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Article
Materials Science, Multidisciplinary
Yu Wang et al.
Summary: This study developed a facile approach to fabricate ultralong interconnected polypyrrole (PPy-GS) nanowires using a gemini surfactant (GS) as a soft template and dopant. The electrochemical performances, conductivity, and morphology of PPy-GS can be significantly altered by adjusting the concentration of GS. The incorporation of GS greatly enhanced the conductivity and specific capacitance of PPy-GS, demonstrating its potential in high-performance electrodes for supercapacitors and various energy storage applications.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Xueying Chang et al.
Summary: Through laser scribing technique, short-chain aniline trimers (ATs) and carbon nanotubes (CNTs) were covalently bonded using amide covalent linkages, resulting in a covalently coupled AT/CNT (ccAT/CNT) composite. The ccAT/CNT composite exhibited excellent cycling and rate performance, retaining 80% of its original capacitance after 20,000 charge/discharge cycles. This molecular design approach enabled by laser irradiation provides a feasible pathway towards robust advanced energy storage devices.
Review
Materials Science, Multidisciplinary
Sultan Ahmed et al.
Summary: With the depletion of fossil fuels and increasing energy demand, renewable energy sources and efficient energy storage technologies are gaining attention. Supercapacitors (SCs), despite having lower energy density than commercial batteries, are considered potential energy storage devices due to their compact size, excellent power management, long lifespan, high capacity, and throughput. Conducting polymers (CPs) have been employed as SC electrode materials due to their ease of synthesis, conductivity, and flexibility. However, their sole use results in low specific capacitance and poor cycle stability, which can be improved by combining them with nanomaterials like metal oxides and carbon forms.
Article
Polymer Science
Wen Wang et al.
Summary: Supercapacitors, known for their high power density, fast charging and discharging speeds, and long service life, are widely used in various fields. However, the integration of supercapacitors in flexible electronics faces challenges regarding extensibility, bending stability, and operability. To address these challenges, we deposited thiophene and 3-methylthiophene on patterned 304 stainless steel through electropolymerization to prepare stretchable conducting polymer electrodes. Moreover, the cycling stability of the electrodes was improved by protecting them with a poly(vinyl alcohol)/sulfuric acid gel electrolyte. The assembled flexible supercapacitors exhibited 93% stability even after 10,000 cycles of strain, highlighting their potential applications in flexible electronics.
Article
Engineering, Manufacturing
Jie Liu et al.
Summary: Adjusting the carbonization temperature can affect the graphitization degree and oxygen-containing functional groups on the carbon foam surface, thus influencing the morphology of polypyrrole coatings and the electrochemical performance of composite electrodes.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2023)
Article
Materials Science, Multidisciplinary
Afshin Dianatdar et al.
Summary: Polypyrrole is a promising conjugated polymer for use in electrochemical energy storage devices, thanks to its pseudocapacitive behavior and ability to hybridize with traditional carbon-based materials. The processing condition for hybridization is critical for long-term electrode performance. Depositing polypyrrole onto 3D carbon fiber fabric using oxidative chemical vapor deposition allows for uniform and controlled thickness deposition. The stability of the polypyrrole-carbon fiber electrode was tested, and the results showed that electrode stability is thickness-dependent and tuning it in the correct voltage window is crucial for optimal long-term performance.
Article
Chemistry, Physical
Xiaoyu Ma et al.
Summary: This paper presents a conductive hydrogel film with stretchability, breathability, and long-term stability, which shows excellent performance and promising applications.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Materials Science, Multidisciplinary
Steven A. Policastro et al.
Summary: Electrochemical impedance spectroscopy (EIS) is commonly used for in situ monitoring of coatings, but interpreting the data to assess coating states is challenging. This study presents a modified rapid electrochemical assessment of paint (REAP) equivalent circuit and a matrix algebra-based method to calculate circuit impedance. The new circuit and calculation method are applied to analyze EIS data from a two-layer organic coating system in NaCl solutions. Comparison with commercial software validates the matrix calculation method, and physics-based models of circuit elements improve the fitting performance against classic equivalent circuits.
Article
Chemistry, Multidisciplinary
Huifang Ren et al.
