Dendrite inhibited and dead lithium activated dual-function additive for lithium metal batteries

  • Chem Commun (Camb). 2023 Sep 12;59(73):10996-10999. doi: 10.1039/d3cc03085g.
Erlei Zhang  1 ,  Huijie Tian  1 ,  Meng Li  1 ,  Shiru Le  1 ,  Bingjiang Li  2 ,  Lijun Wu  2 ,  Qixian Zhang  3 ,  Lishuang Fan  1  2
Affiliations
  • 1. School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, Heilongjiang, 150080, P. R. China. [email protected].
  • 2. Jiangsu Zhitai New Energy Technology Co., Ltd. Taizhou, Jiangsu, 225314, P. R. China.
  • 3. School of Materials Science and Engineering, Shanghai University, Shanghai, 200444, P. R. China.
PMID: 37615934 DOI: 10.1039/d3cc03085g
Abstract

In this study, 2-fluoro-5-iodopyridine (2-F-5-IPy) was used as an electrolyte additive, which can not only protect the negative electrode effectively by forming a stable SEI, but also convert dead lithium into active lithium. Benefits from this are a capacity retention of a Li‖LiFePO4 cell after 300 cycles from 36.5% to 89.4%, and the symmetrical cell can work stably for more than 800 hours. Therefore, the addition of 2-F-5-IPy can effectively improve the performance of lithium metal batteries.

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