Jump to main content
Jump to site search
PLANNED MAINTENANCE Close the message box

Scheduled maintenance work on Wednesday 27th March 2019 from 11:00 AM to 1:00 PM (GMT).

During this time our website performance may be temporarily affected. We apologise for any inconvenience this might cause and thank you for your patience.


Issue 27, 2018
Previous Article Next Article

Ionic activation via a hybrid IL–SSE interfacial layer for Li–O2 batteries with 99.5% coulombic efficiency

Author affiliations

Abstract

The open to the atmosphere nature of lithium–O2 batteries provides them with an inexhaustible supply of oxygen, resulting in them having a high specific energy, but this is a double-edged sword, as it also brings about the potential for explosion and drying out. Ionic liquids (IL) and solid-state electrolytes (SSE) are the most reliable systems in terms of avoiding these issues because they have near-zero vapor pressure and are generally non-flammable. However, no ILs or SSE lithium–O2 batteries have been operated under full discharge–charge conditions so far, that is, cycling the cells as a potential-controlled model. Herein, a lithium–O2 battery comprising an ether-functionalized ammonium IL electrolyte and carbon-free RuO2 cathode is reported, which has an average coulombic efficiency of 99.2% during repeated cycling. Furthermore, by incorporating a solid-state Li1.5Al0.5Ge1.5(PO4)3 (LAGP) film onto the Li metal anode, an in situ hybrid IL–SSE interfacial layer was formed, achieving 99.5% coulombic efficiency and significantly improving the battery cycleability over 100 cycles. The organic–inorganic hybrid layer exhibits ionic activation behavior through a dispersing redistribution and bridging process, revealing the beneficial interaction of IL and SSE on the cycling in safe IL–SSE-based Li–O2 batteries.

Graphical abstract: Ionic activation via a hybrid IL–SSE interfacial layer for Li–O2 batteries with 99.5% coulombic efficiency

Back to tab navigation

Supplementary files

Publication details

The article was received on 20 Mar 2018, accepted on 17 Apr 2018 and first published on 19 Apr 2018


Article type: Communication
DOI: 10.1039/C8TA02575D
Citation: J. Mater. Chem. A, 2018,6, 12945-12949

  •   Request permissions

    Ionic activation via a hybrid IL–SSE interfacial layer for Li–O2 batteries with 99.5% coulombic efficiency

    X. Zhang, Z. Wen and T. Zhang, J. Mater. Chem. A, 2018, 6, 12945
    DOI: 10.1039/C8TA02575D

Search articles by author

Spotlight

Advertisements