Issue 30, 2017

Nanoporous carbon leading to the high performance of a Na3V2O2(PO4)2F@carbon/graphene cathode in a sodium ion battery

Abstract

The Na3V2O2(PO4)2F/graphene sandwich cathode has attracted great attention as a potential candidate for sodium-ion batteries in view of its high capacity and good cycling ability. However, a big issue for Na3V2O2(PO4)2F/graphene is its extremely poor electronic conductivity due to the multilayer structure in which Na3V2O2(PO4)2F particles are located between the graphene layers. We introduced carbon in the Na3V2O2(PO4)2F/graphene sandwich to form a 3D architecture – Na3V2O2(PO4)2F@carbon/graphene (NVPF@C/G). A battery with the NVPF@C/G cathode presents good electrochemical properties, a high capacity, 135.8 mAh g−1 at 0.1C, with a capacity retention of 96.8% at 2C for fifty cycles. NVPF@C/G showed obvious advantage in the rate performance and cycle stability compared with the NVPF/G sandwich, which indicated that the nanoporous carbon integrated in the 3D structure plays a crucial role in improving the electrochemical performance. It is anticipated that such a new method of introducing nanoporous carbon for battery performance enhancement can be extended to other graphene-based sandwich structure electrodes.

Graphical abstract: Nanoporous carbon leading to the high performance of a Na3V2O2(PO4)2F@carbon/graphene cathode in a sodium ion battery

Supplementary files

Article information

Article type
Paper
Submitted
19 Apr 2017
Accepted
19 Jun 2017
First published
20 Jun 2017

CrystEngComm, 2017,19, 4287-4293

Nanoporous carbon leading to the high performance of a Na3V2O2(PO4)2F@carbon/graphene cathode in a sodium ion battery

H. Jin, M. Liu, E. Uchaker, J. Dong, Q. Zhang, S. Hou, J. Li and G. Cao, CrystEngComm, 2017, 19, 4287 DOI: 10.1039/C7CE00726D

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