Route to sustainable lithium-sulfur batteries with high practical capacity through a fluorine free polysulfide catholyte and self-standing Carbon Nanofiber membranes

Lim, Du Hyun,1983Chalmers tekniska högskola,Chalmers University of Technology (author)

We report on a new strategy to improve the capacity, reduce the manufacturing costs and increase the sustainability of Lithium-Sulfur (LiS) batteries. It is based on a semi-liquid cathode composed of a Li2S8 polysulphide catholyte and a binder-free carbon nanofiber membrane with tailored morphology. The polysulphides in the catholyte have the dual role of active material and providing Li+-conduction, i.e. no traditional Li-salt is used in this cell. The cell is able to deliver an areal capacity as high as 7 mAh cm(-2), twice than that of commercial Lithium-ion batteries (LiBs) and 2-4 times higher than that of state-of-the-art LiS cells. In addition, the battery concept has an improved sustainability from a material point of view by being mainly based on sulfur and carbon and being completely fluorine-free, no fluorinated salt or binders are used, and has potential for upscaling and competitive price. The combination of these properties makes the semi-liquid LiS cell here reported a very promising new concept for practical large-scale energy storage applications.

Agostini, Marco,1987Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)agostini (author)
Nitze, Florian,1981Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)nitze (author)
Manuel, J.Gyeongsang National University (author)
Ahn, J. H.Gyeongsang National University (author)
Matic, Aleksandar,1968Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)matic (author)
Chalmers tekniska högskolaGyeongsang National University (creator_code:org_t)

In:Scientific Reports: Springer Science and Business Media LLC7:1, s. Article no. 6327 -2045-23222045-2322

By the author/editor: Lim, Du Hyun, 19 ...; Agostini, Marco, ...; Nitze, Florian, ...; Manuel, J.; Ahn, J. H.; Matic, Aleksanda ...

About the subject

NATURAL SCIENCES: NATURAL SCIENCES; and Physical Science ...; and Condensed Matter ...

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