Electrospun fibrous electrodes with tunable microstructure made of polyaniline/multi-walled carbon nanotube suspension for all-solid-state supercapacitors

Liang, Junsheng; Su, Shijie; Xu, Fang; Wang, Dazhi; Xu, Shuangchao

doi:10.1016/j.mseb.2016.04.014

Cited by 27 publications

(4 citation statements)

References 21 publications

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“…As a comparison, the G-CD profiles of the A 3 -3, A 3 -6, A 3 -9, and A 3 -12 electrodes prepared with PANI coating shells were not exactly triangular because of the redox reaction of PANI (Figure b), but the almost symmetrical profile of the G-CD curves suggested an excellent Coulombic efficiency and the highly reversible charging–discharging transport of the electrodes. , The nonlinear appearance of discharge curves was due to the Faradaic reaction process. , Based on the charge–discharge curves, the C s values of A 3 , A 3 -3, A 3 -6, A 3 -9, and A 3 -12 calculated by eq were 74.2, 119.7, 164.6, 129.6, and 102.3 F g –1 , respectively. The highest C s value of the A 3 -6 electrode was analogous to that of different PANI-based electrodes previously reported, including the cellulose nanofiber/polyaniline nanohybrids prepared by polymerization (∼102 F g –1 ), polyaniline/cellulose nanofibers/natural rubber elastomer-based electrodes fabricated through a latex coagulation process (∼110 F g –1 ), porous PVA/polyaniline composite electrodes fabricated via a freeze/thaw method (∼150 F g –1 ), polyaniline/MWCNT fibrous electrodes prepared by an electrospinning technique (∼180 F g –1 ), and pectin–polyaniline hybrid aerogel-based electrodes prepared by a supercritical carbon dioxide drying method (∼184 F g –1 ) . For the A 3 -6 electrodes, the enhanced C s value was first attributed to the synergism of the CNT–CNC nanohybrids and PANI, which could substantially improve the electrochemical performance of PANI itself .…”

Section: Resultssupporting

confidence: 77%

“…Conversely, the excess PANI formed many agglomerates that were randomly distributed among the fibers if the coating time was longer than 6 h. Therefore, a polymerization time of 6 h was optimal for the creation of a densified, continuous, and coralline PANI shell. The pore volume, specific surface area, and porosity of electrodes are important to the electrochemical performance of a supercapacitor . The effects of the PANI coating time were characterized by a gravimetric method and an N 2 -adsorption/desorption analysis.…”

Section: Resultsmentioning

confidence: 99%

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Electrospun Core–Shell Nanofibrous Membranes with Nanocellulose-Stabilized Carbon Nanotubes for Use as High-Performance Flexible Supercapacitor Electrodes with Enhanced Water Resistance, Thermal Stability, and Mechanical Toughness

Han

Wang

Zhu

et al. 2019

ACS Appl. Mater. Interfaces

185

100

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A high-performance flexible supercapacitor electrode with a core–shell structure is successfully developed from cellulose nanocrystal (CNC)-stabilized carbon nanotubes (CNTs). By incorporating poly(vinyl alcohol) (PVA) and poly(acrylic acid) (PAA), a cross-linked nanofibrous membrane (CNT–CNC/PVA–PAA) is prepared as the core material via directional electrospinning, followed by a thermal treatment. The flexible supercapacitor electrodes are eventually fabricated via the in situ polymerization of polyaniline (PANI), which was used as the coating shell material, on the aligned electrospun nanofibers. By taking advantage of the thermally induced esterification cross-linking that occurs among PVA, PAA, and the CNT–CNC nanohybrids, the membranes present with enhanced water resistance, mechanical strength, and thermal stability. After the surface coating of the PANI shell, the optimized PANI@CNT–CNC/PVA–PAA nanofibrous membranes exhibit a large porosity, an enhanced specific surface area, a superior tensile strength of ∼54.8 MPa, and a favorable electroconductivity of ∼0.44 S m–1. As expected, the nanofibrous electrodes with a specific capacitance of 164.6 F g–1 can maintain 91% of the original capacitance after 2000 cycles. The symmetrical solid-state supercapacitor assembled by the nanofibrous electrodes shows an excellent capacitance of 155.5 F g–1 and a remarkable capacitance retention of 92, 90, and 89% after 2000 cycles under flat, bending, and twisting deformations, respectively.