Summary: In this study, polypyrrole (PPy) materials with different morphologies were successfully synthesized using different template agents. The electrochemical properties of these PPy materials in different electrolytes were investigated, and the results showed that the morphology of PPy, as well as the ionic and pH properties of the electrolyte, greatly influenced the electrochemical behavior. The PPyNW fabricated with CTAB template exhibited a maximum capacitance of 307 F g-1 at 0.5 A g-1 in H2SO4 electrolyte, providing a strong reference for the selection of supercapacitor electrode materials.
Article
Energy & Fuels
Shihao Wang et al.
Summary: Constructing a reasonable electrode structure for supercapacitors remains challenging, but this study successfully achieved high energy density, long cycle life, and excellent rate performance through simple and mild preparation methods. By coating hierarchical porous polypyrrole (PPy) uniformly on carbon cloth (CC) fibers, the CC@PPy composite with improved surface area and porosity was constructed. The optimized CC@PPy electrode exhibited an impressive specific capacitance of 670.2 F g-1, and the as-fabricated asymmetric solid-state supercapacitor (ASSC) achieved a specific capacitance of up to 142.5 F g-1, superior rate capability, and outstanding cyclic stability. Furthermore, the ASSC achieved a high energy density of 64.1 Wh kg-1 at a power density of 900.0 W kg 1.
JOURNAL OF ENERGY STORAGE
(2023)
Review
Energy & Fuels
Sahar Yasami et al.
Summary: Various materials with desirable properties, such as high power density and extended cycle life, have attracted attention for potential applications in electronic devices. The development of high-efficiency, eco-friendly, and effective materials is essential. Flexible supercapacitors have the ability to bend, twist, and conform to various shapes and surfaces, making them ideal for integration into wearable electronics. Composite materials, including conductive materials like graphene and flexible polymer matrices, are commonly used in flexible supercapacitors. Metal oxides, such as RuO2, MnO2, and NiO, offer a wide range of choices for flexible supercapacitor electrodes due to their high specific capacitance. This study aims to provide an overview of various flexible electrode composite materials and recent developments.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Materials Science, Multidisciplinary
Doebner Von Tumacder et al.
Summary: The influence of organic dyes on the preparation of polypyrrole (PPy) is mainly manifested in changes in morphology and an increase in conductivity. Adding Acid Blue 25 (AB25) and Acid Blue 129 (AB129) during the electrosynthesis of pyrrole supports the modification of PPy morphology and leads to a change in its electrochemical behavior and stability. PPyAB25 exhibits higher electroactivity, capacitance, and diffusion-controlled capacitive contribution compared to PPyAB129.
MATERIALS RESEARCH BULLETIN
(2023)
Article
Engineering, Chemical
Shipeng Zhang et al.
Summary: Hydrogels have attracted increasing attention in various fields due to their biocompatibility, degradability, hydrophilic properties, adhesion, and stretchability. The combination of hydrogels with carbon-based materials, especially conductive hydrogels, has become a new research area. This review provides a comprehensive overview of recent developments in the synthesis, properties, and applications of conductive hydrogels incorporating carbon nanoparticles. The mechanical, electrical, and sensing properties of these hydrogels are analyzed, along with potential applications in wearable electronics and multifunctional materials.
Article
Materials Science, Multidisciplinary
Ravi Moreno Araujo Pinheiro Lima et al.
Summary: In this study, activated biochar was prepared as the active electrode material for supercapacitors, and its capacitive performance was improved by doping with polypyrrole (PPy). Physicochemical characterization data showed that PPy doping affected the morphology, specific surface area, pore structure, and surface functionalities of the biochar. The biochar-PPy composite exhibited a lower surface area compared to pristine biochar.
C-JOURNAL OF CARBON RESEARCH
(2023)
Review
Polymer Science
Melkie Getnet Tadesse et al.
Summary: Smart hydrogels with high electrical conductivity are ideal for tailored wearable cloths as they can be a real source of power and also collect and store diverse sources of energy. They possess ultrahigh stretchability, strong self-healability, low-temperature tolerance, and excellent mechanical properties.
Article
Materials Science, Multidisciplinary
Doebner Von Tumacder et al.
Summary: In the presence of Acid Blue 25, fibrillar polypyrrole film was electrosynthesised, which led to improved chain organization of PPy, increased capacitance by one order of magnitude up to 1770 mF/cm(2), and enhanced electroactivity and stability of the films.
Article
Chemistry, Multidisciplinary
Shen Congcong et al.
