Fabrication of N,B‐codoped Graphene Aerogel/PPy Composites for Asymmetric Supercapacitor

Qing, Xin; Yu, J.; Lin, Jun; Zang, Yue

doi:10.1002/slct.202102995

Cited by 6 publications

(5 citation statements)

References 30 publications

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“…(b) CV curves and (c) GCD profiles of SC-PGW-SINCH. (d) Comparison of the specific capacitances of SC-PGW-SINCH with other solid-state or flexible supercapacitors. − (e) CV curves and (f) GCD profiles of a single and two SC-PGW-SINCH connected in series and parallel. (g) Capacitance stability of SC-PGW-SINCH at a current density of 1.0 A g –1 (inset: GCD profiles every 1000 cycles).…”

Section: Resultsmentioning

confidence: 99%

Flexible Wood Enhanced Poly(acrylic acid-co-acrylamide)/Quaternized Gelatin Hydrogel Electrolytes for High-Energy-Density Supercapacitors

Gao

Wei

et al. 2023

ACS Appl. Mater. Interfaces

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Hydrogels with good flexibility and strong hydrophilicity can be candidates for excellent flexible electrolyte materials. However, the poor structural stability, uncontrollable swelling, and lower potential window of hydrogel electrolytes need to be improved. This work combined quaternized gelatin with cross-linked poly(acrylic acid-co-acrylamide) to form a semiinterpenetrating network and gelatinized in situ in a flexible porous wood skeleton. The flexible wood (FW) skeleton enhances the hydrogel and limits the swelling of the hydrogel. In addition, quaternary ammonium groups and FW act synergistically to provide the composite hydrogel electrolyte with a high ionic conductivity of 5.57 × 10 −2 S cm −1 . The composite hydrogel electrolyte can enable the flexible supercapacitor to operate safely in a potential window of 0−2 V. The optimized supercapacitor has a high specific capacitance of 286.74 F g −1 and provides an outstanding energy density of 39.09 W h kg −1 . The flexible supercapacitor shows a capacitance retention of up to 94.6% after 10,000 charge−discharge cycles, indicating dramatic cycling stability. Simultaneously, a capacitance retention of nearly 90% can be maintained by the flexible supercapacitor after 180°bends for 1000 times. A viable idea for developing high-performance hydrogel electrolytes and flexible supercapacitors is provided in this research.

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Section: Resultsmentioning

confidence: 99%

Flexible Wood Enhanced Poly(acrylic acid-co-acrylamide)/Quaternized Gelatin Hydrogel Electrolytes for High-Energy-Density Supercapacitors

Gao

Wei

et al. 2023

ACS Appl. Mater. Interfaces

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“…At a current density of 0.6 A g À1 , its specific capacitance was 490.0 F g À1 , and it had good cycle stability with a capacitance retention rate of 5000 GCD cycles of 85.0%. Xin et al 93 adopted a facile and lowcost method to prepare N,B-co-doped graphene aerogel (NBGA)/PPy composites for asymmetric supercapacitors. Supercapacitors were based on a traditional sandwich structure composed of NBGA/trypan blue doped polypyrrole (PPy-TB) as anode material, polyvinyl acetate-sulfuric acid solid (PVA-H 2 SO 4 ) as the electrolyte, and PPy-TB as the cathode material.…”

Section: Polypyrrole Binary Compositesmentioning

confidence: 99%

Recent research progress of conductive polymer-based supercapacitor electrode materials

Duan

Liu

Zhao

2023

Textile Research Journal

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With the serious impact of fossil fuels on the environment and the rapid development of the global economy, the development of clean and usable energy storage devices has become one of the most important themes of sustainable development in the world today. Supercapacitors, known as ultracapacitors, have been supposed to be one of the most promising candidates to meet the requirements of human sustainable development, due to their advantages such as high capacity, high power density, high charging/discharging speed, long cycle life, and low processing cost. However, the low energy density of supercapacitors limits their large-scale application. Therefore, it is of great significance to develop high energy density supercapacitors and use them as power sources for practical devices. Conductive polymer-based electrode materials have unique advantages such as high theoretical capacitance, good conductivity, and good flexibility, and have high potential in supercapacitors. The research on conductive polymer-based electrode materials has promoted the rapid development of the field of supercapacitors. This review summarizes recent research progress on conductive polymers (including polypyrrole, polyaniline, and polythiophene), conductive polymer-based binary composites, and conductive polymer-based ternary and quaternary composites for supercapacitor electrodes. Furthermore, a summary of the use of conductive polymer-based textiles and fibers for flexible supercapacitors is also presented, along with the current challenges and future perspectives for conductive polymer-based supercapacitors.

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“…[4][5][6][7][8][9] On the other hand, Pseudocapacitors cover sulphides, oxides, hydroxides of metal, metal organic framework and conducting polymer and their composites. [10][11][12][13][14][15][16] Graphene has given comprehensive focus as a propitious EDLC electrode material, on account of its high theoretical specific surface area (2630 m 2 g À 1 ), improved intrinsic carrier mobility (2*10 5 cm 2 V À 1 s À 1 ), extraordinary thermal conductivity (5000 W m À 1 K À 1 ) and electrical conductivity which is extremely high (~106 S cm À 2 ). [17] Still, the restacking or aggregation due to the severe van der Waals attraction within the graphene sheets is inevitable and would prominently weaken the ionic-accessible surface area.…”

Section: Introductionmentioning

confidence: 99%

“…EDLCs include graphene, bio‐derived carbon, mesoporous carbon, ordered mesoporous carbon, CNFs, CNTs, and activated carbon [4–9] . On the other hand, Pseudocapacitors cover sulphides, oxides, hydroxides of metal, metal organic framework and conducting polymer and their composites [10–16] …”

Section: Introductionmentioning

confidence: 99%

Unveiled Supercapacitive Performance of Se‐doped Graphene Nanoarchitectonics Prepared via Supercritical Fluid Technique

et al. 2023

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Doping of graphene with variety of heteroatoms is presently focused for electrochemical supercapacitor applications because it functions as a hybrid supercapacitor. Herewith, we report the fabrication of Se‐doped graphene with selenium dioxide using a supercritical fluid technique. Both the existence as well as the quantity of Se‐doping in graphene are established using XPS and EDAX techniques. The Se‐doped graphene derived from the weight ratio of selenium dioxide and graphene oxide of 1 : 3 resulted in an enriched gravimetric capacitance achieving 581 F g−1 (1 M H2SO4). The specific capacity of the optimised Se‐doped graphene based symmetric supercapacitor in 0.01 M solution of ammonium metavanadate in 1 M H2SO4 solution is found to be 420 C g−1 and attained an improved capacitance retention of 85% over 50000 cycles along with 94% coulombic efficiency. The energy density of the Se‐doped graphene symmetric supercapacitor is found to be 23.33 Wh kg−1 in 0.01 M solution of ammonium metavanadate in 1 M H2SO4 solution.

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Fabrication of N,B‐codoped Graphene Aerogel/PPy Composites for Asymmetric Supercapacitor

Cited by 6 publications

References 30 publications

Flexible Wood Enhanced Poly(acrylic acid-co-acrylamide)/Quaternized Gelatin Hydrogel Electrolytes for High-Energy-Density Supercapacitors

Flexible Wood Enhanced Poly(acrylic acid-co-acrylamide)/Quaternized Gelatin Hydrogel Electrolytes for High-Energy-Density Supercapacitors

Recent research progress of conductive polymer-based supercapacitor electrode materials

Unveiled Supercapacitive Performance of Se‐doped Graphene Nanoarchitectonics Prepared via Supercritical Fluid Technique

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