Multi-growth site graphene/polyaniline composites with highly enhanced specific capacitance and rate capability for supercapacitor application

Zheng, Xuewen; Yu, Hang; Xing, Ruiguang; Ge, Xin; Sun, He; Li, Ruihong; Zhang, Qiwei

doi:10.1016/j.electacta.2017.12.100

Cited by 74 publications

(34 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The GCD curve for the PANI-GO-nanocomposite at numerous current densities are depicted in Figure 5b and the specific capacitance values calculated from these curves are presented in Table 5. The drop in capacitance with a rise in the current density is the consequence of faradic redox reaction that proceeds for longer time in comparison to EDL capacitance and it cannot compete with the rate of current flow as the current density increases [43] However, the capacitance retention is 85% even at increased current density (50 A/g), thus showing an excellent rate capability due to the synergistic effects of PANI and GO [63]. The IR drop is not significant, which is because of the fact that GO is covalently connected to PANI, which promotes electron transfer during the process of interfacial redox reaction, thus reducing the energy loss [64].…”

Section: Galvanostatic Charge Discharge Analysismentioning

confidence: 99%

Study on Direct Synthesis of Energy Efficient Multifunctional Polyaniline–Graphene Oxide Nanocomposite and Its Application in Aqueous Symmetric Supercapacitor Devices

et al. 2020

View full text Add to dashboard Cite

The synthesis of promising nanocomposite materials can always be tricky and depends a lot on the method of synthesis itself. Developing such synthesis routes, which are not only simple but also can effectively catch up the synergy of the compositing material, is definitely a worthy contribution towards nanomaterial science. Carbon-based materials, such as graphene oxide, and conjugative polymers, such as conductive polyaniline, are considered materials of the 21st century. This study involves a simple one pot synthesis route for obtaining a nanocomposite of polyaniline and graphene oxide with synergistic effects. The study was carried out in a systematic way by gradually changing the composition of the ingredients in the reaction bath until the formation of nanocomposite took place at some particular reaction parameters. These nanocomposites were then utilized for the fabrication of electrodes for aqueous symmetric supercapacitor devices utilizing gold or copper as current collectors. The device manifested a good capacitance value of 264 F/g at 1 A/g, magnificent rate performance, and capacitance retention of 84.09% at a high current density (10 A/g) when gold sheet electrodes were used as the current collectors. It also showed a capacitance retention of 79.83% and columbic efficiency of 99.83% after 2000 cycles.

show abstract

Section: Galvanostatic Charge Discharge Analysismentioning

confidence: 99%

Study on Direct Synthesis of Energy Efficient Multifunctional Polyaniline–Graphene Oxide Nanocomposite and Its Application in Aqueous Symmetric Supercapacitor Devices

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Thus, it is urgent to explore and prepare the efficient eco‐friendly energy storage and conversion materials . Supercapacitors, an intriguing class of electrical energy source devices promising to replace the fossil fuel, have stimulated a great scientific interest in electrochemical energy storage and functional electronic devices . In order to obtain high‐performance electrode materials for supercapacitors, many researches have been developed, such as graphene, carbon nanofiber, metal oxides, and conducting polymers .…”

Section: Introductionmentioning

confidence: 99%

“…1 Supercapacitors, an intriguing class of electrical energy source devices promising to replace the fossil fuel, have stimulated a great scientific interest in electrochemical energy storage and functional electronic devices. 2,3 In order to obtain high-performance electrode materials for supercapacitors, many researches have been developed, such as graphene, carbon nanofiber, metal oxides, and conducting polymers. [4][5][6][7] Generally, supercapacitors are classified as electrical double-layer (EDL) capacitors and pseudocapacitors (or redox capacitors) based on their energy storage methods.…”

Section: Introductionmentioning

confidence: 99%

Morphology‐dependent electrochemical performance of nitrogen‐doped carbon dots@polyaniline hybrids for supercapacitors

et al. 2019

View full text Add to dashboard Cite

Summary In this work, the binary N‐CDs@PANI hybrids were fabricated by introducing zero‐dimensional nitrogen‐doped carbon dots (N‐CDs) into reticulated PANI. Firstly, N‐CDs were prepared by one‐pot microwave method, and then, the N‐CDs were introduced into in situ oxidative polymerization of aniline (ANI) monomer. The N‐CDs with abundant functional groups and high electronic cloud density played a significant role in guiding the polyaniline‐ordered growth into intriguing morphologies. Moreover, morphology‐dependent electrochemical performances of N‐CDs@PANI hybrids were investigated and N‐CDs improve static interaction and enhance the special capacitances in the N‐CDs@PANI hybrids. Especially, the specific capacitance of PC4 hybrid can reach 785 F g−1, which exceed that of pure PANI (274 F g−1) at current density of 0.5 A g−1 according to three‐electrode measurement. And the capacitance retention of the PC4 hybrid still keeps 70% after 2000 cycles of charge and discharge. The N‐CDs@PANI hybrids can have potential applications in electrode materials, supercapacitors, nonlinear optics, and microwave absorption.

show abstract

“…The specific capacitance and rate performance of graphene/PANI composites can be significantly improved by increasing the active sites of graphene. Zheng et al [65] developed a method for preparing a modified three-dimensional graphene/PANI hybrid electrode, as shown in Figure 5g,h. Specifically, they introduced carbon vacancy defects and oxygen functional groups into the surface of graphene nanosheets by acidic oxidative chemical treatment (70% HNO 3 /30% H 2 O 2 ) to prepare multi-growth sites of graphene.…”

Section: Properties and Applications Of Carbon/polyaniline Hybridsmentioning

confidence: 99%

Review on Carbon/Polyaniline Hybrids: Design and Synthesis for Supercapacitor

et al. 2019

View full text Add to dashboard Cite

Polyaniline has been widely used in high-performance pseudocapacitors, due to its low cost, easy synthesis, and high theoretical specific capacitance. However, the poor mechanical properties of polyaniline restrict its further development. Compared with polyaniline, functionalized carbon materials have excellent physical and chemical properties, such as porous structures, excellent specific surface area, good conductivity, and accessibility to active sites. However, it should not be neglected that the specific capacity of carbon materials is usually unsatisfactory. There is an effective strategy to combine carbon materials with polyaniline by a hybridization approach to achieve a positive synergistic effect. After that, the energy storage performance of carbon/polyaniline hybridization material has been significantly improved, making it a promising and important electrode material for supercapacitors. To date, significant progress has been made in the synthesis of various carbon/polyaniline binary composite electrode materials. In this review, the corresponding properties and applications of polyaniline and carbon hybrid materials in the energy storage field are briefly reviewed. According to the classification of different types of functionalized carbon materials, this article focuses on the recent progress in carbon/polyaniline hybrid materials, and further analyzes their corresponding properties to provide guidance for the design, synthesis, and component optimization for high-performance supercapacitors.

show abstract

Multi-growth site graphene/polyaniline composites with highly enhanced specific capacitance and rate capability for supercapacitor application

Cited by 74 publications

References 45 publications

Study on Direct Synthesis of Energy Efficient Multifunctional Polyaniline–Graphene Oxide Nanocomposite and Its Application in Aqueous Symmetric Supercapacitor Devices

Study on Direct Synthesis of Energy Efficient Multifunctional Polyaniline–Graphene Oxide Nanocomposite and Its Application in Aqueous Symmetric Supercapacitor Devices

Morphology‐dependent electrochemical performance of nitrogen‐doped carbon dots@polyaniline hybrids for supercapacitors

Review on Carbon/Polyaniline Hybrids: Design and Synthesis for Supercapacitor

Contact Info

Product

Resources

About