One-Step Synthesis of Graphene Oxide/Polypyrrole/MnO<sub>2</sub> Ternary Nanocomposites with an Improved Electrochemical Capacitance

Ji, Jiayou; Zhang, Xiaoya; Zhiliang, Huang; Yu, Xianghua; Huang, Huabo; Huang, Yineng; Li, Liang

doi:10.1166/jnn.2017.13097

Cited by 15 publications

(6 citation statements)

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“…For instance, incorporation of the third component, say, graphene or conducting polymer or CNTs component to MnO 2 (first component) and conducting polymer or graphene system or porous nanocarbons (second component) have markedly upgraded the overall capacitance and cyclic stability through modifications in the electrical conductivity, contact interactions, porosity, electrochemical surface activities besides improving the mechanical flexibility, etc. of the resultant ternary nanocomposite electrodes relative to the corresponding MnO 2 /conducting polymer or MnO 2 /graphene or MnO 2 /CNTs binary electrode systems respectively [161–212] …”

Section: Electrochemical Performances Of Various Mno2‐based Ternary Nmentioning

confidence: 99%

Review on Current Progress of MnO₂‐Based Ternary Nanocomposites for Supercapacitor Applications

Majumdar¹

2020

ChemElectroChem

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Manganese dioxide (MnO2) has proved itself as a popular pseudocapacitive material with low fabrication cost, high availability, low toxicity, and improved handling safety compared to many other inorganics or carbon‐based systems existing in the market. However, the specific capacitance reported to date has been far inferior to that of the theoretically predicted value (ca. 1370 Fg−1), which is mainly attributed to the issues associated with poor conductivity, nanostructure agglomeration, low porosity, rapid electrolyte‐mediated dissolution, and so forth, which have considerably limited its commercial effectiveness. Thus, to bring about improvement in the electrochemical performance of MnO2‐based supercapacitors, novel designs of MnO2 nanomaterials through composite formations with other substances, such as nanocarbons, conducting polymers or inorganic materials, namely metal oxides and sulfides, have been comprehensively explored. Extensive studies on these MnO2 binary nanocomposites revealed significant improvement in the electrochemical features compared to pristine phases; nevertheless, the achieved state is still far below practicability. Hence, scientists have opted for MnO2‐based ternary nanocomposites achieved by blending appropriate proportions the three components (MnO2 nanostructures being one of the constant components) that would promote synergism to attain suitable dimensions, crystallinity, crystal structure, conductivity, mass loading, and electrolyte selectivity so as to confer superior capacitance, charge transfer kinetics, better utilization of electroactive materials, energy and power densities, as well as improved mechanical stability and environmental adaptability. Herein, recent developments and advancements in the research of various MnO2‐based ternary nanocomposites employed for supercapacitor applications have been discussed and are compared with binary analogs with special emphasis on correlating their composition, morphology, and the electrochemical properties that are noticeably modified upon introduction of the third component. The associated challenges encountered in their progress toward commercialization and the probable ideas of persuading better strategic designs of these ternary systems for high‐performance supercapacitor applications have also been delineated.

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Section: Electrochemical Performances Of Various Mno2‐based Ternary Nmentioning

confidence: 99%

Review on Current Progress of MnO₂‐Based Ternary Nanocomposites for Supercapacitor Applications

Majumdar¹

2020

ChemElectroChem

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“…It is found that C sp of LBL assembled composite (786.6 F/g) is higher than single layer composites, PPy/MnO 2 (284 F/g) and PPy/GO (78 F/g). The LBL assembled PPy/GO|PPy/MnO 2 also has a higher C sp compared to the ternary GO/PPy/MnO 2 composite (207 F/g) 26 . This indicates that LBL assembled composite provides more active sites which enhance the electrochemical performance compared to the ternary composite.…”

Section: Resultsmentioning

confidence: 94%

Unveiling high specific energy supercapacitor from layer-by-layer assembled polypyrrole/graphene oxide|polypyrrole/manganese oxide electrode material

