发论文本刊介绍/投稿指南