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Issue 12, 2017
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Lithium-ion storage properties of a micro/nanosheet-like NaV6O15 anode in aqueous solution

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Abstract

The micromorphologies of NaV6O15 materials synthesized using the hydrothermal method and calcination comprise staggered micro/nanosheet-like shapes. These materials can act as anode active materials in aqueous rechargeable lithium-ion batteries (ARLBs). NaV6O15 has a charge transfer resistance of several ohms in the ARLB, which is an order of magnitude smaller than in traditional lithium-ion batteries. The lithium-ion diffusion coefficients at 0.15, −0.21 and −0.65 V vs. saturated calomel electrode (SCE) were calculated as 7.3 × 10−9, 3 × 10−12, 7.6 × 10−11 cm2 s−1, respectively, from the Warburg spectrum, which were three orders of magnitude larger than in conventional lithium-ion batteries. Furthermore, NaV6O15 materials used in this ARLB have a high energy density of about 134.9 Wh kg−1 at a power of 640 W kg−1. In contrast to traditional LIB behavior, we found that the capacity retention and coulombic efficiency of the as-synthesized materials increased with the increasing ARLB discharge current density, which showed potential for this new ARLB system to be applied in the field of large-scale energy storage and power source devices.

Graphical abstract: Lithium-ion storage properties of a micro/nanosheet-like NaV6O15 anode in aqueous solution

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Publication details

The article was received on 17 Jan 2017, accepted on 31 Jan 2017, published on 31 Jan 2017 and first published online on 31 Jan 2017


Article type: Paper
DOI: 10.1039/C7DT00199A
Citation: Dalton Trans., 2017,46, 3857-3863
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    Lithium-ion storage properties of a micro/nanosheet-like NaV6O15 anode in aqueous solution

    M. Zhao, W. Zhang and X. Song, Dalton Trans., 2017, 46, 3857
    DOI: 10.1039/C7DT00199A

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