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Microwave autoclave synthesized multi-layer graphene/single-walled carbon nanotube composites for free-standing lithium-ion battery anodes

Journal Article


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Abstract


  • Multi-layer graphene sheets have been synthesized by a time-efficient microwave autoclave method and used to form composites in situ with single-walled carbon nanotubes. The application of these composites as flexible free-standing film electrodes was then investigated. According to the transmission electron microscopy and X-ray diffraction characterizations, the average d-spacing of the graphene-single-walled carbon nanotube composites was 0.41 nm, which was obviously larger than that of the as-prepared pure graphene (0.36 nm). The reversible Li-cycling properties of the free-standing films have been evaluated by galvanostatic discharge-charge cycling and electrochemical impedance spectroscopy. Results showed that the free-standing composite film with 70 wt% graphene exhibited the lowest charge transfer resistance and the highest charge capacity of about 303 mAh g-1 after 50 cycles, without any noticeable fading.

Publication Date


  • 2014

Published In


Citation


  • Zhong, C., Wang, J., Wexler, D. & Liu, H. K. (2014). Microwave autoclave synthesized multi-layer graphene/single-walled carbon nanotube composites for free-standing lithium-ion battery anodes. Carbon, 66 637-645.

Scopus Eid


  • 2-s2.0-84886777596

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=1925&context=aiimpapers

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/924

Has Global Citation Frequency


Number Of Pages


  • 8

Start Page


  • 637

End Page


  • 645

Volume


  • 66

Place Of Publication


  • United Kingdom

Abstract


  • Multi-layer graphene sheets have been synthesized by a time-efficient microwave autoclave method and used to form composites in situ with single-walled carbon nanotubes. The application of these composites as flexible free-standing film electrodes was then investigated. According to the transmission electron microscopy and X-ray diffraction characterizations, the average d-spacing of the graphene-single-walled carbon nanotube composites was 0.41 nm, which was obviously larger than that of the as-prepared pure graphene (0.36 nm). The reversible Li-cycling properties of the free-standing films have been evaluated by galvanostatic discharge-charge cycling and electrochemical impedance spectroscopy. Results showed that the free-standing composite film with 70 wt% graphene exhibited the lowest charge transfer resistance and the highest charge capacity of about 303 mAh g-1 after 50 cycles, without any noticeable fading.

Publication Date


  • 2014

Published In


Citation


  • Zhong, C., Wang, J., Wexler, D. & Liu, H. K. (2014). Microwave autoclave synthesized multi-layer graphene/single-walled carbon nanotube composites for free-standing lithium-ion battery anodes. Carbon, 66 637-645.

Scopus Eid


  • 2-s2.0-84886777596

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=1925&context=aiimpapers

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/924

Has Global Citation Frequency


Number Of Pages


  • 8

Start Page


  • 637

End Page


  • 645

Volume


  • 66

Place Of Publication


  • United Kingdom