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Issue 2, 2016
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Significant enhancement of the cycling performance and rate capability of the P/C composite via chemical bonding (P–C)

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Abstract

Among anode materials for sodium ion batteries, red phosphorus is a very promising one due to its abundant reserves, low-cost and high theoretical capacity of 2600 mA h g−1. However, its huge volume expansion on sodiation (∼490%) and poor conductivity leads to dramatic capacity decay, restraining its practical application. To improve the electrochemical performance, here, we prepared a red phosphorus and graphene nanoplate composite using cheap red P and natural graphite as the starting materials via a simple and scalable ball-milling method. The phosphorus–carbon bond formed during the milling process improves the electrical connectivity between P particles and graphene nanoplates, consequently stabilizing the structure of the composite to achieve high cycling performance and rate capability. As a result, the red phosphorus and graphene nanoplate composite delivered a high reversible capacity of 1146 mA h g−1 (calculated on the basis of the composite mass) at a current density of 100 mA g−1 and an excellent cycling stability of 200 cycles with 92.5% capacity retention.

Graphical abstract: Significant enhancement of the cycling performance and rate capability of the P/C composite via chemical bonding (P–C)

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Publication details

The article was received on 26 Oct 2015, accepted on 13 Nov 2015 and first published on 13 Nov 2015


Article type: Paper
DOI: 10.1039/C5TA08590J
Citation: J. Mater. Chem. A, 2016,4, 505-511
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    Significant enhancement of the cycling performance and rate capability of the P/C composite via chemical bonding (P–C)

    W. Li, S. Chou, J. Wang, H. Liu and S. Dou, J. Mater. Chem. A, 2016, 4, 505
    DOI: 10.1039/C5TA08590J

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