Synthesis of flower-like PANI/g-C3N4 nanocomposite as supercapacitor electrode

Zhou, Shixiang; Tao, Xueyu; Ma, Jie; Guo, Litong; Zhu, Yabo; Fan, Hongbing; Liu, Zhangsheng; Wei, Xian‐Yong

doi:10.1016/j.vacuum.2017.12.019

Cited by 89 publications

(23 citation statements)

References 12 publications

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“…The symmetric device exhibits a quasi‐spindle CV geometry and a pair of obvious anodic/cathodic redox peaks, revealing the ideal pseudocapacitive charge storage nature. It can be observed that with the gradual increase of scan rate, these CV curves show the well‐maintained shape, demonstrating the stable and fast charge/discharge behavior of the assembled symmetric cell …”

Section: Resultsmentioning

confidence: 82%

3D Structural Strengthening Urchin‐Like Cu(OH)₂‐Based Symmetric Supercapacitors with Adjustable Capacitance

Chang

Hui

Zhao

et al. 2019

Adv Funct Materials

107

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Developing advanced three-dimensional (3D) structural supercapacitors with both high capacity and good mechanical strength remains challenging. Herein, a novel road is reported for fabricating 3D structural strengthening supercapacitors with adjustable capacitance based on urchin-like Cu(OH) 2 lattice electrodes by bridging 3D printing technology with a facile electroless plating and electro-oxidation method. As revealed by the results, the 3D-printed octettruss lattice electrode features a high volumetric capacitance of 8.46 F cm −3 at 5 mA cm −3 and superior retention capacity of 68% at 1 A cm −3 . The assembled symmetric supercapacitor with a 70.2% capacitance retention after 5000 cycles possesses a 12.8 Wh kg −1 energy density at a power density of 2110.2 W kg −1 . Additionally, the resulting 3D structural strengthening electrodes can achieve both high compressive strength and toughness of 30 MPa and 264.7 kJ m −3 , respectively, demonstrating high mechanical strength and excellent antideformation capacity. With the proposed strategy, the electrochemical and mechanical properties of these novel 3D structural strengthened supercapacitors can be easily tuned by a simple spatial framework design, fulfilling the increasing demand of highly customized power sources in the space-constrained microelectronics and astronautic electronics industries.

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Section: Resultsmentioning

confidence: 82%

3D Structural Strengthening Urchin‐Like Cu(OH)₂‐Based Symmetric Supercapacitors with Adjustable Capacitance

Chang

Hui

Zhao

et al. 2019

Adv Funct Materials

107

View full text Add to dashboard Cite

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“…The absorption band at 810 cm –1 can be assigned to the tri- s -triazine-based structure. 54,55 Besides, C=N and C–N appeared at 1260–1480 and 1572–1633 cm –1 , respectively. These C=N and C–N bands have a slight difference in the G3 sample.…”

Section: Resultsmentioning

confidence: 99%

Quenching-Induced Structural Distortion of Graphitic Carbon Nitride Nanostructures: Enhanced Photocatalytic Activity and Electrochemical Hydrogen Production

et al. 2019

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Engineered nanomaterials are emerging in the field of environmental chemistry. This study involves the analysis of the structural, electronic, crystallinity, and morphological changes in graphitic carbon nitride (g-C 3 N 4 ), an engineered nanomaterial, under rapid cooling conditions. X-ray diffraction, scanning electron microscopy, high-resolution transmission electron microscopy, Brunauer–Emmett–Teller, Fourier transform infrared, Raman, band gap, and Mott–Schottky analyses strongly proved that the liquid N 2 -quenched sample of g-C 3 N 4 has structural distortion. The photocatalytic efficiency of engineered g-C 3 N 4 nanostructures was analyzed through the degradation of reactive red 120 (RR120), methylene blue (MB), rhodamine B, and bromophenol as a representative dye. The photocatalytic dye degradation efficiency was analyzed by UV–vis spectroscopy and total organic carbon (TOC) analysis. The photocatalytic efficiency of g-C 3 N 4 under different quenching conditions included quenching at room temperature in ice and liquid N 2 . The degradation efficiencies are found to be 4.2, 14.7, and 82.33% for room-temperature, ice, and liquid N 2 conditions, respectively. The pseudo-first-order reaction rate of N 2 -quenched g-C 3 N 4 is 9 times greater than the ice-quenched g-C 3 N 4 . Further, the TOC analysis showed that 55% (MB) and 59% (RR120) of photocatalytic mineralization were achieved within a time duration of 120 min by the liquid N 2 -quenched g-C 3 N 4 nanostructure. In addition, the quenched g-C 3 N 4 electrocatalytic behavior was examined via the hydrogen (H 2 ) evolution reaction in acidic medium. The liquid N 2 -quenched g-C 3 N 4 catalyst showed a lower overpotential with high H 2 evolution when compared with the other two g-C 3 N 4 -quenched samples. The results obtained provide an insight and extend the scope for the application of engineered g-C 3 N 4 nanostructures in the degradation of organic pollutants as well as for H 2 evolution.

