Synergetic Effects of Inorganic Components in Solid Electrolyte Interphase on High Cycle Efficiency of Lithium Ion Batteries

Qinglin Zhang, Jie Pan, Peng Lu, Zhongyi Liu, Mark W. Verbrugge, Brian W. Sheldon, Yang Tse Cheng, Yue Qi, Xingcheng Xiao

Research output: Contribution to journalArticlepeer-review

288 Scopus citations


The solid electrolyte interphase (SEI), a passivation layer formed on electrodes, is critical to battery performance and durability. The inorganic components in SEI, including lithium carbonate (Li2CO3) and lithium fluoride (LiF), provide both mechanical and chemical protection, meanwhile control lithium ion transport. Although both Li2CO3 and LiF have relatively low ionic conductivity, we found, surprisingly, that the contact between Li2CO3 and LiF can promote space charge accumulation along their interfaces, which generates a higher ionic carrier concentration and significantly improves lithium ion transport and reduces electron leakage. The synergetic effect of the two inorganic components leads to high current efficiency and long cycle stability.

Original languageEnglish
Pages (from-to)2011-2016
Number of pages6
JournalNano Letters
Issue number3
StatePublished - Mar 9 2016

Bibliographical note

Funding Information:
The authors acknowledge the support by the Assistant Secretary for Energy Efficiency and Renewable Energy, Vehicle Technologies Office of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231, Subcontract No. 7056410 under the Batteries for Battery Materials Research (BMR) Program. Q.Z. is grateful for General Motors'' summer internship program. Partial Financial support from National Science Foundation (Award Number 1355438, Powering the Kentucky Bioeconomy for a Sustainable Future) is also gratefully acknowledged. The authors thank Dr. Nicolas J. Briot and Dr. Dali Qian in the Electron Microscopy Center of University of Kentucky for the TEM figures. J.P. and Y.T.C. acknowledge the hardware support from Center for Computational Sciences in University of Kentucky.

Publisher Copyright:
© 2016 American Chemical Society.


  • LiF/LiCO interface
  • Lithium ion batteries
  • electron leakage
  • ionic conduction
  • solid electrolyte interphase
  • space charge

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry (all)
  • Materials Science (all)
  • Condensed Matter Physics
  • Mechanical Engineering


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