Highly conductive freestanding graphene films as anode current collectors for flexible lithium-ion batteries

Kuldeep Rana, Jyoti Singh, Jeong Taik Lee, Jong Hyeok Park, Jong Hyun Ahn

Research output: Contribution to journalArticle

42 Citations (Scopus)

Abstract

The electrodes in lithium-ion batteries (LIBs) are typically films that are arranged on metal foil current collectors with a thickness of several tens of μm. Here, we report on the preparation of a thick free-standing graphene film synthesized by CVD as an alternative to Cu foil as an anode current collector. As a model system, MoS2 anodes with a flower-like morphology were anchored onto the surface of the thick graphene film. A hybrid and binder free anode without a conventional metal current collector exhibited an excellent capacity value of around 580 mAh/g (@50 mA/g) and reasonable charge/discharge cyclability. The work presented here may stimulate the use of graphene films as replacements for conventional current collectors and additive free electrode in LIBs.

Original languageEnglish
Pages (from-to)11158-11166
Number of pages9
JournalACS Applied Materials and Interfaces
Volume6
Issue number14
DOIs
Publication statusPublished - 2014 Jul 23

All Science Journal Classification (ASJC) codes

  • Materials Science(all)

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