Ethanol-assisted solvothermal synthesis of porous nanostructured cobalt oxides (CoO/Co3O4) for high-performance supercapacitors

Pang, Mingjun; Long, Guohui; Jiang, Shimei; Ji, Yuan; Han, Wei; Wang, Biao; Liu, Xiaoyang; Xi, Yunlong; Wang, Dongxue; Xu, Fuzhan

doi:10.1016/j.cej.2015.06.053

Cited by 168 publications

(55 citation statements)

References 43 publications

(50 reference statements)

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“…5,16 In general, the specic surface area of PANI has been increased by crosslinking and hypercrosslinking the PANI chains. [22][23][24][25] Moreover, this method has been employed for the synthesis of nanoporous structures. 5,16,17 A few other methods that have been adopted to increase the surface area of PANI were emulsion process, 20 bubble induced mechanism, 21 and template assisted method.…”

Section: Introductionmentioning

confidence: 99%

“…5,[16][17][18] The crosslinking of PANI was carried out mostly by thermal treatment, 18 however, microwave assisted methods, conventional methods have been used for hypercrosslinking through N-alkylation chemistry and Friedel-cra alkylation reaction. [22][23][24][25] There are a few reports on the crosslinking and hypercrosslinking of polymer chains using solvothermal method. 6 Solvothermal is a widely used simple technique for the synthesis of various nanostructures of metals, metal oxides, metal-organic frameworks and polymers.…”

Section: Introductionmentioning

confidence: 99%

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Solvothermally synthesized nanoporous hypercrosslinked polyaniline: studies of the gas sorption and charge storage behavior

et al. 2016

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A facile solvothermal method has been developed for the synthesis of high surface area nanoporous hypercrosslinked polyaniline (HCPANISs). A series of samples have been prepared by varying the hypercrosslinker content and reaction temperature. The maximum specific surface area (SA BET ) of 711 m 2 g À1 with the pore size distribution centered at 0.64 nm was measured for the sample synthesized with 1 mL diiodomethane (hypercrosslinker) at 160 C (HCPANIS-1 mL-160 C). This specimen further exhibited a CO 2 and CH 4 uptake of 14.7 and 1.8 wt%, respectively, at 0 C and 1 bar. It also showed the H 2 storage capacity of 1.18 wt% at À196 C and 1 bar. HCPANIS-1 mL-160 C was further investigated for electrochemical supercapacitor applications. The maximum specific capacitance calculated was 580 F g À1 at a scan rate of 3 mV s À1 with 68% retention capacity over 10 000 cycles at a current density of 10 A g À1 . † Electronic supplementary information (ESI) available: Reaction scheme, FTIR spectra and XRD patterns of HCPANISs, TGA/DTG thermogram of HCPANIS-1 mL-160 C, multipoint BET and Langmuir plots of HCPANISs, pore size distribution of HCPANIS-1 mL-160 C, CO 2 and CH 4 adsorption isotherms of HCPANISs measured at 25 C, comparative study of CO 2 and H 2 storage, isosteric heats of adsorption of CO 2 , CH 4 and H 2 adsorption, gas selectivity plots of HCPANIS-1 mL-160 C measured at 0 C and 25 C. See

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Solvothermally synthesized nanoporous hypercrosslinked polyaniline: studies of the gas sorption and charge storage behavior

et al. 2016

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“…The EDLCs electrode materials are mainly carbon materials such as carbon sphere, activated carbon, carbon nanotubes (CNTs), reduced graphene and so on56. The pseudocapacitors, however, rely on the fast and reversible redox reaction between electrolyte ions and electroactive materials, which possess higher capacitance and superior energy density than EDLCs7. The pseudocapacitors electrode materials are primarily conducting polymers89 and transition metal oxides/hydroxides101112.…”

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confidence: 99%

Preparation and electrochemical performances of carbon sphere@ZnO core-shell nanocomposites for supercapacitor applications

Xiao

Han

Chen

et al. 2017

Sci Rep

104

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Carbon sphere (CS)@ZnO core-shell nanocomposites were successfully prepared through facile low-temperature water-bath method without annealing treatment. The morphology and the microstructure of samples were characterized by transition electron microscopy (TEM), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS), respectively. ZnO nanoparticles with several nanometers in size decorated on the surface of the carbon sphere and formed a core-shell structure. Electrochemical performances of the CS@ZnO core-shell nanocomposites electrodes were investigated by cyclic voltammetry (CV) and galvanostatic charge/discharge (GDC). The CS@ZnO core-shell nanocomposite electrodes exhibit much larger specific capacitance and cycling stability is improved significantly compared with pure ZnO electrode. The CS@ZnO core-shell nanocomposite with mole ratio of 1:1 achieves a specific capacitance of 630 F g−1 at the current density of 2 A g−1. Present work might provide a new route for fabricating carbon sphere and transition metal oxides composite materials as electrodes for the application in supercapacitors.

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“…For the synthesis of mixed metal oxide nanoparticles, various methods such as, electrochemical [29], inverse microemulsion [30], hydrothermal [31], solvothermal [32], thermal decomposition [33], electrospinning [34], microwave-assisted [35], high energy mechanical ball milling [36], thermal evaporation [37] and sol-gel [38] processes have been employed. However, most of these approaches generally require high reaction temperature, tedious procedures, high-energy, long reaction time, expensive equipments, and harmful organic reagents or surfactants, which might further hinder their application.…”

Section: A N U S C R I P Tmentioning

confidence: 99%

Synthesis of Co 3 O 4 –ZnO mixed metal oxide nanoparticles by homogeneous precipitation method

Sharma

Ghose²

2016

Journal of Alloys and Compounds

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Ethanol-assisted solvothermal synthesis of porous nanostructured cobalt oxides (CoO/Co3O4) for high-performance supercapacitors

Cited by 168 publications

References 43 publications

Solvothermally synthesized nanoporous hypercrosslinked polyaniline: studies of the gas sorption and charge storage behavior

Solvothermally synthesized nanoporous hypercrosslinked polyaniline: studies of the gas sorption and charge storage behavior

Preparation and electrochemical performances of carbon sphere@ZnO core-shell nanocomposites for supercapacitor applications

Synthesis of Co 3 O 4 –ZnO mixed metal oxide nanoparticles by homogeneous precipitation method

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