title: Carbon Materials for Lithium Sulfur Batteries-Ten Critical Questions.
abstract: Lithium-sulfur batteries are among the most promising electrochemical energy storage devices of the near future. Especially the low price and abundant availability of sulfur as the cathode material and the high theoretical capacity in comparison to state-of-the art lithium-ion technologies are attractive features. Despite significant research achievements that have been made over the last years, fundamental (electro-) chemical questions still remain unanswered. This review addresses ten crucial questions associated with lithium-sulfur batteries and critically evaluates current research with respect to them. The sulfur-carbon composite cathode is a particular focus, but its complex interplay with other hardware components in the cell, such as the electrolyte and the anode, necessitates a critical discussion of other cell components. Modern in situ characterisation methods are ideally suited to illuminate the role of each component. This article does not pretend to summarise all recently published data, but instead is a critical overview over lithium-sulfur batteries based on recent research findings.
authors.affiliation: Institute for Inorganic Chemistry, Technical University Dresden, Bergstrasse 66, 01069, Dresden, Germany. lars.borchardt@chemie.tu-dresden.de.
authors.forename: Lars
authors.initials: L
authors.lastname: Borchardt
authors.affiliation: Group of Inorganic Chemistry and Catalysis, Debye Institute of Nanomaterials Science, Utrecht University, Universiteitsweg 99, 3584 CG, Utrecht, The Netherlands.
authors.forename: Martin
authors.initials: M
authors.lastname: Oschatz
authors.affiliation: Institute for Inorganic Chemistry, Technical University Dresden, Bergstrasse 66, 01069, Dresden, Germany.
authors.forename: Stefan
authors.initials: S
authors.lastname: Kaskel
keywords: batteries; lithium; secondary battery; shuttle mechanism; sulfur