Facile synthesis of graphene paper/polypyrrole nanocomposite as electrode for flexible solid-state supercapacitor

Wang, Wei-zheng; Sadak, Omer; Guan, Jiehao; Gunasekaran, Sundaram

doi:10.1016/j.est.2020.101533

Cited by 42 publications

(19 citation statements)

References 51 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…According to the experimental results, the areal capacitance of the device at about 1.4 mA/cm 2 is about 255 mF/cm 2 . The values of the areal capacitance of the cells using electrodes developed from the PPy-GNP inks compare well with those obtained elsewhere using polyrrole and graphene based electrodes [39,40]. current density is closer to the changes observed in carbon-based EDLCs, which are described in Figure 11a, confirming that it is only PPy that is responsible for the faradaic mechanisms from which the capacitance originates.…”

Section: Resultssupporting

confidence: 85%

See 1 more Smart Citation

Polypyrrole and Graphene Nanoplatelets Inks as Electrodes for Flexible Solid-State Supercapacitor

et al. 2021

View full text Add to dashboard Cite

Flexible energy storage devices and supercapacitors in particular have become very attractive due to the growing demand for wearable consumer devices. To obtain supercapacitors with improved performance, it is useful to resort to hybrid electrodes, usually nanocomposites, that combine the excellent charge transport properties and high surface area of nanostructured carbon with the electrochemical activity of suitable metal oxides or conjugated polymers. In this work, electrochemically active conducting inks are developed starting from commercially available polypyrrole and graphene nanoplatelets blended with dodecylbenzenesulfonic acid. Films prepared by applying the developed inks are characterized by means of Raman measurements, Fourier Transform Infrared (FTIR) analysis, and Atomic Force Microscopy (AFM) investigations. Planar supercapacitor prototypes with an active area below ten mm2 are then prepared by applying the inks onto transparency sheets, separated by an ion-permeable nafion layer impregnated with lithium hexafluorophospate, and characterized by means of electrical measurements. According to the experimental results, the devices show both pseudocapacitive and electric double layer behavior, resulting in areal capacitance that, when obtained from about 100 mFcm−2 in the sample with polypyrrole-based electrodes, increases by a factor of about 3 when using electrodes deposited from inks containing polypyrrole and graphene nanoplateles.

show abstract

Section: Resultssupporting

confidence: 85%

Section: Resultssupporting

confidence: 81%

Polypyrrole and Graphene Nanoplatelets Inks as Electrodes for Flexible Solid-State Supercapacitor

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Supercapacitors are divided into three categories: electrical double‐layer capacitors that use carbon‐based materials such as activated carbon, 11‐13 graphene, 14,15 carbon nanotubes (CNTs), carbon cloth, 16 carbon nanofibers (CNF) 5,17 ; pseudocapacitors that use conductive polymers (such as PANI, 18,19 polypyrrole, 20 polythiophene, 21 PEDOT:PSS 22 ) or metal oxides/nitrides/sulfides/carbides (such as RuO 2 , MnO 2 , V 2 O 5 , Co 3 O 4 , Fe 3 O 4 ) 23 ; and hybrid capacitors 24‐32 where these two types of materials are used together.…”

Section: Introductionmentioning

confidence: 99%

Polyacrylonitrile/polyvinyl alcohol‐based porous carbon nanofiber electrodes for supercapacitor applications

Altın

Bedeloğlu

2021

Int J Energy Res

View full text Add to dashboard Cite

Summary Porous carbon nanofibers (PCNFs) were produced from polyacrylonitrile (PAN)/polyvinyl alcohol (PVA) hybrid nanofibers with different mixing ratios and used as the free‐standing, flexible, high performance electrodes for the supercapacitors. The effect of PAN/PVA ratio, PVA removing and stabilization/carbonization process on the chemical structure, and the morphology of PAN/PVA hybrid nanofibers and PCNF were investigated by Fourier transform infrared (FT‐IR), field emission scanning electron microscopy (FE‐SEM), and thermogravimetric analyzer (TGA). It was proved by FT‐IR and FE‐SEM analyses that PAN/PVA hybrid nanofibers are successfully produced and carbonized. In addition, the electrochemical performance of PCNF electrodes was analyzed by cyclic voltammetry (CV), galvanostatic charge/discharge (GCD), and electrochemical impedance spectroscopy (EIS) methods. Results showed that PCNFs exhibit higher specific capacitance and better electrochemical performance than neat carbon nanofibers (N‐CNF). The specific capacitance of the EK5 PCNF (67/33 PAN/PVA wt ratio) was 157 F/g at 5 mV/s scan rate in 1 M H2SO4, while the specific capacitance of N‐CNF was 96 F/g at the same conditions. Moreover, the PCNF showed excellent cyclic stability without losing performance through 2500 charge/discharge cycles at a current density of 2 A/g. As a result, free‐standing, flexible, and high‐performance PCNFs are excellent candidates as supercapacitor electrodes for flexible energy‐storage devices.

show abstract

“…Supercapacitors, typically known as electrochemical capacitors, are energy storage devices with a higher energy density than traditional capacitors and a greater power density than batteries. Electrochemical capacitors have a superior characteristics such as a long life cycle, a quick chargingdischarging rate, and a reasonable manufacturing cost (Sadak, Prathap, & Gunasekaran, 2019;W. Wang, Sadak, Guan, & Gunasekaran, 2020).…”

Section: Introductionmentioning

confidence: 99%

Symmetric Supercapacitor Application of Electrochemically Exfoliated Graphene – Chitosan Hydrogel

Sadak

2022

European Journal of Science and Technology

View full text Add to dashboard Cite

In this work, electrochemically exfoliated graphene-chitosan hydrogel was prepared by a crosslinking reagent. Then, a symmetrical all-solid state supercapacitor was fabricated using graphene-chitosan hydrogel. Surface morphology of as-fabricated graphene was investigated using SEM and TEM. After constructing the symmetrical all-solid state supercapacitor, the device showed a specific capacitance (Cm) of 153.6 Fg -1 at 1 mAg -1 current density. A great capacitance retention after 1000 consecutive GCD cycles was observed with an over 97% of retention. The supercapacitor can carry a high energy density of 3.47 kWkg -1 , as well as a high power density of 102.07 Wkg -1 .

show abstract

Facile synthesis of graphene paper/polypyrrole nanocomposite as electrode for flexible solid-state supercapacitor

Cited by 42 publications

References 51 publications

Polypyrrole and Graphene Nanoplatelets Inks as Electrodes for Flexible Solid-State Supercapacitor

Polypyrrole and Graphene Nanoplatelets Inks as Electrodes for Flexible Solid-State Supercapacitor

Polyacrylonitrile/polyvinyl alcohol‐based porous carbon nanofiber electrodes for supercapacitor applications

Symmetric Supercapacitor Application of Electrochemically Exfoliated Graphene – Chitosan Hydrogel

Contact Info

Product

Resources

About