Study of the structure-properties relations of carbon spheres affecting electrochemical performances of EDLCs

Kim, Hee Soo; Abbas, Muhammad A.; Kang, Min Seok; Kyung, Hyuna; Bang, Jin Ho; Yoo, Won Cheol

doi:10.1016/j.electacta.2019.02.121

Cited by 50 publications

(20 citation statements)

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“…Supercapacitors are classified into two types [44][45][46][47][48] based on their energy storage mechanisms: electric double layer capacitor (EDLC) [54,55] and pseudocapacitor [56,57].…”

Section: 2 Charge Storage Mechanism Of Supercapacitorsmentioning

confidence: 99%

Comprehensive Insight into the Mechanism, Material Selection and Performance Evaluation of Supercapatteries

et al. 2020

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HIGHLIGHTS• This article reviewed the recent progress on material challenges, charge storage mechanism, and electrochemical performance evaluation of supercapatteries.• Supercapatteries bridge the gap between supercapacitors (low energy density) and batteries (low power density). Fig. 1 a Ragone plot of various electrochemical energy conversion and storage devices [43]. b Schematic illustration of charge storage mechanism of EDL capacitor in porous carbon electrode. c Representation of EDLC structures: Helmholtz model, Gouy-Chapman model and Gouy-Chapman-Stern model. Schematic representation of the charge storage mechanisms in pseudocapacitor; d Intercalation (bulk redox) and e surface redox Nano-Micro Lett.(2020) 12:85Page 5 of 46 85 Table 1 Classification of various energy storage devices according to their charge storage mechanisms NFCS non-Faradaic capacitive storage = EDLC storage, CFS capacitive Faradaic storage = pseudocapacitive storage, NCFS non-capacitive Faradaic storage = battery-type storage Device Supercapattery Battery Supercapacitor Hybrid supercapacitor EDLC Pseudocapacitors

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“…Supercapacitors are classified into two types [44][45][46][47][48] based on their energy storage mechanisms: electric double layer capacitor (EDLC) [54,55] and pseudocapacitor [56,57].…”

Section: 2 Charge Storage Mechanism Of Supercapacitorsmentioning

confidence: 99%

Comprehensive Insight into the Mechanism, Material Selection and Performance Evaluation of Supercapatteries

et al. 2020

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“…Designing appropriate pore structure and pore size distribution for the AC materials to reduce the ionic diffusion resistance is prioritized in terms of improving electrochemical performance, because carbon materials usually possess good electron conductivity. [6] Generally, AC materials with the "labyrinth" of channel structure have high ionic diffusion resistance. [7] It is necessary to simplify the pore structure.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Size‐Controllable Lignin‐Based Nanosperes and Its Application in Electrical Double Layer Capacitors

et al. 2020

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As one of the most popular biomass materials, lignin is mainly used for incineration for providing heat. However, the large amount of CO2 emission results in serious environmental pollutions. To avoid the environmental issues, the transformation of lignin into high value‐added products has attracted increasing attention. In this study, a simple strategy is introduced to prepare lignin‐based nanospheres in acetone/water binary solution and the mechanisms related to the particle formation and particle size‐control are studied. By adjusting the ratio of solvent (acetone/water =55%‐95%) and the initial concentration of lignin (0.25%‐2.5%), the particle size of lignin microspheres ranges from 100 nm to 4 μm. After activation, the lignin microspheres with high specific surface area (2566 m2 g−1) and suitable pore size distribution are applied in electrical double layer capacitors (EDLCs). Among all the prepared samples, the activated lignin microspheres in nanoscale exhibit the best electrochemical performance in EDLCs. It displays a high gravimetric specific capacitance of 147 and 150 F g−1 at the current density of 0.05 A g−1, and maintains 117 and 108 F g−1 even at the higher current density of 10 A g−1 in 1 M TEABF4/PC electrolyte and [EMIM]BF4 ionic liquid, respectively. Therefore, the activated lignin‐based nanospheres can realize the high value‐added utilization of lignin, and have great prospects in the field of energy storage.

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“…are produced using a variety of chemical methodologies (e.g., solution or vapour phase synthesis) on a vast scale, however, their green synthesis from renewable resources, [ 651 ] or replacement with natural conducting or semiconducting polymers such as melanins has not yet been explored fully. [ 407,425,620,652–654 ] However, proof of concept has been shown for the application of melanins in a variety of common electronic components, including (but not limited to): batteries [ 393,655–660 ] (e.g., natural Sepia officinalis melanin‐based batteries, see Figure ), [ 657 ] capacitors [ 661–667 ] (e.g., synthetic melanin‐based capacitors, see Figure ), [ 665 ] light emitting diodes [ 424,668–670 ] (e.g., synthetic melanin‐inspired DHI/polystyrene sulfonate‐based LEDs, see Figure ), [ 669 ] memory, [ 424,671 ] photoelectrodes for solar water splitting, [ 672,673 ] solar cells, [ 674–676 ] and transistors. [ 424,425,677–681 ]…”

Section: Melanins For a Sustainable Futurementioning

confidence: 99%

Melanins as Sustainable Resources for Advanced Biotechnological Applications

et al. 2020

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Melanins are a class of biopolymers that are widespread in nature and have diverse origins, chemical compositions, and functions. Their chemical, electrical, optical, and paramagnetic properties offer opportunities for applications in materials science, particularly for medical and technical uses. This review focuses on the application of analytical techniques to study melanins in multidisciplinary contexts with a view to their use as sustainable resources for advanced biotechnological applications, and how these may facilitate the achievement of the United Nations Sustainable Development Goals.

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Study of the structure-properties relations of carbon spheres affecting electrochemical performances of EDLCs

Cited by 50 publications

References 50 publications

Comprehensive Insight into the Mechanism, Material Selection and Performance Evaluation of Supercapatteries

Comprehensive Insight into the Mechanism, Material Selection and Performance Evaluation of Supercapatteries

Synthesis of Size‐Controllable Lignin‐Based Nanosperes and Its Application in Electrical Double Layer Capacitors

Melanins as Sustainable Resources for Advanced Biotechnological Applications

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