AUTHOR=Hart Noam , Shi Jiayan , Zhang Jian , Fu Chengyin , Guo Juchen 

TITLE=Lithium Sulfide–Carbon Composites via Aerosol Spray Pyrolysis as Cathode Materials for Lithium–Sulfur Batteries

JOURNAL=Frontiers in Chemistry

VOLUME=6

YEAR=2018

URL=https://www.frontiersin.org/journals/chemistry/articles/10.3389/fchem.2018.00476

DOI=10.3389/fchem.2018.00476

ISSN=2296-2646

ABSTRACT=<p>We demonstrate a new technique to produce lithium sulfide-carbon composite (Li<sub>2</sub>S-C) cathodes for lithium-sulfur batteries <italic>via</italic> aerosol spray pyrolysis (ASP) followed by sulfurization. Specifically, lithium carbonate-carbon (Li<sub>2</sub>CO<sub>3</sub>-C) composite nanoparticles are first synthesized via ASP from aqueous solutions of sucrose and lithium salts including nitrate (LiNO<sub>3</sub>), acetate (CH<sub>3</sub>COOLi), and Li<sub>2</sub>CO<sub>3</sub>, respectively. The obtained Li<sub>2</sub>CO<sub>3</sub>-C composites are subsequently converted to Li<sub>2</sub>S-C through sulfurization by reaction to H<sub>2</sub>S. Electrochemical characterizations show excellent overall capacity and cycle stability of the Li<sub>2</sub>S-C composites with relatively high areal loading of Li<sub>2</sub>S and low electrolyte/Li<sub>2</sub>S ratio. The Li<sub>2</sub>S-C nanocomposites also demonstrate clear structure-property relationships.</p>