Kulandaivalu

Suhaimi

Sulaiman

2019

Sci Rep

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A novel layer-by-layer (LBL) based electrode material for supercapacitor consists of polypyrrole/graphene oxide and polypyrrole/manganese oxide (PPy/GO|PPy/MnO2) has prepared by electrochemical deposition. The formation of LBL assembled nanocomposite is confirmed by Fourier transform infrared spectroscopy, Raman spectroscopy and X-ray diffraction. The field emission scanning electron microscopy images clearly showed that PPy/MnO2 was uniformly coated on PPy/GO. The PPy/GO|PPy/MnO2 symmetrical supercapacitor has revealed outstanding supercapacitive performance with a high specific capacitance of 786.6 F/g, an exceptionally high specific energy of 52.3 Wh/kg at a specific power of 1392.9 W/kg and preserve a good cycling stability over 1000 cycles. It is certain that PPy/GO|PPy/MnO2 has an extraordinary perspective as an electrode for future supercapacitor developments. This finding contributes to a significant impact on the evolution of electrochemical supercapacitor.

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“…As shown in Figure 4C, the proximity of the phase angle to 90°r eflects the ideal capacitive behavior of the TMU-60 electrode, suggesting that this electrode can be considered as a promising supercapacitor electrode material. 41,42 The Nyquist plot of TMU-60 also demonstrates the Warburg impedance (W) related to the H + -ion diffusion process. 43 Regarding the impedance curves, the Bode plot displays variations in the phase angle with respect to frequency (Figure 4C).…”

Section: Resultsmentioning

confidence: 99%

Effect of Proton Conduction on the Charge Storage Mechanism of a MOF as a Supercapacitor Electrode

Rouhani

Kaviani

et al. 2021

J. Phys. Chem. C

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The current study aims to examine the charge storage mechanism of an amine-decorated metal–organic framework (TMU-60), as a supercapacitor electrode material, and explore the effect of proton conductivity on the supercapacitive performance of this electrode. To investigate the role of proton conductivity in charge storage capacity, Na2SO4 was selected as the base electrolyte at two pH levels (3 and 6). A high specific capacitance of 530 F·g–1 was achieved at 7 A·g–1 for the aqueous electrolyte at pH = 3, while the specific capacitance of the electrolyte decreased by 30% at pH = 6. The smaller sphere radius of H+ than Na+ and its higher ionic mobility in the narrow TMU-60 pores boosted charge transfer due to the higher ion penetration into the electrolyte/electrode interface. Furthermore, the presence of amines in proper orientation within the pores enhanced ion transport and ion mobility. The results obtained from cyclic voltammetry (CV) and electrochemical impedance spectroscopy for the electrodes at both pH values revealed that increasing the pH level elevated charge-transfer resistance. The constructed framework could tolerate high ranges of scan rates (200–1000 mV·s–1), and its semi-rectangular CV curves displayed a capacitance retention of 92.3% after over 4000 cycles.

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One-Step Synthesis of Graphene Oxide/Polypyrrole/MnO₂ Ternary Nanocomposites with an Improved Electrochemical Capacitance

Cited by 15 publications

References 0 publications

Review on Current Progress of MnO₂‐Based Ternary Nanocomposites for Supercapacitor Applications

Review on Current Progress of MnO₂‐Based Ternary Nanocomposites for Supercapacitor Applications

Unveiling high specific energy supercapacitor from layer-by-layer assembled polypyrrole/graphene oxide|polypyrrole/manganese oxide electrode material

Effect of Proton Conduction on the Charge Storage Mechanism of a MOF as a Supercapacitor Electrode

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One-Step Synthesis of Graphene Oxide/Polypyrrole/MnO2 Ternary Nanocomposites with an Improved Electrochemical Capacitance

Cited by 15 publications

References 0 publications

Review on Current Progress of MnO2‐Based Ternary Nanocomposites for Supercapacitor Applications

Review on Current Progress of MnO2‐Based Ternary Nanocomposites for Supercapacitor Applications

Unveiling high specific energy supercapacitor from layer-by-layer assembled polypyrrole/graphene oxide|polypyrrole/manganese oxide electrode material

Effect of Proton Conduction on the Charge Storage Mechanism of a MOF as a Supercapacitor Electrode

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One-Step Synthesis of Graphene Oxide/Polypyrrole/MnO₂ Ternary Nanocomposites with an Improved Electrochemical Capacitance

Review on Current Progress of MnO₂‐Based Ternary Nanocomposites for Supercapacitor Applications

Review on Current Progress of MnO₂‐Based Ternary Nanocomposites for Supercapacitor Applications