Issue 11, 2013

The examination of graphene oxide for rechargeable lithium storage as a novel cathode material

Abstract

A sustainable cathode is critical to developing green lithium storage devices. Conducting polymers, radical polymers and carbonyl-based polymers are the three most important types of polymer-based sustainable cathode materials. Here we report that graphene oxide enriched with epoxide, without being reduced, is a promising sustainable carbonaceous cathode material for rechargeable lithium storage. Graphene oxide containing a large quantity of epoxide can have a high capacity of 360.4 mA h g−1 at 50 mA g−1, which significantly surpasses those of many polymer cathodes and conventional lithium-transition metal oxide cathodes. The good stability of this epoxide-based cathode was demonstrated. Density functional theory calculations indicate that the lithiation of epoxide is energetically favorable (−1.21 eV) and the original epoxide structure can be restored after delithiation with a small barrier (0.23 eV).

Graphical abstract: The examination of graphene oxide for rechargeable lithium storage as a novel cathode material

Associated articles

Supplementary files

Article information

Article type
Paper
Submitted
27 Dec 2012
Accepted
18 Jan 2013
First published
18 Jan 2013

J. Mater. Chem. A, 2013,1, 3607-3612

The examination of graphene oxide for rechargeable lithium storage as a novel cathode material

D. Wang, C. Sun, G. Zhou, F. Li, L. Wen, B. C. Donose, G. Q. (. Lu, H. Cheng and I. R. Gentle, J. Mater. Chem. A, 2013, 1, 3607 DOI: 10.1039/C3TA01658G

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