The critical contribution of unzipped graphene nanoribbons to scalable silicon–carbon fiber anodes in rechargeable Li-ion batteries

摘要: Abstract We have incorporated graphene nanoribbons (GNRs) which are unzipped from multi-wall carbon nanotubes (MWCNT) into silicon–carbon (Si/C) nanofibers, not only to reinforce hybrid Si/C fibers, but also increase the electrical conductivity and charge transport capability of fibers. demonstrated that GNRs promising components for improving rechargeable Li-ion battery performance due their unique nanostructures properties. Water based electrospinning, an easily scalable environmentally benign process, was utilized fabricate GNR/Si/C The resulting fibers exhibited a high reversible capacity more than 1800 mA h/g at 0.5 C, excellent 1400 mA h/g with no fading charge/discharge rate 1 C. This outstanding should be attributed enhanced mass transfer ability by incorporation ultrathin, flexible, conductive, aspect ratio GNRs. Electrodes made durable ones do exhibit dramatic volume morphology changes after cycling. Moreover, fiber anodes were tested in full-cell configuration where they displayed steady gravimetric ca. anode 25 cycles.