Graphene/sulfur hybrid nanosheets from a space-confined "sauna" reaction for high-performance lithium-sulfur batteries

Linfeng Fei; Xiaogang Li; Wentuan Bi; Zhiwen Zhuo; Wenfei Wei; Li Sun; Wei Lu; Xiaojun Wu; Keyu Xie; Changzheng Wu; Helen L W Chan; Yu Wang

doi:10.1002/adma.201502668

Graphene/sulfur hybrid nanosheets from a space-confined "sauna" reaction for high-performance lithium-sulfur batteries

Adv Mater. 2015 Oct 21;27(39):5936-42. doi: 10.1002/adma.201502668. Epub 2015 Aug 27.

Authors

Linfeng Fei¹, Xiaogang Li², Wentuan Bi², Zhiwen Zhuo³, Wenfei Wei⁴, Li Sun¹, Wei Lu¹, Xiaojun Wu³, Keyu Xie⁴, Changzheng Wu², Helen L W Chan¹, Yu Wang¹

Affiliations

¹ Department of Applied Physics, The Hong Kong Polytechnic University, Hong Kong, China.
² Hefei National Laboratory for Physical Sciences at Microscale and iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), University of Science and Technology of China, Hefei, Anhui, 230026, China.
³ CAS Key Lab of Materials for Energy Conversion, Department of Materials Science and Engineering and Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China, Hefei, Anhui, 230026, China.
⁴ State Key Laboratory of Solidification Processing and Center for Nano Energy Materials, Northwestern Polytechnical University, Xi'an, Shanxi, 710072, China.

PMID: 26310671
DOI: 10.1002/adma.201502668

Abstract

A space-confined "sauna" reaction system is introduced for the simultaneous reduction and functionalization of graphene oxide to unique graphene-sulfur hybrid nanosheets, in which thin layers of amorphous sulfur are tightly anchored on the graphene sheet via strong chemical bonding. Upon being used as the cathode material in lithium-sulfur batteries, the as-synthesized composite shows an excellent electrochemical performance.

Keywords: composite; graphene; interfacial engineering; lithium-sulfur battery; sulfur cathode.