Tailoring Commercially Available Raw Materials for Lithium-Sulfur Batteries with Superior Performance and Enhanced Shelf Life

Thieme S, Oschatz M, Nickel W, Brueckner J, Kaspar J, Althues H, Kaskel S (2015)

Publication Type: Journal article

Publication year: 2015

Journal

Energy Technology Wiley-Blackwell

Book Volume: 3

Pages Range: 1007-1013

Journal Issue: 10

DOI: 10.1002/ente.201500140

Abstract

Physical activation with CO2 is used to modify the micro-, meso-, and macropore system of commercial, highly branched carbon black (CB) particles. Due to the increased total porosity and high surface area of 1747m²g^-1 the completeness of sulfur infiltration in intra-particle pores of CB is promoted. This is found to not only minimize sulfur agglomeration on the particle surface but also reduce self-discharge, that is, polysulfide leakage. Wrapping the CB/sulfur composite with a poly(ethylene oxide)/poly(vinylpyrrolidone) film further triggers a synergy allowing for faster sulfur conversion with increased reversibility. Thus, an initial capacity of 1238mAhg^-1S at C/10 and a stable capacity of 1015mAhg^-1S after 50cycles were obtained, combined with a superior rate capability up to 2C (≈7.5mAcm^-2) and extremely slow self-discharge over 100days (open-circuit voltage>2.30V).

Involved external institutions

Fraunhofer-Institut für Werkstoff- und Strahltechnik (IWS) / Fraunhofer Institute for Material and Beam Technology

Germany (DE) Technische Universität Dresden

Germany (DE)

How to cite

APA:

Thieme, S., Oschatz, M., Nickel, W., Brueckner, J., Kaspar, J., Althues, H., & Kaskel, S. (2015). Tailoring Commercially Available Raw Materials for Lithium-Sulfur Batteries with Superior Performance and Enhanced Shelf Life. Energy Technology, 3(10), 1007-1013. https://doi.org/10.1002/ente.201500140

MLA:

Thieme, Sren, et al. "Tailoring Commercially Available Raw Materials for Lithium-Sulfur Batteries with Superior Performance and Enhanced Shelf Life." Energy Technology 3.10 (2015): 1007-1013.

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