期刊
ADVANCED MATERIALS
卷 30, 期 9, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.201705830
关键词
lithiophilic materials; lithium metal anodes; lithium nucleation overpotential
类别
资金
- Hong Kong Research Grants Council [CityU 11216815, CityU 11338016]
- Shenzhen Science and Technology Innovation Council [JCYJ20160428154522334]
- National Nature Science Foundation of China [NSFC 51672230]
- General Research Fund [CityU 11338516]
Metallic lithium (Li) is a promising anode material for next-generation rechargeable batteries. However, the dendrite growth of Li and repeated formation of solid electrolyte interface during Li plating and stripping result in low Coulombic efficiency, internal short circuits, and capacity decay, hampering its practical application. In the development of stable Li metal anode, the current collector is recognized as a critical component to regulate Li plating. In this work, a lithiophilic Cu-CuO-Ni hybrid structure is synthesized as a current collector for Li metal anodes. The low overpotential of CuO for Li nucleation and the uniform Li+ ion flux induced by the formation of Cu nanowire arrays enable effective suppression of the growth of Li dendrites. Moreover, the surface Cu layer can act as a protective layer to enhance structural durability of the hybrid structure in long-term running. As a result, the Cu-CuO-Ni hybrid structure achieves a Coulombic efficiency above 95% for more than 250 cycles at a current density of 1 mA cm(-2) and 580 h (290 cycles) stable repeated Li plating and stripping in a symmetric cell.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据