阳极
石墨烯
法拉第效率
材料科学
杰纳斯
金属锂
剥离(纤维)
极化(电化学)
电镀(地质)
化学工程
枝晶(数学)
基质(水族馆)
纳米技术
金属
复合材料
电极
冶金
化学
物理化学
工程类
地质学
海洋学
数学
地球物理学
几何学
作者
Jingjing Ma,Jinlong Yang,Yuwei Zhao,Qianli Ma,Zhe Wang,Wei Qian,Bin Xia,Lun Li,Weihao Zeng,Junxin Chen,Hanwen Xu,Shuaishuai Chen,Daping He,Zhenbo Wang,Shichun Mu
标识
DOI:10.1016/j.cej.2021.133561
摘要
The dendrite growth and irreversibility of lithium (Li) metal anode seriously hinders the wide-scale application of high-energy–density rechargeable batteries. Here, we report a thin Janus-faced graphene substrate, consisting of lithiophilic-lithiophobic faces separately, for Li plating/stripping. The visualized analysis demonstrates that the unique Janus-faced graphene structure provides different lithiophilic sites and pore channels to steer the Li electrodeposition and suppress the dendrite growth. As expected, the Janus-faced graphene anode achieves long-term Li plating/stripping with high Coulombic efficiency, small polarization and stable cycling throughout the symmetry, asymmetry and LiFePO4 full cells. Such an encouraging strategy for reversible Li plating/stripping provides a promising way to design long-life carbon-base anode materials for Li metal batteries.
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