Publication detail

Highly efficient and stable cryo-ground sulphur cathode for Li-S batteries

KAZDA, T. KRBAL, M. POUZAR, M. VONDRÁK, J. STRAKOVÁ FEDORKOVÁ, A. SLÁVIK, M. WÁGNER, T. MACÁK, J.

Original Title

Highly efficient and stable cryo-ground sulphur cathode for Li-S batteries

Type

journal article in Web of Science

Language

English

Original Abstract

Here we report on a Li-S battery with cathode, based on a S powder obtained from bulk amorphous S, by cryogenic grinding. The cathode was prepared from a slurry, wherein the content of cryo-ground S powder was equal to 80 wt % (corresponds to ≈ 2.26 mg cm−2). Other slurry components included carbon Super P, and polyvinylidene fluoride, dispersed in N-methylpyrrolidone. The electrochemical performance of the as-prepared battery was compared to a battery based on an identically prepared paste, but containing reference S powder (with the orthorhombic structure). A longer life cycle, and enhanced capacity per gram, as well as per cm2 of electrode was revealed for the cryo-ground S-based cathode. The electrochemical results show that the loss in capacity of the cryo-ground S powder cathode was just 3% after 50 cycles, which suggests on a higher stability of S inside the cathode during cycling.

Keywords

Lithium-sulphur battery; Sulphur cathode; Cryogenic grinding; Li-ion batteries

Authors

KAZDA, T.; KRBAL, M.; POUZAR, M.; VONDRÁK, J.; STRAKOVÁ FEDORKOVÁ, A.; SLÁVIK, M.; WÁGNER, T.; MACÁK, J.

Released

17. 9. 2016

ISBN

0378-7753

Periodical

Journal of Power Sources

Number

316

State

Kingdom of the Netherlands

Pages from

293

Pages to

298

Pages count

6

URL

http://www.sciencedirect.com/science/article/pii/S0378775316312125

BibTex

@article{BUT128233,
  author="Tomáš {Kazda} and Miloš {Krbal} and Miloslav {Pouzar} and Jiří {Vondrák} and Andrea {Straková Fedorková} and Marek {Slávik} and Tomáš {Wágner} and Jan M. {Macák}",
  title="Highly efficient and stable cryo-ground sulphur cathode for Li-S batteries",
  journal="Journal of Power Sources",
  year="2016",
  number="316",
  pages="293--298",
  doi="10.1016/j.jpowsour.2016.09.050",
  issn="0378-7753",
  url="http://www.sciencedirect.com/science/article/pii/S0378775316312125"
}