Two-Dimensional Y2C Electride: A Promising Anode Material for Na-Ion Batteries

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• 作者：Jianhua Hou ; Kaixiong Tu ; Zhongfang Chen
• 刊名：Journal of Physical Chemistry C
• 出版年：2016
• 出版时间：August 25, 2016
• 年：2016
• 卷：120
• 期：33
• 页码：18473-18478
• 全文大小：425K
• 年卷期：0
• ISSN：1932-7455

文摘

By means of first-principles computations, we explored the potential of using Y₂C monolayer as anode material for rechargeable Na-ion batteries (NIBs). As a two-dimensional electride material, Y₂C monolayer is metallic and has a strong in-plane stiffness. Significant interactions between Y₂C monolayer and Na atom ensure its high theoretical specific capacity of 564 mA·h/g. The Y₂C monolayer also has high Na mobility and rather small average open-circuit voltages. All these characteristics suggest that the Y₂C monolayer could be a promising anode material for NIBs.