@article{Meng2019, 
author = {Qianqian Meng and Huimin Zhang and Yue Liu and Shaobo Huang and Tianzhu Zhou and Xiaofei Yang and Biyan Wang and Wenfeng Zhang and Hai Ming and Yu Xiang and Meng Li and Gaoping Cao and Yaqin Huang and Li-zhen Fan and Hao Zhang and Yuepeng Guan},
title = {A scalable bio-inspired polydopamine-Cu ion interfacial layer for high-performance lithium metal anode},
year = {2019},
journal = {Nano Research},
volume = {12},
number = {12},
pages = {2919-2924},
keywords = {lithium metal anode, polydopamine, Cu ions, interfacial layer},
url = {https://www.sciopen.com/article/10.1007/s12274-019-2519-0},
doi = {10.1007/s12274-019-2519-0},
abstract = {The growth of Li dendrites and the instability of the solid electrolyte interphase (SEI) layer during plating/stripping has hindered the practical application of high-energy-density batteries based on a lithium metal anode. Building a stable interfacial layer is effective in preventing lithium corrosion by the electrolyte and controlling the deposition of lithium metal. Here, we present a robust polydopamine-Cu ion (PDA-Cu2+) coating layer formed by the aggregation of nanoparticles and Cu ions, which can be obtained by a subtle immersion strategy. We demonstrate that the PDA-Cu2+ protective layer, with a unique structure comprising nanoparticles, can regulate and guide Li metal deposition, and together with Cu ions, forms a lubricating surface to facilitate uniform Li ion diffusion and induce stable SEI layer formation. Li anodes with this PDA-Cu2+ layer modification ultimately achieve higher Coulombic efficiencies, which are consistently stable for over 650 cycles at 0.5 mA·cm-2 without Li dendrites. The introduced PDA-Cu2+ coating can adhere to any material of any shape; additionally, the operation can be realized on a large scale because of its simplicity. These merits provide a promising approach for developing stable and safe lithium metal batteries.}
}