Journal
NANO ENERGY
Volume 39, Issue -, Pages 662-672Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.nanoen.2017.07.052
Keywords
Lithium metal anode; Lithium metal batteries; SEI; Protective layer; LiF
Categories
Funding
- Zhejiang Provincial Natural Science Foundation of China [Q17E020023]
- National Natural Science Foundation of China (NSFC) for the research fund for International Young Scientists [51650110490]
- National Natural Science Foundation of China [51502334, 51532002]
- U.S. Department of Energy (DOE) under the Advanced Battery Materials Research (BMR) program
- National Basic Research Program of China [2014CB921004]
Ask authors/readers for more resources
Although Li metal has been regarded as one of the most promising anode materials, an unstable Li/electrolyte interface during the cycling process seriously limits its practical application in rechargeable batteries. Herein, we report a transplantable LiF-rich layer (TLL) that can suppress the side reactions between electrolyte and lithium metal. This peelable layer cross-linked by nanoscale LiF domains is obtained by electrochemically reducing NiF2 electrodes and could be used to protect Li metal anodes. Cu-Li cells using the TLL protection can operate for more than 300 cycles with a Coulombic efficiency as high as similar to 98% in carbonate-based electrolytes. In Li-LiFePO4 cells, lithium metal with a TLL still looks shiny after 1000 cycles (similar to 6 months) in contrast to the black surface of bare lithium foil after similar to 500 cycles (similar to 3 months). These results clearly demonstrate that the TLL could greatly limit the side reactions between lithium metal and the carbonate-based electrolytes, and may enable long-term stable operation of Li metal batteries.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available