Issue 6, 2019

Rationally assembled rGO/Sn/Na2Zr(PO4)2 nanocomposites as high performance anode materials for lithium and sodium ion batteries

Abstract

Zr(HPO4)2 is a promising anode material for secondary batteries due to its intrinsic layered structure. However, poor electronic conductivity and low coulombic efficiency hinder its practical application. To overcome those disadvantages, Sn/Na2Zr(PO4)2 composites were obtained by one-pot ion exchange and further wrapped with reduced graphene oxide (rGO) sheets to form rGO/Sn/Na2Zr(PO4)2 ternary composites with a three-dimensional network structure. The ternary composites exhibited enhanced reversible capacity and rate capability, which can be attributed to the structural and physical properties of each component. It was found that the large interlayer space of Na2Zr(PO4)2, the ability of Sn to form alloys with lithium, and the intrinsic ultra-large specific surface of the reduced graphene oxide sheets together afford the ternary composites with high specific capacity for lithium and sodium storage. The electron and ion conductivities of Sn and reduced graphene oxide, and the three-dimensional network of the composites provide the ternary composites with great rate capabilities. In addition, the reduced graphene oxide sheets in the ternary composites can effectively improve the electrochemical kinetic properties. Furthermore, the overall electrochemical properties of the rGO/Sn/Na2Zr(PO4)2 ternary composites can be tuned by varying the ratios of the three components.

Graphical abstract: Rationally assembled rGO/Sn/Na2Zr(PO4)2 nanocomposites as high performance anode materials for lithium and sodium ion batteries

Supplementary files

Article information

Article type
Paper
Submitted
12 Mar 2019
Accepted
11 Apr 2019
First published
12 Apr 2019

Sustainable Energy Fuels, 2019,3, 1509-1516

Rationally assembled rGO/Sn/Na2Zr(PO4)2 nanocomposites as high performance anode materials for lithium and sodium ion batteries

M. Ma, W. Shen, J. Zhang and S. Guo, Sustainable Energy Fuels, 2019, 3, 1509 DOI: 10.1039/C9SE00158A

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements