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Issue 27, 2018
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Preparation of Sb nanoparticles in molten salt and their potassium storage performance and mechanism

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Abstract

Sb nanoparticles with a size of 55 nm are fabricated via the reduction of SbCl3 by metallic Al in the molten salt of SbCl3 at 80 °C. In situ XRD patterns and ex situ Raman spectra show that the potassium storage mechanism is an alloying-type with the formation of a cubic K3Sb phase when fully potassiated and an amorphous phase when fully depotassiated. As an anode for potassium-ion batteries, Sb nanoparticles coated with graphene could deliver a reversible capacity of 381 mA h g−1 at 100 mA g−1, and maintain a capacity of 210 mA h g−1 at 500 mA g−1 for 200 cycles.

Graphical abstract: Preparation of Sb nanoparticles in molten salt and their potassium storage performance and mechanism

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Publication details

The article was received on 11 May 2018, accepted on 21 Jun 2018 and first published on 22 Jun 2018


Article type: Paper
DOI: 10.1039/C8NR03829E
Citation: Nanoscale, 2018,10, 13236-13241
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    Preparation of Sb nanoparticles in molten salt and their potassium storage performance and mechanism

    Z. Yi, N. Lin, W. Zhang, W. Wang, Y. Zhu and Y. Qian, Nanoscale, 2018, 10, 13236
    DOI: 10.1039/C8NR03829E

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