Flexible and Robust Sandwich-Structured S-Doped Reduced Graphene Oxide/Carbon Nanotubes/Polyaniline (S-rGO/CNTs/PANI) Composite Membranes: Excellent Candidate as Free-Standing Electrodes for High-Performance Supercapacitors

• DOI: 10.1016/j.electacta.2017.03.040
• Publication Date: 2017-03-06T20:33:22Z
• Authors: Dong Liu; Pengcheng Du; Wenli Wei; Hongxing Wang; Qi Wang; Peng Liu
• Keywords: 02 engineering and technology; 0210 nano-technology; 7. Clean energy; 6. Clean water; 620

Paper-like flexible electrode becomes one of the most important research objects in energy storage. In the present work, sandwich-structured S-doped reduced graphene oxide/carbon nanotubes/polyaniline (S-rGO/CNTs/PANI) composite membranes were designed as free-standing electrodes for high-performance supercapacitors, by electro-deposition of polyaniline (PANI) onto the flexible and robust sandwich structured S-doped reduced graphene oxide/carbon nanotubes (S-rGO/CNTs) composite films as highly conductive supports, which were prepared through a mild hydrothermal reduction and doping reaction of graphene oxide (GO) nanosheets in presence of multi-walled carbon nanotubes (MW-CNTs), with Na2S as not only a sulfur precursor, but also a high-efficient reducing agent. The S-rGO/CNTs/PANI composite membrane electrode possessed high specific capacitance (812 F/g) in 1.0 M H2SO4 aqueous solution, with excellent rate capability and cycling stability for supercapacitors without the need of current collectors and binders, showing significant potential in flexible energy storage devices. (C) 2017 Elsevier Ltd. All rights reserved.