A free-standing reduced graphene oxide aerogel as supporting electrode in a fluorine-free Li2S8 catholyte Li-S battery
Artikel i vetenskaplig tidskrift, 2019

We report on a novel, simple, and environmentally benign synthesis route for a free-standing reduced graphene oxide (r-GO) aerogel and its application as supporting electrode for the electrochemical redox reaction of sulphur in a catholyte-based lithium-sulphur battery. A mesoporous matrix is formed by a layers of r-GO, providing sites for electrochemical reactions and a highly conducting pathway for electrons. The highly porous structure is easily infiltrated by a catholyte solution providing a homogeneous distribution of the sulphur active material in the conductive graphene matrix and ensuring efficient electrochemical reactions. This is demonstrated by a high capacity, 3.4 mAh cm−2, at high mass loading, 3.2 mg cm−2 of sulphur in the cathode and in total the sulphur loading in the Li-S cell is even double (6.4 mg cm−2). Additionally, the presence of oxygen groups in the r-GO aerogel structure stabilizes the cycling performance and the Li-S cell with the fluorine free catholyte shows a capacity retention of 85% after 350 cycles.

Reduced graphene oxide

Fluorine-free electrolyte for Li-S batteries

Polysulphide based catholyte electrodes

Energy storage

Li-S batteries


Carmen Cavallo

Chalmers, Fysik, Materialfysik

Marco Agostini

Chalmers, Fysik, Materialfysik

James P. Genders

University of Southampton

Muhammad Abdelhamid

Commonwealth Scientific and Industrial Research Organisation (CSIRO)

Aleksandar Matic

Chalmers, Fysik, Materialfysik

Journal of Power Sources

0378-7753 (ISSN)

Vol. 416 111-117


Oorganisk kemi


Annan kemiteknik

Annan fysik





Chalmers materialanalyslaboratorium



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