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Issue 11, 2015
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A soil/Vulcan XC-72 hybrid as a highly-effective catalytic cathode for rechargeable Li–O2 batteries

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Abstract

We report for the first time a hybrid of soil and commercial Vulcan XC-72 carbon (labeled as soil/C) as a high-performance cathode catalyst for rechargeable lithium–oxygen batteries. A one-step mixing at room temperature is used to synthesize the soil/C hybrid, in which soil particles (0.5–5 μm) play a role of void volume expanders (VVE) so that the Vulcan XC-72 carbon (∼100 nm) area is fully exposed for the deposition of the discharge product. Meanwhile, the outer & inner catalytic sites of carbon particles are sufficiently utilized. When used as a cathode catalyst for rechargeable lithium–oxygen batteries, the soil/C hybrid exhibits a large discharge capacity (7640 mA h g−1), robust cyclability (100 cycles at 0.2 mA cm−2) and superior rate capability. This high performance is not inferior to noble metal containing catalysts. Therefore, soil as a low cost and metal-free VVE in the soil/C hybrid catalyst is promising in the application of rechargeable Li–O2 batteries.

Graphical abstract: A soil/Vulcan XC-72 hybrid as a highly-effective catalytic cathode for rechargeable Li–O2 batteries

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Publication details

The article was received on 13 Aug 2015, accepted on 09 Sep 2015 and first published on 10 Sep 2015


Article type: Research Article
DOI: 10.1039/C5QI00149H
Citation: Inorg. Chem. Front., 2015,2, 1006-1010
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    A soil/Vulcan XC-72 hybrid as a highly-effective catalytic cathode for rechargeable Li–O2 batteries

    X. Hu, X. Fu and J. Chen, Inorg. Chem. Front., 2015, 2, 1006
    DOI: 10.1039/C5QI00149H

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