Deakin University
Browse
wang-aporous3d-2019.pdf (1.94 MB)

A porous 3D-RGOatMWCNT hybrid material as Li-S battery cathode

Download (1.94 MB)
journal contribution
posted on 2019-01-01, 00:00 authored by Y Zhang, J Ren, Y Zhao, T Tan, F Yin, Yichao Wang
In this work, a unique three-dimensional (3D) structured carbon-based composite was synthesized. In the composite, multiwalled carbon nanotubes (MWCNT) form a lattice matrix in which porous spherical reduced graphene oxide (RGO) completes the 3D structure. When used in Li–S batteries, the 3D porous lattice matrix not only accommodates a high content of sulfur, but also induces a confinement effect towards polysulfide, and thereby reduces the “shuttle effect”. The as-prepared S-3D-RGO@MWCNT composite delivers an initial specific capacity of 1102 mAh·g−1. After 200 charging/discharge cycles, a capacity of 805 mAh·g−1 and a coulombic efficiency of 98% were maintained, implying the shuttle effect was greatly suppressed by the composite matrix. In addition, the S-3D-RGO@MWCNT composite also exhibits an excellent rate capability.

History

Journal

Beilstein Journal of Nanotechnology

Volume

10

Pagination

514 - 521

Publisher

Beilstein-Institut zur Förderung der Chemischen Wissenschaften

Location

Frankfurt, Germany

ISSN

2190-4286

eISSN

2190-4286

Language

English

Publication classification

C1.1 Refereed article in a scholarly journal