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Issue 7, 2017
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Constructing metal-anode rechargeable batteries utilizing concomitant intercalation of Li–Mg dual cations into Mo6S8

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Abstract

Li–Mg dual-salt batteries (DSBs) have attracted growing attention, because a novel way to construct high-energy density DSBs is to take advantage of respective carrier cations. However, previous studies on Li–Mg DSBs have been almost limited to Daniell-type batteries, not attaining rocking-chair-type batteries with high-energy densities. In this work, we show experimentally that concomitant intercalation of Li and Mg ions into the Chevrel compound Mo6S8 in almost equal proportions can occur when discharging in a LiTFSA–Mg(TFSA)2/triglyme(G3) electrolyte. By exploiting this feature, we confirmed with two-electrode coin cells that non-dendritic electrodeposition morphology is available after charge. This work indicates the feasibility of room-temperature rocking-chair-type dual-salt batteries, which provides a new strategy for future safe “metal-anode” rechargeable batteries with high energy densities.

Graphical abstract: Constructing metal-anode rechargeable batteries utilizing concomitant intercalation of Li–Mg dual cations into Mo6S8

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Publication details

The article was received on 12 Dec 2016, accepted on 17 Jan 2017 and first published on 17 Jan 2017


Article type: Paper
DOI: 10.1039/C6TA10663C
J. Mater. Chem. A, 2017,5, 3534-3540

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    Constructing metal-anode rechargeable batteries utilizing concomitant intercalation of Li–Mg dual cations into Mo6S8

    H. Li, T. Ichitsubo, S. Yagi and E. Matsubara, J. Mater. Chem. A, 2017, 5, 3534
    DOI: 10.1039/C6TA10663C

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