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Section: Resultssupporting

confidence: 77%

Section: Resultsmentioning

confidence: 99%

Electrospun Core–Shell Nanofibrous Membranes with Nanocellulose-Stabilized Carbon Nanotubes for Use as High-Performance Flexible Supercapacitor Electrodes with Enhanced Water Resistance, Thermal Stability, and Mechanical Toughness

Han

Wang

Zhu

et al. 2019

ACS Appl. Mater. Interfaces

185

100

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“…The combination of such characteristics makes these fibers promising building blocks for designing innovative SCs. In fact, several works in the recent literature discuss the use of natural materials, such as cellulosic fibrils from wood, − bacteria, − and cotton, − or those of synthetic polymers, − such as in the case of fibers produced by electrospinning. Although these previous works exploit the benefits of using three-dimensional (3D) templates for the development of flexible SCs, there are still disadvantages associated with their production, such as the requirements of laborious procedures and, in some cases, of use of a considerable amount of toxic solvents.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of Highly Flexible Hierarchical Polypyrrole/Carbon Nanotube on Eggshell Membranes for Supercapacitors

2017

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Flexible batteries and supercapacitors (SCs) are expected to play a crucial role in energy storage and management in portable electronic devices. In addition, use of materials based on renewable resources would allow for more affordable and sustainable gadgets. In this context, eggshell membranes (ESMs) represent a promising functional platform for production of high-performance electronic components. In this work, we use ESMs for preparing flexible SCs through the incorporation of carbon nanotubes and subsequent in situ polymerization of polypyrrole, producing a highly conductive nanostructure characterized by a porous surface that exhibits both faradic and nonfaradic mechanisms for charge storage. We have found that by controlling the conducting polymer/carbon derivative relative concentration, one can maximize the corresponding capacitance to attain values up to the order 564.5 mF/cm 2 (areal capacitance), 24.8 F/cm 3 (volumetric capacitance), and 357.9 F/g (gravimetric capacitance). These bioinspired flexible devices exhibit a capacitance retention of 60% after 4000 cycles of charge/discharge and present negligible aging even after 500 bending repetitions (at a density of current 5 mA/cm 2 ). The successful use of ESM-based electrodes in association with carbon derivatives/conducting polymers confirm that the exploit of biological materials offers a promising perspective for the development of new ecofriendly electronic devices.

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“…There is also a significant redox peak in the PANI @ CQDs and PANI @ FMWCNTs cyclic voltammetry curve. The two types of electrodes show the same pair of redox peaks, which are attributed to redox transition of PANI between CQDs and FMWCNTs [37]. In comparison, the redox peak in the pure PANI is very weak [38], indicating that the redox reaction is less reversible.…”

Section: Electrochemical Performancementioning

confidence: 93%

Preparation and Electrochemical Properties of Functionalized Multi-Walled Carbon Nanotubes @ Carbon Quantum Dots @ Polyaniline Ternary Composite Electrode Materials

Wang

Chen

et al. 2020

Applied Sciences

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Based on various carbon nano materials, the ternary composite functionalized carbon nanotubes (FMWCNTs) @ carbon quantum dots (CQDs) @ polyaniline (PANI) was prepared by in-situ polymerization and hydrothermal method. The carbon-based material was made into an electrode sheet. The morphology and microscopic nanostructures were characterized by FTIR, field emission scanning electron microscopy and field emission transmission electron microscopy. Cyclic voltammetry and the galvanostatic charge discharge method was adapted to study the electrochemical properties of these active materials. Our results showed that the specific capacitance of FMWCNTs @ CQDs @ PANI was as high as 534 F/g, while it was 362 F/g, 319 F/g and 279 F/g for PANI @ FMWCNTs, PANI @ CQDs and polyaniline. This means that the specific capacitance of FMWCNTs @ CQDs @ PANI is increased by 47.5%, 67.4% and 91.4% comparing with the capacitance of PANI @ FMWCNTs, PANI @ CQDs and polyaniline, respectively. Moreover, the specific capacitance retention rate of the ternary active electrode after 1000 times of constant current charge and discharge cycle reached 86%, while it was 60% for PANI @ FMWCNTs, 72% for PANI @ CQDs and 65% for polyaniline.

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Electrospun fibrous electrodes with tunable microstructure made of polyaniline/multi-walled carbon nanotube suspension for all-solid-state supercapacitors

Cited by 27 publications

References 21 publications

Electrospun Core–Shell Nanofibrous Membranes with Nanocellulose-Stabilized Carbon Nanotubes for Use as High-Performance Flexible Supercapacitor Electrodes with Enhanced Water Resistance, Thermal Stability, and Mechanical Toughness

Electrospun Core–Shell Nanofibrous Membranes with Nanocellulose-Stabilized Carbon Nanotubes for Use as High-Performance Flexible Supercapacitor Electrodes with Enhanced Water Resistance, Thermal Stability, and Mechanical Toughness

Fabrication of Highly Flexible Hierarchical Polypyrrole/Carbon Nanotube on Eggshell Membranes for Supercapacitors

Preparation and Electrochemical Properties of Functionalized Multi-Walled Carbon Nanotubes @ Carbon Quantum Dots @ Polyaniline Ternary Composite Electrode Materials

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