Three-dimensional macroporous graphene monoliths with entrapped MoS2nanoflakes from single-step synthesis for high-performance sodium-ion batteries

Linfeng Fei, Ming Xu, Juan Jiang, Sheung Mei Ng, Longlong Shu, Li Sun, Keyu Xie, Haitao Huang, Chi Wah Leung, Chee Leung Mak, Yu Wang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

8 Citations (Scopus)

Abstract

Layered metal sulfides (MoS2, WS2, SnS2, and SnS) offer high potential as advanced anode materials in sodium ion batteries upon integration with highly-conductive graphene materials. However, in addition to being costly and time-consuming, existing strategies for synthesizing sulfides/graphene composites often involve complicated procedures. It is therefore essential to develop a simple yet scalable pathway to construct sulfide/graphene composites for practical applications. Here, we highlight a one-step, template-free, high-throughput "self-bubbling" method for producing MoS2/graphene composites, which is suitable for large-scale production of sulfide/graphene composites. The final product featured MoS2nanoflakes distributed in three-dimensional macroporous monolithic graphene. Moreover, this unique MoS2/graphene composite achieved remarkable electrochemical performance when being applied to Na-ion battery anodes; namely, excellent cycling stability (474 mA h g-1at 0.1 A g-1after 100 cycles) and high rate capability (406 mA h g-1at 0.25 A g-1and 359 mA h g-1at 0.5 A g-1). This self-bubbling approach should be applicable to delivering other graphene-based composites for emerging applications such as energy storage, catalysis, and sensing.
Original languageEnglish
Pages (from-to)2477-2484
Number of pages8
JournalRSC Advances
Volume8
Issue number5
DOIs
Publication statusPublished - 1 Jan 2018

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

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