Summary: An ultrasensitive electrochemical biosensor with excellent electrocatalytic activities was fabricated for the detection of ascorbic acid, dopamine, and uric acid individually and simultaneously. The biosensor, based on polypyrrole hollow nanotubes loaded with gold and iron oxide nanoparticles, showed linear responses and low detection limits for the analytes in both individual and simultaneous detections. The biosensor was successfully applied to the detection of the analytes in actual samples.
CHEMICAL RESEARCH IN CHINESE UNIVERSITIES
(2022)
Article
Chemistry, Applied
Renjie Zhang et al.
Summary: In this study, multidimensional morphology controllable carbon materials were synthesized using watermelon rinds as the carbon source. The carbon materials showed excellent properties such as large specific area and high capacitance, making them promising energy materials for supercapacitors.
Article
Materials Science, Multidisciplinary
Zihang Xiong et al.
Summary: A novel strategy is proposed to enhance the electrochemical performance of a polypyrrole-coated cellulose paper-based supercapacitor by increasing the reaction interface between hydrophobic pyrrole and hydrophilic FeCl3 solution. The paper is pretreated with regenerated cellulose to increase its specific surface area and provide more adsorption sites for the polyaniline. The as-prepared paper electrode shows improved PPy loading and excellent capacitance performance, suggesting a new approach for improving the electrochemical performance of supercapacitors.
MACROMOLECULAR MATERIALS AND ENGINEERING
(2022)
Article
Materials Science, Multidisciplinary
Yushan Ruan et al.
Summary: In this study, Na2MnFe(CN)(6)@PPy nanocubes were prepared via a simple co-precipitation method with PPy coating, showing higher capacity and better stability. The electrochemical performances of the Na2MnFe(CN)(6)@PPy cathode material in hybrid electrolytes adjusted via different mixed ion solutions were also investigated.
Article
Biochemistry & Molecular Biology
Manasanan Namhongsa et al.
Summary: By combining 3D printing and electrospinning techniques, PLCL-3D/E and PLGA-3D/E scaffolds with an ideal pore structure for nerve guide conduits were designed. PPy was deposited on the surface of the scaffolds to enhance biocompatibility and conductivity. PLGA-3D/E/PPy showed superior cytocompatibility compared to PLCL-3D/E/PPy.
Article
Chemistry, Applied
Yan Sun et al.
Summary: This study developed a facile and efficient method to deposit anion-doped PPy onto positively charged SnCl2-modified BC using electrostatic self-assembly. The obtained PPy@SBC electrode exhibited high areal capacitance, desirable capacitance retention, and excellent cycling stability. A symmetric flexible supercapacitor assembled with the PPy@SBC electrodes demonstrated outstanding mechanical flexibility and stable performance.
CARBOHYDRATE POLYMERS
(2022)
Article
Energy & Fuels
Prashant Dubey et al.
Summary: The combination of activated carbon derived from human hair and conducting polymer (polypyrrole) as a composite material shows enhanced pseudocapacitance, higher specific capacitance, and improved cyclic stability for supercapacitor applications. An assembled asymmetrical supercapacitor device using the composite material exhibits a high energy density and power density in an aqueous electrolyte, avoiding the need for expensive and toxic organic electrolytes.
Article
Polymer Science
Zahra Roohi et al.
Summary: The presence of methyl orange (MO) and the treatment with sulfuric acid have been found to significantly increase the specific capacitance of polypyrrole (PPy) membranes. Various characterization techniques were employed to evaluate the properties of the membranes, and it was observed that the combination of MO and acid treatment enhanced the charge transfer process and improved the charge storage performance and specific capacitance of the PPy membranes.
Article
Chemistry, Multidisciplinary
Iram Naseeb et al.
Summary: In this study, PPy/NaVO3 composites with different compositions of NaVO3 were synthesized using the interfacial polymerization method and used as efficient electrode materials for supercapacitors. The PV4 composite showed excellent cycling stability and specific capacitance at a current density of 0.75 A/g.
RESULTS IN CHEMISTRY
(2022)
Review
Chemistry, Multidisciplinary
Yongrui Yang et al.
