Journal
SMALL
Volume 17, Issue 48, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/smll.202006504
Keywords
alkali-metal; sulfur batteries; carbonaceous hosts; electrochemical performance; sulfur cathode
Categories
Funding
- Australian Research Council (ARC) [DE170100928]
- Australian Renewable Energy Agency (ARENA) Project [G00849]
- Australian Research Council [DE170100928] Funding Source: Australian Research Council
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This article provides a comprehensive overview of the critical roles played by carbonaceous hosts in advanced next-generation alkali-metal/sulfur batteries, as well as strategies for designing and synthesizing these hosts.
Alkali-metal/sulfur batteries hold great promise for offering relatively high energy density compared to conventional lithium-ion batteries. By providing viable sulfur composites that can be effectively used, carbonaceous hosts as a key component play critical roles in overcoming the preliminary challenges associated with the insulating sulfur and its relatively soluble polysulfides. Herein, a comprehensive overview and recent progress on carbonaceous hosts for advanced next-generation alkali-metal/sulfur batteries are presented. In order to encapsulate the highly active sulfur mass and fully limit polysulfide dissolution, strategies for tailoring the design and synthesis of carbonaceous hosts are summarized in this work. The sticking points that remain for sulfur cathodes in current alkali-metal/sulfur systems and the future remedies that can be provided by carbonaceous hosts are also indicated, which can lead to long cycling lifetimes and highly reversible capacities under repeated sulfur reduction reactions in alkali-metal/sulfur during cycling.
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