Designing solvate ionogel electrolytes with very high room-temperature conductivity and lithium transference number

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

6 Scopus Citations
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Author(s)

  • Dion Hubble
  • Jiaxu Qin
  • Francis Lin
  • Ian A. Murphy
  • Sei-Hum Jang
  • Jihui Yang

Detail(s)

Original languageEnglish
Pages (from-to)24100-24106
Journal / PublicationJournal of Materials Chemistry A
Volume6
Issue number47
Online published21 Nov 2018
Publication statusPublished - 21 Dec 2018

Abstract

Free-standing electrolytes based on Li(G4)TFSI and chemically-crosslinked poly(ethylene glycol), as well as functional co-monomers and/or small amounts of volatile diluent, are demonstrated to reach very high room-temperature ionic conductivities (>2 × 10-3 S cm-1) and electrochemically-measured lithium transference numbers (>0.5). An unexpected dependence of properties on polymer length/crosslinking is observed and explained in terms of competing Li+ transport processes. These electrolytes enable lithium symmetric cells to cycle >600 h at low overpotential and without dendrite growth. Future optimization routes are also discussed.

Citation Format(s)

Designing solvate ionogel electrolytes with very high room-temperature conductivity and lithium transference number. / Hubble, Dion; Qin, Jiaxu; Lin, Francis; Murphy, Ian A.; Jang, Sei-Hum; Yang, Jihui; Jen, Alex K.-Y.

In: Journal of Materials Chemistry A, Vol. 6, No. 47, 21.12.2018, p. 24100-24106.

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