Journal
NANOSCALE
Volume 6, Issue 17, Pages 10147-10155Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4nr01033g
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Funding
- Global Frontier RAMP
- D Program on Center for Multiscale Energy System - National Research Foundation under the Ministry of Education, Science and Technology, Korea
- National Research Foundation of Korea grant - Korean Government [2012R1A2A2A01002879]
- Korea Health 21 RAMP
- D Project, Ministry of Health Welfare [A121631]
- Ministry of Oceans and Fisheries, Korea
- Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Science, ICT and Future Planning [NRF-2013R1A1A2074550]
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A one-step and mass-production synthetic route for a flexible reduced tungsten oxide-carbon composite nanofiber (WOx-C-NF) film is demonstrated via an electrospinning technique. The WOx-C-NF film exhibits unprecedented high content of metal-oxides (similar to 80 wt%) and good flexibility (the tensile strength of the specimen was 6.13 MPa) without the use of flexible support materials like CNTs or graphene. The WOx-C-NF film is directly used as an anode in a lithium ion battery (LIB). Compared with previously reported tungsten oxide electrodes, the WOx-C-NF film exhibits high reversible capacity (481 mA h g(total electrode)(-1)), stable cycle, and improved rate performance, without the use of additive carbon, a polymeric binder and a current collector. Moreover, control electrodes fabricated by conventional processes support the positive effects of both the freestanding electrode and metal-oxide embedded carbon 1-D nanofiber structure.
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