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“…Hence, the energy density value of 12.25 Wh kg −1 and the power density 1075.6 W kg −1 were obtained for a PANI/WO 3 -based supercapacitor. The Ragone plot shows the power and energy densities, compared with the reference values (see Figure 8 b) [ 40 , 41 , 42 , 43 , 44 , 45 , 46 , 47 ].…”

Section: Resultsmentioning

confidence: 99%

An Aqueous Exfoliation of WO3 as a Route for Counterions Fabrication—Improved Photocatalytic and Capacitive Properties of Polyaniline/WO3Composite

et al. 2020

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In this paper, we demonstrate a novel, electrochemical route of polyaniline/tungsten oxide (PANI)/WO3) film preparation. Polyaniline composite film was electrodeposited on the FTO (fluorine-doped tin oxide) substrate from the aqueous electrolyte that contained aniline (monomer) and exfoliated WO3 as a source of counter ions. The chemical nature of WO3 incorporated in the polyaniline matrix was investigated using X-ray photoelectron spectroscopy. SEM (scanning electron microscopy) showed the impact of WO3 presence on the morphology of polyaniline film. PANI/WO3 film was tested as an electrode material in an acidic electrolyte. Performed measurements showed the electroactivity of both components and enhanced electrochemical stability of PANI/WO3 in comparison with PANI/Cl. Thus, PANI/WO3 electrodes were utilized to construct the symmetric supercapacitors. The impact of capacitive and diffusion-controlled processes on the mechanism of electrical energy storage was quantitatively determined. Devices exhibited high electrochemical capacity of 135 mF cm−2 (180 F g−1) and satisfactory retention rate of 70% after 10,000 cycles. The electrochemical energy storage device exhibited 1075.6 W kg−1 of power density and 12.25 Wh kg−1 of energy density. We also investigated the photocatalytic performance of the deposited film. Photodegradation efficiencies of methylene blue and methyl orange using PANI/WO3 and PANI/Cl were compared. The mechanism of dye degradation using WO3-containing films was investigated in the presence of scavengers. Significantly higher efficiency of photodecomposition of dyes was achieved for composite films (84% and 86%) in comparison with PANI/Cl (32% and 39%) for methylene blue and methyl orange, respectively.

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Synthesis of flower-like PANI/g-C3N4 nanocomposite as supercapacitor electrode

Cited by 89 publications

References 12 publications

3D Structural Strengthening Urchin‐Like Cu(OH)₂‐Based Symmetric Supercapacitors with Adjustable Capacitance

3D Structural Strengthening Urchin‐Like Cu(OH)₂‐Based Symmetric Supercapacitors with Adjustable Capacitance

Quenching-Induced Structural Distortion of Graphitic Carbon Nitride Nanostructures: Enhanced Photocatalytic Activity and Electrochemical Hydrogen Production

An Aqueous Exfoliation of WO3 as a Route for Counterions Fabrication—Improved Photocatalytic and Capacitive Properties of Polyaniline/WO3Composite

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Synthesis of flower-like PANI/g-C3N4 nanocomposite as supercapacitor electrode

Cited by 89 publications

References 12 publications

3D Structural Strengthening Urchin‐Like Cu(OH)2‐Based Symmetric Supercapacitors with Adjustable Capacitance

3D Structural Strengthening Urchin‐Like Cu(OH)2‐Based Symmetric Supercapacitors with Adjustable Capacitance

Quenching-Induced Structural Distortion of Graphitic Carbon Nitride Nanostructures: Enhanced Photocatalytic Activity and Electrochemical Hydrogen Production

An Aqueous Exfoliation of WO3 as a Route for Counterions Fabrication—Improved Photocatalytic and Capacitive Properties of Polyaniline/WO3Composite

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Product

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About

3D Structural Strengthening Urchin‐Like Cu(OH)₂‐Based Symmetric Supercapacitors with Adjustable Capacitance

3D Structural Strengthening Urchin‐Like Cu(OH)₂‐Based Symmetric Supercapacitors with Adjustable Capacitance