Porous Ternary High Performance Supercapacitor Electrode Based on Reduced Graphene Oxide, NiMn2O4, and Polyaniline

By S. Sahoo, Suojiang Zhang, Jaesool Shim. 2016

159 citations recorded by the source corpus.

Abstract This paper reports a novel porous ternary nanohybrid based on NiMn 2 O 4 , reduced graphene oxide, and polyaniline (GNMOP) as a superior supercapacitor electrode material. GNMOP was fabricated using a hydrothermal-assisted thermal annealing method, followed by the conductive wrapping of polyaniline through in-situ polymerization. The structure and morphology of the ternary nanohybrid were characterized by field emission scanning electron microscopy (FESEM), high resolution transmission electron microscopy (HRTEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and Fourier transform infrared spectroscopy (FTIR). FTIR, XRD, and XPS confirmed the formation of ternary nanohybrid. SEM and Brunauer–Emmett–Teller (BET) measurement revealed the porous nature of GNMOP, whereas HRTEM analysis demonstrated the wrapping of conducting polyaniline (PANI) on binary composite. Such PANI wrapping enhanced the electrochemical performance of the binary nanocomposite. A specific capacitance of 757 F g −1 was achieved for GNMOP at a current density of 1 A g −1 , which is much higher than that of the binary nanocomposite and mixed transition metal oxide. In addition, GNMOP exhibited a maximum energy density of 70 Wh kg −1 and high capacitance retention of ∼93% after 2000 cycles. These outstanding electrochemical performances of GNMOP can be attributed to the proper wrapping of conducting polymer and the synergistic impact of distinct components.

Subfields: Biomedical Engineering, Electronic, Optical and Magnetic Materials, Polymers and Plastics

View Paper: https://www.semanticscholar.org/paper/bc93fadee90d9933f7222607334dd772a1ca5bd8

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In Biomedical Engineering

1. N. Azman
2. Yusran Sulaiman
3. L. H. Ngee

In Electronic, Optical and Magnetic Materials

1. N. Azman
2. Yusran Sulaiman
3. L. H. Ngee

In Polymers and Plastics

1. N. Azman
2. Yusran Sulaiman
3. L. H. Ngee

Citations in the corpus

• Graphene‐based ternary composites for supercapacitors (2018, methodology): “Recently, an excellent stability and porous electrode material based on RGO, PANI, and NiMn2O4 has been fabricated via hydrothermal‐assisted thermal annealing and in situ polymerization method and nickel foam was used as a substrate to improve the flexibility of the electrode.(43) The ternary compos”