Jump to main content
Jump to site search

Issue 43, 2016
Previous Article Next Article

Hybrid solid electrolyte with the combination of Li7La3Zr2O12 ceramic and ionic liquid for high voltage pseudo-solid-state Li-ion batteries

Author affiliations

Abstract

Concerning the safety aspects of high-voltage Li-ion batteries, a pelletized hybrid solid electrolyte (HSE) was prepared by blending Li7La3Zr2O12 (LLZO) ceramic particles and an ionic liquid electrolyte (ILE) for use in pseudo-solid-state Li-ion batteries. The LLZO particles are enclosed by the ionic liquid as a LLZO–ILE matrix, and are quantified by FESEM elemental mapping. The chemical stability of the LLZO in the ILE is confirmed by powder XRD and FT-IR analysis. The HSE, with an optimized weight ratio of 80% LLZO, 19% Py14TFSI, and 1% lithium bis(trifluoromethanesulfonyl)imide, exhibits good thermal stability, even at 400 °C. The optimized HSE reveals an ionic conductivity of 0.4 × 10−3 S cm−1 and an electrochemical stability of 5.5 V with Li metal. Pseudo-solid-state Li-ion cells are fabricated using the HSE, and afford initial charge–discharge capacities of 140/130 mA h g−1 (Li/HSE/LiCoO2) with 99% capacity retention at the 150th cycle. The scope of the HSE is widened to high-voltage (>8 V) pseudo-solid-state Li-ion batteries through a bipolar stacked cell design. Dendrite formation is hindered during cycling in the Li-ion cell. Hence, the present investigation will greatly contribute to the next generation of high-voltage pseudo-solid-state Li-ion batteries.

Graphical abstract: Hybrid solid electrolyte with the combination of Li7La3Zr2O12 ceramic and ionic liquid for high voltage pseudo-solid-state Li-ion batteries

Back to tab navigation

Supplementary files

Publication details

The article was received on 24 Aug 2016, accepted on 27 Sep 2016 and first published on 30 Sep 2016


Article type: Paper
DOI: 10.1039/C6TA07268B
Citation: J. Mater. Chem. A, 2016,4, 17025-17032
  •   Request permissions

    Hybrid solid electrolyte with the combination of Li7La3Zr2O12 ceramic and ionic liquid for high voltage pseudo-solid-state Li-ion batteries

    H. W. Kim, P. Manikandan, Y. J. Lim, J. H. Kim, S. Nam and Y. Kim, J. Mater. Chem. A, 2016, 4, 17025
    DOI: 10.1039/C6TA07268B

Search articles by author

Spotlight

Advertisements