Oxygen-enriched crumpled graphene-based symmetric supercapacitor with high gravimetric and volumetric performances

Zhu, Jiajia; Dong, Shengyang; Xu, Yunling; Guo, Hongshuai; Lu, Xiaoxia; Zhang, Xiaogang

doi:10.1016/j.jelechem.2018.11.032

Cited by 21 publications

(3 citation statements)

References 55 publications

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“…It was noticed that R ct increased significantly after the cycle test, which is common in many such instances depending on various factors associated with electrode–electrolyte interactions. The obtained capacitance, energy density, and power density (both volumetric and gravimetric) of the HP-NGC//HP-NGC device were then compared with various other reported carbon-based symmetric devices in Figure f,g ,,− and Table S2, which finally established the superiority of the current symmetric SC over the other devices.…”

Section: Resultsmentioning

confidence: 82%

Mechanochemically Assisted Microwave-Induced Plasma Synthesis of a N-Doped Graphitic Porous Carbon-Based Aqueous Symmetric Supercapacitor with Ultrahigh Volumetric Capacitance and Energy Density

Samanta Roy Choudhury,

Kumar,

Gupta

et al. 2024

ACS Appl. Electron. Mater.

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Section: Resultsmentioning

confidence: 82%

Mechanochemically Assisted Microwave-Induced Plasma Synthesis of a N-Doped Graphitic Porous Carbon-Based Aqueous Symmetric Supercapacitor with Ultrahigh Volumetric Capacitance and Energy Density

Samanta Roy Choudhury,

Kumar,

Gupta

et al. 2024

ACS Appl. Electron. Mater.

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“…Power density and energy density are important elements for practical applications. Ragone plots of the symmetric supercapacitors and other symmetric supercapacitors based on various carbons are illustrated in Figure 7F 28,29,36,39‐41 . The maximum energy density of our symmetric supercapacitor was 36.32 Wh kg −1 at a power density of 500.02 W kg −1 .…”

Section: Resultsmentioning

confidence: 93%

“…Ragone plots of the symmetric supercapacitors and other symmetric supercapacitors based on various carbons are illustrated in Figure 7F. 28,29,36,[39][40][41] The maximum energy density of our symmetric supercapacitor was 36.32 Wh kg À1 at a power density of 500.02 W kg À1 . Furthermore, the maximum power density was around 10 kW kg À1 at an energy density of 14.85 Wh kg À1 .…”

Section: Electrochemical Characterization Of C-srgomentioning

confidence: 95%

Structural control of crumpled sulfur‐assisted reduced graphene oxide with elemental sulfur for supercapacitor

Hwang

Kim

Jin

et al. 2021

Intl J of Energy Research

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Summary Crumpled graphene oxide (C‐GO), a three‐dimensional (3D) structured material, has many advantages that can be of value in high‐performance supercapacitor electrodes. However, graphene oxide loses its morphology and advantages during the solution reduction process with polar solvents, which leads to restacking of individual sheets. In this work, we introduce an eco‐friendly and simple C‐GO reduction method using elemental sulfur. Since sulfur is a nonpolar and antisolvent for the hydrophilic C‐GO, sulfur avoid interacting with the various groups of C‐GO that contains oxygen. Therefore, sulfur can be used as a reducing agent for C‐GO without destroying its crumpled structure. Moreover, when C‐GO is reduced by sulfur (crumpled sulfur‐assisted reduced graphene oxide [C‐SrGO]), it is assisted with sulfur molecules, which provide active sites for electrochemical reactions. Even better, sulfur can be used in place of hydrazine, which is a very toxic and unstable material. The structural and chemical advantages of C‐SrGO resulted in better electrochemical performance than C‐GO reduced by hydrazine (crumpled hydrazine‐reduced graphene oxide [C‐HrGO]). The C‐SrGO exhibited 260 F g−1 and the symmetric full cell remained above 88% of full capacity after 15 000 cycles. The results of our research demonstrate its potential as an electrode material for many various energy storage systems which are supercapacitors, catalysts, and lithium batteries.

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Advances on Emerging Materials for Flexible Supercapacitors: Current Trends and Beyond

Benzigar

Dasireddy²,

Guan

et al. 2020

Adv Funct Materials

109

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The progressive size reduction of electronic components is experiencing bottlenecks in shrinking charge storage devices like batteries and supercapacitors, limiting their development into wearable and flexible zero-pollution technologies. The inherent long cycle life, rapid charge-discharge patterns, and power density of supercapacitors rank them superior over other energy storage devices. In the modern market of zero-pollution energy devices, currently the lightweight formula and shape adaptability are trending to meet the current requirement of wearables. Carbon nanomaterials have the potential to meet this demand, as they are the core of active electrode materials for supercapacitors and texturally tailored to demonstrate flexible and stretchable properties. With this perspective, the latest progress in novel materials from conventional carbons to recently developed and emerging nanomaterials toward lightweight stretchable active compounds for flexi-wearable supercapacitors is presented. In addition, the limitations and challenges in realizing wearable energy storage systems and integrating the future of nanomaterials for efficient wearable technology are provided. Moreover, future perspectives on economically viable materials for wearables are also discussed, which could motivate researchers to pursue fabrication of cheap and efficient flexible nanomaterials for energy storage and pave the way for enabling a widerange of material-based applications.

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Oxygen-enriched crumpled graphene-based symmetric supercapacitor with high gravimetric and volumetric performances

Cited by 21 publications

References 55 publications

Mechanochemically Assisted Microwave-Induced Plasma Synthesis of a N-Doped Graphitic Porous Carbon-Based Aqueous Symmetric Supercapacitor with Ultrahigh Volumetric Capacitance and Energy Density

Mechanochemically Assisted Microwave-Induced Plasma Synthesis of a N-Doped Graphitic Porous Carbon-Based Aqueous Symmetric Supercapacitor with Ultrahigh Volumetric Capacitance and Energy Density

Structural control of crumpled sulfur‐assisted reduced graphene oxide with elemental sulfur for supercapacitor

Advances on Emerging Materials for Flexible Supercapacitors: Current Trends and Beyond

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