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Issue 15, 2019
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MoP hollow nanospheres encapsulated in 3D reduced graphene oxide networks as high rate and ultralong cycle performance anodes for sodium-ion batteries

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Abstract

Molybdenum phosphide (MoP), regarded as a promising anode material for sodium-ion batteries due to its superior conductivity and high theoretical specific capacity, still suffers from rapid capacity decay because of a large volume change and weak diffusion kinetics. Hollow nano-structures will be an effective solution to alleviate structural strain and improve cycling stability. Yet the preparation of MoP needs a high temperature phosphorization procedure which would cause agglomeration and structure collapse, making it difficult to achieve hollow nano-structures. Herein, caged by 3D graphene networks, MoP hollow nanospheres encapsulated in 3D reduced graphene oxide networks (H-MoP@rGO) were prepared successfully, and benefiting from the merits of the hollow nano-structure and flexibility of rGO, H-MoP@rGO demonstrates a superior cycle performance of 353.8 mA h g−1 at 1 A g−1 after 600 cycles and an extraordinary rate performance of 183.4 mA h g−1 at an ultrahigh current density of 10 A g−1 even after 3000 cycles.

Graphical abstract: MoP hollow nanospheres encapsulated in 3D reduced graphene oxide networks as high rate and ultralong cycle performance anodes for sodium-ion batteries

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Publication details

The article was received on 14 Jan 2019, accepted on 19 Mar 2019 and first published on 20 Mar 2019


Article type: Communication
DOI: 10.1039/C9NR00406H
Nanoscale, 2019,11, 7129-7134

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    MoP hollow nanospheres encapsulated in 3D reduced graphene oxide networks as high rate and ultralong cycle performance anodes for sodium-ion batteries

    Y. Yin, L. Fan, Y. Zhang, N. Liu, N. Zhang and K. Sun, Nanoscale, 2019, 11, 7129
    DOI: 10.1039/C9NR00406H

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