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

doi:10.1021/am500996c

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 journal › Article › peer-review

54 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 language	English
Pages (from-to)	11158-11166
Number of pages	9
Journal	ACS Applied Materials and Interfaces
Volume	6
Issue number	14
DOIs	https://doi.org/10.1021/am500996c
Publication status	Published - 2014 Jul 23

All Science Journal Classification (ASJC) codes

Materials Science(all)

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10.1021/am500996c

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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.",

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AU - Rana, Kuldeep

AU - Singh, Jyoti

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AU - Park, Jong Hyeok

AU - Ahn, Jong Hyun

PY - 2014/7/23

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N2 - 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.

AB - 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.

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

Abstract

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