Self-healing polyaniline-graphene oxides based electrodes with enhanced cycling stability

Wang, Weijie; Yan, Jian; Liu, Jiaqin; Ou, Dawei; Qin, Qingqing; Lan, Binbin; Ning, Yu; Zhou, Dan; Wu, Yucheng

doi:10.1016/j.electacta.2018.06.121

Cited by 28 publications

(19 citation statements)

References 32 publications

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“…The SHPs can be obtained based on Leibler's method. [ 85–87 ] This method employs carboxylic‐acid ends to attach functional groups (amidoethyl imidazolidone, di(amido ethyl)urea, and diamido tetraethyl triurea), forming SHPs based on multiple hydrogen bonds. [ 88 ] The structure stability of PANI/GO electrodes was improved by hydrogen‐bond‐based SHPs coating, leading to increased cycling life (≈97.5% capacitance retention after 9000 cycles) of the full SCs device.…”

Section: Multifunctional Applications Of Electrochemical Supercapacitorsmentioning

confidence: 99%

Electrochemical Supercapacitors: From Mechanism Understanding to Multifunctional Applications

Chen

Lee

2020

Advanced Energy Materials

142

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Electrochemical supercapacitors (SC) with high power and long cycle life have been extensively studied and applied in certain areas. However, a majority of the efforts have been devoted to developing SCs with improved performance through novel electrode/electrolytes design. The full mechanistic understanding of SCs based on different electrode materials has not yet been realized. In addition, exploration of new functions for SCs to widen their applications must be accelerated. In this essay, the use of advanced characterization methods (in situ X‐ray diffraction, in situ X‐ray scattering, in situ atomic force microscopy, in situ nuclear magnetic resonance, in situ Raman/infrared spectroscopy, electrochemical quartz crystal microbalance, scanning electrochemical microscopy, etc.) to unveil the electrochemical process of SCs from different aspects will be discussed. The working principles, information to be extracted, and case studies of respective methods will be presented. The multipronged mechanism studies of electrode properties inspire and enable exploration of extra functions within the same electrochemical SCs. Realization of mechanically deformable, low‐temperature, color tunable, self‐healable, and self‐chargeable SCs; integrated SC‐sensors; and SC‐actuators with adoption of new electrode/electrolyte/current collectors/configurations are showcased. The remaining issues hindering the wide exploitation of SCs and the future development trend of SCs are also discussed.

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Section: Multifunctional Applications Of Electrochemical Supercapacitorsmentioning

confidence: 99%

Electrochemical Supercapacitors: From Mechanism Understanding to Multifunctional Applications

Chen

Lee

2020

Advanced Energy Materials

142

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“…These synthetic methods give graphene excellent structure and electrochemical properties, such as high specific surface area (~2630 m 2 g −1 ), high electrical conductivity (~10 6 S cm −1 ) at room temperature, stable electrochemical properties, and high theoretical specific capacitance (~550 F g −1 ), which make it a promising material for supercapacitors [45]. Recently, a variety of novel work has been published on graphene and PANI composites, showing new or highly improved properties [46,47,48,49,50,51,52,53,54,55,56,57,58,59,60]. The combination of graphene and PANI on the nanometer scale can induce positive synergistic effects, which can fully utilize the stable EDLC of graphene and the high PC of PANI.…”

Section: Properties and Applications Of Carbon/polyaniline Hybridsmentioning

confidence: 99%

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

et al. 2019

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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.

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“…However, the widespread disadvantage of relative low conductivity in organic electrode essentially limits the full utilization of their electrochemical active sites, resulting in a lower specific capacity than predicted by theory. At the same time, it seems inevitable that the organic electrode material will gradually dissolve into the liquid electrolyte, resulting in continuous consumption of the active material during the long cycling [54][55][56].…”

Section: Introductionmentioning

confidence: 99%