A 3D Nanostructured Hydrogel-Framework-Derived High-Performance Composite Polymer Lithium-Ion Electrolyte

Jiwoong Bae, Yutao Li, Jun Zhang, Xingyi Zhou, Fei Zhao, Ye Shi, John B. Goodenough, Guihua Yu*

*Corresponding author for this work

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Abstract

Solid-state electrolytes have emerged as a promising alternative to existing liquid electrolytes for next generation Li-ion batteries for better safety and stability. Of various types of solid electrolytes, composite polymer electrolytes exhibit acceptable Li-ion conductivity due to the interaction between nanofillers and polymer. Nevertheless, the agglomeration of nanofillers at high concentration has been a major obstacle for improving Li-ion conductivity. In this study, we designed a three-dimensional (3D) nanostructured hydrogel-derived Li0.35La0.55TiO3 (LLTO) framework, which was used as a 3D nanofiller for high-performance composite polymer Li-ion electrolyte. The systematic percolation study revealed that the pre-percolating structure of LLTO framework improved Li-ion conductivity to 8.8×10−5 S cm−1 at room temperature.

Original languageEnglish
Pages (from-to)2096-2100
Number of pages5
JournalAngewandte Chemie - International Edition
Volume57
Issue number8
DOIs
Publication statusPublished - 19 Feb 2018
Externally publishedYes

Keywords

  • composite electrolytes
  • hydrogels
  • lithium-ion conductors
  • percolation
  • solid electrolytes

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Bae, J., Li, Y., Zhang, J., Zhou, X., Zhao, F., Shi, Y., Goodenough, J. B., & Yu, G. (2018). A 3D Nanostructured Hydrogel-Framework-Derived High-Performance Composite Polymer Lithium-Ion Electrolyte. Angewandte Chemie - International Edition, 57(8), 2096-2100. https://doi.org/10.1002/anie.201710841