Summary: Supercapacitors have gained significant attention in recent years for their high energy storage efficiency, reliable stability, and eco-friendly process. This study reviews the recent progress in the development of high-performance all-solid-state flexible supercapacitors, focusing on the electrodes and electrolytes used. The operational principles of various supercapacitors are introduced, along with an overview of electrode materials and polymer-based solid-state electrolytes in different systems. The recent advancements and future research directions for all-solid-state flexible supercapacitors are summarized.
Review
Materials Science, Multidisciplinary
Xiao-Xiong Wang et al.
Summary: Electrospinning is a versatile technique for mass fabrication of continuous ultrafine fibers from various polymers and composites. The use of conductive polymer-based ultrafine fibers has great potential in applications such as bio/chemical sensors, artificial muscles, and tissue regeneration.
PROGRESS IN MATERIALS SCIENCE
(2021)
Article
Materials Science, Multidisciplinary
Zuzana Moravkova et al.
Summary: The study found that different molecular structures can be formed during the chemical oxidation of aniline depending on various factors. By analyzing the chemical oxidation of pyrrole, the research aimed to explore the dependence of the molecular structure of the oxidation products on the reaction stage and describe the kinetics of the oxidation process. This was achieved through various characterization techniques such as pH, temperature changes, UV-Vis, and Raman spectra measurements.
Article
Biochemistry & Molecular Biology
Ezgi Nur Heybet et al.
Summary: Nanomaterials, specifically polypyrrole nanotube incorporated sodium alginate, showed promising results in the adsorptive removal of methylene blue dye from aqueous solution. The Langmuir isotherm model was found to be the most suitable in describing the adsorption process, with a maximum adsorption capacity of 666.7 mg/g at pH=7 and 25 degrees C. Additionally, the adsorption followed the pseudo-second-order kinetic model and occurred exothermically and spontaneously based on the thermodynamic parameters.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)
Article
Polymer Science
Caroline P. R. Malere et al.
Summary: This study focused on radar absorbing materials based on conducting polymer polypyrrole (PPy) and organic-inorganic nanocomposites of PPy filled with lamellar structure kaolinite clay (PPy/Kao) for X-band frequency range application. The synthesized materials demonstrated effective electromagnetic wave absorption, with thermal stability above 120 degrees C and incident wave attenuation ranging from -10 to -33 dB (90%-99.9%) in the X-band.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Materials Science, Multidisciplinary
Liang Zhang et al.
Summary: A novel electrochemical sensing platform based on Pt-PPy-CC was designed for detection of ammonia-nitrogen in water, showing high sensitivity and low detection limit. The platform's electrochemical behavior was attributed to the catalytic activity of Pt nanosheets and the self-supported structure of the electrode.
Article
Materials Science, Multidisciplinary
Fenyu Wang et al.
Summary: Elastic conducting hydrogels with one-dimensional nanotubes-based porous networks exhibit good electrochemical performance and potential for energy storage applications. The PPy hydrogels reinforced by TEMPO-oxidized cellulose pave the way for the construction of high-performance electronic devices, including quasi-solid-state supercapacitors that can power LED bulbs. These hydrogels combine electrical conductivity, high elasticity, and mechanical stability in a unique design for remarkable electronic devices.
Article
Chemistry, Applied
Miao Yu et al.
Summary: In this study, hierarchical porous magnetic activated carbon aerogel/polypyrrole composites were synthesized through a facile method, exhibiting high specific surface area and specific capacitance. The composite material shows great potential as a high-performance electrode material with outstanding electrochemical performance and long cycling stability.
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(2021)
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Polymer Science
Doebner Von Tumacder et al.
Summary: The study focused on polypyrrole (PPy) prepared with organic dyes for its interesting morphology and electronic properties. It described the preparation of electropolymerized PPy/safranin-O film and found that incorporating safranin-O significantly enhanced the areal capacitance of PPy.
Article
Chemistry, Physical
Ting Yue et al.
Summary: A novel electrode structure for supercapacitors has been developed in this study, showing high energy storage performance and excellent mechanical flexibility, with potential applications in wearable electronic devices.
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(2021)
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Facai Wei et al.
Summary: The study has successfully developed a simple soft template-mediated coupling construction approach to create an unexplored sandwiched mesoporous polypyrrole nanocoating/single-crystal Ag nanoplate hybrid. This hybrid exhibits an adjustable meso-structure and architecture, strong near-infrared absorption and Raman enhancement effect, as well as outstanding chemical sensing performance.
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