MoO2 and graphene heterostructure as promising flexible anodes for lithium-ion batteries
MoO2 and graphene heterostructure as promising flexible anodes for lithium-ion batteries
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MoO2和石墨烯异质结构作为锂离子电池的有前途的柔性阳极
DOI：
10.1016/j.carbon.2019.03.006
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发表时间：
2019-06-01
期刊：
影响因子：
10.9
通讯作者：
Quhe, Ruge
中科院分区：
文献类型：
--
作者：
Ma, Jiachen;Fu, Jia;Quhe, Ruge
二维货车德瓦耳斯异质结构在制造具有大能量密度、大功率密度和长循环寿命的锂离子电池方面具有巨大的前景。在这项工作中，我们研究了MoO 2/石墨烯异质结构作为锂离子电池的阳极的第一性原理计算。发现MoO 2/石墨烯异质结构具有增强的导电性、高的理论比容量（1411 mAh.g（-1））和小的扩散势垒（77 meV）。同时，石墨烯的柔性消除了MoO 2在充放电过程中的不可逆变形。这些特性使得MoO 2/石墨烯异质结构具有稳定且有效的Li离子存储性能。(C)2019爱思唯尔有限公司版权所有。
Two-dimensional van der Waals heterostructures hold great promise to create lithium-ion batteries with large energy density, large power density, and long cycle life. In this work, we investigate the MoO2/graphene heterostructure as anodes for lithium-ion batteries by first principles calculations. It is found that the MoO2/graphene heterostructure possesses enhanced electrical conductivity, high theoretical specific capacity (1411 mAh.g(-1)), and small diffusion barriers (77 meV). Meanwhile, the flexibility of graphene eliminates the irreversible deformation of MoO2 during the charge-discharge process. These characteristics render the MoO2/graphene heterostructure a stable and efficient Li ion storage performance. (C) 2019 Elsevier Ltd. All rights reserved.