Electrolytes Polymerization-Induced Cathode-Electrolyte-Interphase for High Voltage Lithium-Ion Batteries

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

3 Scopus Citations
View graph of relations

Author(s)

  • Jixiang Yang
  • Xiang Liu
  • Yian Wang
  • Xinwei Zhou
  • Lutao Weng
  • Yuzi Liu
  • Chen Zhao
  • Mouad Dahbi
  • Jones Alami
  • Deia Abd Ei-Hady
  • Gui-Liang Xu
  • Khalil Amine
  • Minhua Shao

Detail(s)

Original languageEnglish
Article number2101956
Journal / PublicationAdvanced Energy Materials
Volume11
Issue number39
Online published12 Sep 2021
Publication statusPublished - 21 Oct 2021
Externally publishedYes

Abstract

Lithium-ion batteries (LIBs) based on LiNixCoyMn1-x-yO2 (NCM) cathode materials have been widely commercialized, because of their high energy density, favorable rate performance, and relatively low cost. However, with increased Ni content to further increase their energy density, their cycling stability deteriorates dramatically and thus fails to meet the commercial application requirements. The artificial cathode-electrolyte-interphase (CEI) is a promising approach to solve this problem. Here, a robust CEI is fabricated through in situ polymerization of ethylene carbonate induced by aluminum isopropoxide (AIP). By adding 1 wt.% AIP in a commercial electrolyte, the capacity retention of LiNi0.8Co0.1Mn0.1O2||Li cell at 1 C rate has been significantly increased from 80.8% to 97.8% with a highly reversible capacity of 176 mA h g−1 after 200 cycles. AIP can be also used as an additive during the slurry-making process, enabling a reversible capacity of 170 mA h g−1 for LiCoO2 after 200 cycles even at a high charge cut-off voltage of 4.6 V. It is confirmed that the in situ formed CEI layer can prevent the cathodes from cracking and reduce the irreversible phase transformation.

Research Area(s)

  • aluminum isopropoxide, cathode-electrolyte-interphase, electrolyte additives, high voltage, layered oxide cathode

Citation Format(s)

Electrolytes Polymerization-Induced Cathode-Electrolyte-Interphase for High Voltage Lithium-Ion Batteries. / Yang, Jixiang; Liu, Xiang; Wang, Yian; Zhou, Xinwei; Weng, Lutao; Liu, Yuzi; Ren, Yang; Zhao, Chen; Dahbi, Mouad; Alami, Jones; Ei-Hady, Deia Abd; Xu, Gui-Liang; Amine, Khalil; Shao, Minhua.

In: Advanced Energy Materials, Vol. 11, No. 39, 2101956, 21.10.2021.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review