Issue 2, 2019

3D hollow reduced graphene oxide foam as a stable host for high-capacity lithium metal anodes

Abstract

Lithium is considered to be a promising anode material for high-energy batteries on account of its high capacity and low potential. However, both dendritic lithium formation and very large volume changes during cycling severely restrict its practical applications. Herein, we propose a 3D hollow reduced graphene oxide foam as a host for prestoring lithium. Aside from the advantages of accommodating volume change and lowering the local current density, this unique structure also provides a large host space, one that enables lithium prestorage both outside and inside the reduced graphene oxide, in which Li occupies ∼85 weight percent of the whole composite electrode. The anode showed a corresponding gravimetric specific capacity as high as 3280 mA h g−1. Moreover, it showed highly stable cycling with small hysteresis at 1 mA cm−2 in the carbonate electrolyte. When it was assembled into a full cell with NCM (Li(Ni1/3Co1/3Mn1/3)O2) as the cathode, the resulting battery showed good cycling performance, having displayed 92% capacity retention (128.2 mA h g−1) and appealing power capacity (82 mA h g−1 at 5C) after being cycled 200 times at 0.3C.

Graphical abstract: 3D hollow reduced graphene oxide foam as a stable host for high-capacity lithium metal anodes

Supplementary files

Article information

Article type
Research Article
Submitted
30 септ. 2018
Accepted
13 дек. 2018
First published
19 дек. 2018

Mater. Chem. Front., 2019,3, 339-343

3D hollow reduced graphene oxide foam as a stable host for high-capacity lithium metal anodes

P. Yao, Q. Chen, Y. Mu, J. Liang, X. Li, X. Liu, Y. Wang, B. Zhu and J. Zhu, Mater. Chem. Front., 2019, 3, 339 DOI: 10.1039/C8QM00499D

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