Phase‐Separated Polyaniline/Graphene Composite Electrodes for High‐Rate Electrochemical Supercapacitors

Wu, Jifeng; Zhang, Qin’e; Zhou, Anan; Huang, Zhifeng; Bai, Hua; Li, Lei

doi:10.1002/adma.201601153

Cited by 137 publications

(76 citation statements)

References 37 publications

(51 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In the conventional slow‐mixing reactions, as more ammonium peroxydisulfate is slowly fed into the reaction, the PANI turn into irregularly shaped agglomerates. Oppositely, a modified fast‐mixing reaction almost come into being polyaniline nanofibers with homogenerous dimensions attributed to the suppressed secondary growth …”

Section: Resultsmentioning

confidence: 99%

Polyaniline‐Modified Hierarchical Graphene Fiber for Ultrahigh‐Performance Electrochemical Supercapacitor with Carbon Fiber in Core as Current Collector

et al. 2019

View full text Add to dashboard Cite

As the demand for portable and wearable energy‐storage devices increases, fiber‐type supercapacitors have rapidly developed. Herein, a two‐step synthesis method is developed to fabricate polyaniline‐modified hierarchical graphene fibers (GFs) with carbon fiber as the core. Using these fibers as the electrode of the supercapacitor, the highly conductive graphene sheets in these fibers can accelerate the transfer of electrolyte ions and fully enhance the Faraday redox transition of polyaniline on the fiber surface, thus realizing the volume capacitance of 2053 F cm−3. The core–shell hierarchical structures contribute to the high robustness and flexibility of the fibers, which are beneficial to their application in wearable or flexible systems. Moreover, large‐scale production of the core–shell fibers as supercapacitor electrodes without metal wires can be easily realized by a simple bonding technique, which opens up a promising opportunity for practical flexible devices.

show abstract

Section: Resultsmentioning

confidence: 99%

Polyaniline‐Modified Hierarchical Graphene Fiber for Ultrahigh‐Performance Electrochemical Supercapacitor with Carbon Fiber in Core as Current Collector

et al. 2019

View full text Add to dashboard Cite

show abstract

“…Similar to carbon‐based materials, the nanostructure and mesostructure of metal phosphides and phosphates are highly tunable for better access by electrolytes, which are important considerations as a class of electrodes where both good intra‐ and inter‐particle conductivity are required . Similar to transition metal oxides/hydroxides and conducting polymers, some of which have been widely studied for the hybrid‐type electrode materials aiming for improved electrochemical performance . While considerable progress has been made with the carbon‐based materials, transition metal oxides/hydroxides, conducting polymers and their composites; several of the metal phosphides and phosphates would be better alternatives, when they are properly established …”

Section: Introductionmentioning

confidence: 99%

Metal Phosphides and Phosphates‐based Electrodes for Electrochemical Supercapacitors

Elshahawy

Guan

et al. 2017

Small

387

175

View full text Add to dashboard Cite

Phosphorus compounds, such as metal phosphides and phosphates have shown excellent performances and great potential in electrochemical energy storage, which are demonstrated by research works published in recent years. Some of these metal phosphides and phosphates and their hybrids compare favorably with transition metal oxides/hydroxides, which have been studied extensively as a class of electrode materials for supercapacitor applications, where they have limitations in terms of electrical and ion conductivity and device stability. To be specific, metal phosphides have both metalloid characteristics and good electric conductivity. For metal phosphates, the open-framework structures with large channels and cavities endow them with good ion conductivity and charge storage capacity. In this review, we present the recent progress on metal phosphides and phosphates, by focusing on their advantages/disadvantages and potential applications as a new class of electrode materials in supercapacitors. The synthesis methods to prepare these metal phosphides/phosphates are looked into, together with the scientific insights involved, as they strongly affect the electrochemical energy storage performance. Particular attentions are paid to those hybrid-type materials, where strong synergistic effects exist. In the summary, the future perspectives and challenges for the metal phosphides, phosphates and hybrid-types are proposed and discussed.

show abstract

“…Accordingly, many researchers are seeking for electrically conductive polymers as alternatives to modify the original hydrogels. Conductive polymers, including polyaniline (PANI), polypyrrole, and polythiophene, exhibit excellent electrical conductivity that match with metallic materials . PANI is one of the most studied conductive polymers, suggesting a strong potential for use in applications such as electromagnetic shielding materials, energy storage materials, or anticorrosion coatings, for the low cost, easy preparation, excellent environmental stability, unique proton doping mechanism, high conductivity and pseudocapacitance …”

Section: Introductionmentioning

confidence: 99%

A Temperature‐Controlled, Conductive PANI@CNFs/MEO₂MA/PEGMA Hydrogel for Flexible Temperature Sensors

Liu

Luo

Qing

et al. 2018

Macromol. Rapid Commun.

View full text Add to dashboard Cite

Electrically conductive, yet stimuli-responsive hydrogels are highly desirable for many technological applications. However, the discontinuous conductivity of hydrogels during the response process has become a bottleneck that limits their application. To overcome this constraint, a linearly tunable, electrically conductive hydrogel is prepared using in-situ polymerized polyaniline (PANI) on a CNFs/MEO MA/PEGMA hydrogel (PANI@CMP hydrogel) substrate. The PANI@CMP hydrogel exhibits temperature-tunable electrical conductivity due to the liner relationship between thermosensitivity and temperature of the CMP hydrogel substrate. Furthermore, the stiffness and elasticity of the resultant hydrogel after PANI introduction is enhanced via physical interactions, and the compression load is improved by 42%. A highly sensitive temperature sensor is therefore fabricated with PANI@CMP hydrogel as the flexible induction element, and this sensor achieves temperature monitoring from 20 to 60 °C. This new temperature-controllable conductive hydrogel has excellent mechanical properties, showing great potential for applications in flexible smart sensors, conductive fillers, and medical devices.

show abstract

Phase‐Separated Polyaniline/Graphene Composite Electrodes for High‐Rate Electrochemical Supercapacitors

Cited by 137 publications

References 37 publications

Polyaniline‐Modified Hierarchical Graphene Fiber for Ultrahigh‐Performance Electrochemical Supercapacitor with Carbon Fiber in Core as Current Collector

Polyaniline‐Modified Hierarchical Graphene Fiber for Ultrahigh‐Performance Electrochemical Supercapacitor with Carbon Fiber in Core as Current Collector

Metal Phosphides and Phosphates‐based Electrodes for Electrochemical Supercapacitors

A Temperature‐Controlled, Conductive PANI@CNFs/MEO₂MA/PEGMA Hydrogel for Flexible Temperature Sensors

Contact Info

Product

Resources

About

Phase‐Separated Polyaniline/Graphene Composite Electrodes for High‐Rate Electrochemical Supercapacitors

Cited by 137 publications

References 37 publications

Polyaniline‐Modified Hierarchical Graphene Fiber for Ultrahigh‐Performance Electrochemical Supercapacitor with Carbon Fiber in Core as Current Collector

Polyaniline‐Modified Hierarchical Graphene Fiber for Ultrahigh‐Performance Electrochemical Supercapacitor with Carbon Fiber in Core as Current Collector

Metal Phosphides and Phosphates‐based Electrodes for Electrochemical Supercapacitors

A Temperature‐Controlled, Conductive PANI@CNFs/MEO2MA/PEGMA Hydrogel for Flexible Temperature Sensors

Contact Info

Product

Resources

About

A Temperature‐Controlled, Conductive PANI@CNFs/MEO₂MA/PEGMA Hydrogel for Flexible Temperature Sensors