Expanded Graphite-Based Materials for Supercapacitors: A Review

Zhang, Dan; Tan, Chao; Zhang, Weizhuo; Pan, Weijie; Wang, Qi; Le, Li

doi:10.3390/molecules27030716

Cited by 52 publications

(27 citation statements)

References 79 publications

(125 reference statements)

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“…However, the electronic conductivity of MnO 2 is low, and conductive additives, such as MWCNT, are necessary for the fabrication of advanced electrodes [ 25 , 26 , 27 ]. Electrode microstructure and composition are important factors for the efficient electrochemical performance [ 28 , 29 , 30 , 31 ]. Good electrochemical performance must be achieved at high active mass loadings (AML) [ 32 ] in order to reduce the contribution of current collectors and other passive components to the total mass of electrodes and devices.…”

Section: Resultsmentioning

confidence: 99%

Application of Rhamnolipids as Dispersing Agents for the Fabrication of Composite MnO2-Carbon Nanotube Electrodes for Supercapacitors

Liang

Zhitomirsky

2022

Molecules

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The high theoretical capacitance of MnO2 renders it a promising material for the cathodes of asymmetric supercapacitors. The good dispersion of MnO2 and conductive additives in a nanocomposite electrode is a key factor for efficient electrode performance. This article describes, for the first time, the application of rhamnolipids (RL) as efficient natural biosurfactants for the fabrication of nanocomposite MnO2-carbon nanotube electrodes for supercapacitors. RL act as co-dispersants for MnO2 and carbon nanotubes and facilitate their efficient mixing, which allows for advanced capacitive properties at an active mass of 40 mg cm−2 in Na2SO4 electrolytes. The highest capacitance obtained from the cyclic voltammetry data at a scan rate of 2 mV s−1 is 8.10 F cm−2 (202.6 F g−1). The highest capacitance obtained from the galvanostatic charge–discharge data at a current density of 3 mA cm−2 is 8.65 F cm−2 (216.16 F g−1). The obtained capacitances are higher than the capacitances of MnO2-based electrodes of the same active mass reported in the literature. The approach developed in this investigation is simple compared to other techniques used for the fabrication of electrodes with high active mass. It offers advantages of using a biocompatible RL biosurfactant.

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Section: Resultsmentioning

confidence: 99%

Application of Rhamnolipids as Dispersing Agents for the Fabrication of Composite MnO2-Carbon Nanotube Electrodes for Supercapacitors

Liang

Zhitomirsky

2022

Molecules

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“…Reproduced with permission. [103] Reproduced under the terms of the CC BY 4.0 license. Copyrights 2022, Zhang et al (i) General CV curves of various SCs.…”

Section: Pseudocapacitorsmentioning

confidence: 99%

“…Copyrights 2019, Huang et al Schematic illustrations of (g) symmetric and (h) asymmetric HSCs. Reproduced with permission [103]. Reproduced under the terms of the CC BY 4.0 license.…”

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confidence: 99%

Recent Progress in Carbonaceous and Redox‐Active Nanoarchitectures for Hybrid Supercapacitors: Performance Evaluation, Challenges, and Future Prospects

Shah

Aziz

Yamani

2022

The Chemical Record

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Due to advancements in technology, the energy demand is becoming more intense with time. The rapid fossil fuels consumption and environmental concerns triggered intensive research for alternative renewable energy resources, including sunlight and wind. Yet, due to their time‐dependent operations, significant electric energy storage systems are required to store substantial energy. In this regard, electrochemical energy storage devices, like batteries and supercapacitors (SCs), have recently attracted much research attention. Recent developments in SCs demonstrated that hybrid SCs (HSCs), which combine the excellent properties of batteries and SCs, increase the specific energy, specific power, specific capacitance, and life span. Carbonaceous and redox‐active materials have been explored as efficient electrode materials for applications in HSCs, ultimately enhancing their electrochemical performances. The HSCs performance significantly depends on the porosity, specific surface area, and conductivity of the electrode materials. This review article gives an overview of recent advances in developing HSCs with high specific power, specific energy, and long cyclic‐life. The fabrication of various HSCs materials using carbonaceous and redox‐active nanoarchitectures and their characterization are explored in‐depth, including electrode development, basic principles, and device engineering. A proper investigation has been conducted regarding state‐of‐the‐art materials as HSC electrodes. This review focuses on the most up‐to‐date, cutting‐edge, electrode materials for HSCs and their performance. The possibilities for novel electrode materials and their impact on the HSCs performance for future energy storage are also discussed.

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“…SC are mainly composed by two identical electrodes acting as anode and cathode based on porous materials, normally carbonaceous (activated carbon, graphite, 28 ICP and others), on account of their high capacitances (up to 394 F g −1 ) 29 and large surface areas. They also possess an active layer, a separator for avoiding short‐circuits between the anode and cathode, and the current collectors (Figure 2B).…”

Section: Introduction Of Energy Storage Devices and Polymer Composite...mentioning

confidence: 99%

Last developments in polymers for wearable energy storage devices

Lage-Rivera

Ares‐Pernas

Abad

2022

Intl J of Energy Research

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Our modern and technological society requests enhanced energy storage devices to tackle the current necessities. In addition, wearable electronic devices are being demanding because they offer many facilities to the person wearing it. In this manuscript, a historical review is made about the available energy storage devices focusing on super-capacitors and lithium-ion batteries, since they currently are the most present in the industry, and the possible polymeric materials suitable on wearable energy storage devices. Polymers are a suitable option because they not only possess remarkable mechanical resistance, flexibility, long life-times, easy manufacturing techniques and low cost in addition to they can be environmentally friendly, nontoxic, and even biodegradable too. Moreover, the electrical and electrochemical polymer properties can be tunning with suitable fillers giving to versatile conducting polymer composites with a good cost and properties' ratio. Although the advances are promising, there are still many drawbacks that need to be overcome. Future research should focus on improving both the performance of materials and their processability on an industrial scale, where additive manufacturing offers many possibilities. The sustainability of new energy storage devices should not

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Expanded Graphite-Based Materials for Supercapacitors: A Review

Cited by 52 publications

References 79 publications

Application of Rhamnolipids as Dispersing Agents for the Fabrication of Composite MnO2-Carbon Nanotube Electrodes for Supercapacitors

Application of Rhamnolipids as Dispersing Agents for the Fabrication of Composite MnO2-Carbon Nanotube Electrodes for Supercapacitors

Recent Progress in Carbonaceous and Redox‐Active Nanoarchitectures for Hybrid Supercapacitors: Performance Evaluation, Challenges, and Future Prospects

Last developments in polymers for wearable energy storage devices

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