Graphene integrating carbon fiber and hierarchical porous carbon formed robust flexible “carbon-concrete” supercapacitor film

Zhang, Huinian; Li, Anni; Wang, Jie; Zhang, Yan; Zhao, Zheng; Zhao, Huifang; Cheng, Miao; Wang, Congwei; Wang, Junying; Zhang, Shouchun; Wang, Junzhong

doi:10.1016/j.carbon.2017.10.043

Cited by 45 publications

(20 citation statements)

References 33 publications

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“…Moreover, their estimated discharge capacitance value (154.1 Fg −1 ) at 1 Ag −1 is still comparatively small and the release period at 76.3 Whkg −1 is 120 s. Afterward, Yanwu Fig. 15 Internal structure and working principle of supercapacitors [142] et al [154] examined graphene super-capacitors, capacitance characteristics with the same ionic liquid. In addition, pseudo-capacitors with metal oxide and polymer graphene composites have been observed by many study organizations with enhanced efficiency involving faradic reactions [155].…”

Section: Transition Metal Oxides-graphene Compositesmentioning

confidence: 99%

A review on graphene based transition metal oxide composites and its application towards supercapacitor electrodes

Hussain

Ihrar

et al. 2020

SN Appl. Sci.

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Two-dimensional (2D) graphene and its outstanding properties such as, enormous conductivities, mechanical strength, optical and electrical properties brought it one of the most studied materials for the production of energy using renewable resources. The composites of graphene with the same morphological materials such as layered transition metal oxides will be the most aspiring combination to boost their conducting, optoelectronic and mechanical properties. Furthermore, the transition metal chalcogenides materials attracted significant attention due to their atomically thin layers and enormous optical, conducting and electrical properties. The layered materials offer mostly atomically thin 2D plane to the charge carrier with superior conducting properties. The thickness at atomic level, band gap, spin orbit coupling electronic and optoelectronics properties of transition metal dichalcogenides makes them one of the promising entities in energy harvesting technologies. The review suggests some strategies to improve the transition metals-composites stability conducting properties to be tailored in various applications.

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Section: Transition Metal Oxides-graphene Compositesmentioning

confidence: 99%

A review on graphene based transition metal oxide composites and its application towards supercapacitor electrodes

Hussain

Ihrar

et al. 2020

SN Appl. Sci.

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“…46−48 In addition to their flexible nature, they exhibit good electronic conductivity, high mechanical strength, excellent chemical and electrochemical stabilities, and lightweight. 49−52 They are used as either a substrate for depositing electrode-active material to synthesize supercapacitor electrodes or current collectors for supercapacitors. The unique features of CFs mentioned above help in obtaining high-flexibility and lightweight supercapacitors.…”

Section: Introductionmentioning

confidence: 99%

Two-Dimensional Mn₃O₄Nanowalls Grown on Carbon Fibers as Electrodes for Flexible Supercapacitors

2019

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Emerging flexible and wearable electronic devices necessitates the development of fiber-type energy storage devices to power them. Supercapacitors received great attention for applications in flexible and wearable devices due to their scalability, safety, and miniature size. Herein, we report the fabrication of a flexible supercapacitor using manganese(II,III) oxide (Mn 3 O 4 ) nanowalls (NWs) grown by electrochemical deposition on carbon fiber (CF) as electrode-active material. Here, CF serves as both a substrate for the growth of Mn 3 O 4 NWs and a current collector for making a lightweight supercapacitor. Two-dimensional Mn 3 O 4 NWs were uniformly grown on CF with high surface coverage. A three-dimensional nanostructured electrode is obtained using these individual two-dimensional Mn 3 O 4 NWs. The Mn 3 O 4 NWs grown on CF are characterized by scanning electron microscopy, energy-dispersive X-ray spectroscopy, X-ray diffraction, and Raman spectroscopy. A symmetric sandwich-type supercapacitor is fabricated using two-dimensional Mn 3 O 4 NW electrodes in an aqueous 1 M Na 2 SO 4 electrolyte. The Mn 3 O 4 NW supercapacitor electrode exhibits a specific capacitance of 300.7 F g –1 at a scan rate of 5 mV s –1 . The assembled symmetric sandwich-type supercapacitor displayed high flexibility even at a bending angle of 180° without altering its performance. The Mn 3 O 4 NW supercapacitor also displayed a long cycle life of 7500 cycles with 100% capacitance retention.

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“…These results further confirm that the hierarchical porous structure helps to maintain good capacitive behavior at high sweep rates, which is due to fast ionic transportation within the mesopores and short diffusion distance from mesopores to micropores. Adequate micropores help to increase the active sites, leading to an increase in the specific capacitance [35][36][37] . Therefore, the carbon products prepared at 450 °C have a hierarchical pore structure, and the special pore structure enables the supercapacitor to exhibit considerable energy density, power density, and excellent cyclic performance.…”

Section: Pore Texture Characterization Of the Carbon Materials Preparmentioning

confidence: 99%

The capacitive performances of carbon obtained from the electrolysis of CO2 in molten carbonates: Effects of electrolysis voltage and temperature

Tang

Dou

Yin

et al. 2020

Journal of Energy Chemistry

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Graphene integrating carbon fiber and hierarchical porous carbon formed robust flexible “carbon-concrete” supercapacitor film

Cited by 45 publications

References 33 publications

A review on graphene based transition metal oxide composites and its application towards supercapacitor electrodes

A review on graphene based transition metal oxide composites and its application towards supercapacitor electrodes

Two-Dimensional Mn₃O₄Nanowalls Grown on Carbon Fibers as Electrodes for Flexible Supercapacitors

The capacitive performances of carbon obtained from the electrolysis of CO2 in molten carbonates: Effects of electrolysis voltage and temperature

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Graphene integrating carbon fiber and hierarchical porous carbon formed robust flexible “carbon-concrete” supercapacitor film

Cited by 45 publications

References 33 publications

A review on graphene based transition metal oxide composites and its application towards supercapacitor electrodes

A review on graphene based transition metal oxide composites and its application towards supercapacitor electrodes

Two-Dimensional Mn3O4Nanowalls Grown on Carbon Fibers as Electrodes for Flexible Supercapacitors

The capacitive performances of carbon obtained from the electrolysis of CO2 in molten carbonates: Effects of electrolysis voltage and temperature

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Two-Dimensional Mn₃O₄Nanowalls Grown on Carbon Fibers as Electrodes for Flexible Supercapacitors