Polymer lithium-garnet interphase for an all-solid-state rechargeable battery

Weidong Zhou, Ye Zhu, Nicholas Grundish, Xin Sen Xin, Shaofei Wang, Ya You, Nan Wu, Jian Gao, Zhiming Cui, Yutao Li, John B. Goodenough

Research output: Journal article publicationJournal articleAcademic researchpeer-review

42 Citations (Scopus)

Abstract

Garnet electrolytes having a room-temperature Li+ conductivity of 10−3 S cm−1 suffer from adsorbents that prevent wetting by a lithium anode; formation and growth of lithium-anode dendrites into grain boundaries and a huge interfacial resistance to anode plating and stripping result. A thin coating of a garnet surface by a Li+-conducting polymer with a transfer number of 0.9 is shown to suppress dendrite formation and to reduce greatly the interfacial resistance. A coulombic efficiency near 100% with a single thin polymer coat can provide Li/garnet/LiFePO4 all-solid-state cell with a long cycle life.

Original languageEnglish
Pages (from-to)926-931
Number of pages6
JournalNano Energy
Volume53
DOIs
Publication statusPublished - Nov 2018

Keywords

  • Cycle life
  • Garnet electrolyte
  • Lithium rechargeable batteries
  • Polymer interphase

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)
  • Electrical and Electronic Engineering

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