New insights into the electrochemical behaviour of porous carbon electrodes for supercapacitors

Abouelamaiem, Dina Ibrahim; Mostazo‐López, María José; He, Guanjie; Patel, Drasti; Neville, Tobias P.; Parkin, Ivan P.; Lozano‐Castelló, Dolores; Morallón, Emilia; Cazorla‐Amorós, Diego; Sobrido, Ana Jorge; Wang, Rongfang; Ji, Shan; Titirici, Maria‐Magdalena; Shearing, Paul R.; Brett, Dan J. L.

doi:10.1016/j.est.2018.08.014

Cited by 50 publications

(30 citation statements)

References 49 publications

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“…Consequently, the carbonaceous species were removed by the acid treatment, resulting in the disappearance of the peaks (Figure 3d) [27]. C-O and COOH peaks in XPS curves were observed to decrease and increase, respectively, after KOH chemical activation of ACs [28]. In this study, the peaks related to the C-O and O-C=O also decreased and increased, respectively, after the chemical activation (Figure 3c,d; Table 2).…”

Section: Resultsmentioning

confidence: 51%

Regeneration of Activated Carbons Spent by Waste Water Treatment Using KOH Chemical Activation

Park¹,

Lee²,

Hong³

et al. 2019

Applied Sciences

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In this study, spent activated carbons (ACs) were collected from a waste water treatment plant (WWTP) in Incheon, South Korea, and regenerated by heat treatment and KOH chemical activation. The specific surface area of spent AC was 680 m2/g, and increased up to 710 m2/g through heat treatment. When the spent AC was activated by the chemical agent potassium hydroxide (KOH), the surface area increased to 1380 m2/g. The chemically activated ACs were also washed with acetic acid (CH3COOH) to compare the effect of ash removal during KOH activation. The low temperature N2 adsorption was utilized to measure the specific surface areas and pore size distributions of regenerated ACs by heat treatment and chemical activation. The functional groups and adsorbed materials on ACs were also analyzed by X-ray photoelectron spectroscopy and X-ray fluorescence. The generated ash was confirmed by proximate analysis and elementary analysis. The regenerated ACs were tested for toluene adsorption, and their capacities were compared with commercial ACs. The toluene adsorption capacity of regenerated ACs was higher than commercial ACs. Therefore, it is a research to create high value-added products using the waste.

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Section: Resultsmentioning

confidence: 51%

Regeneration of Activated Carbons Spent by Waste Water Treatment Using KOH Chemical Activation

Park¹,

Lee²,

Hong³

et al. 2019

Applied Sciences

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“…For NA0, C−C bonds of 284.8 eV predominates in investigations for C1s. By contrast, in the process of forming NA7, NA9, and NA11 according to the heat treatment, C−O bonding at 286 eV, C=O at 287 eV, and O−C=O bonding at 288.8 eV continue to increase [31–33] . Increasing the number of oxygen functional groups on the NA surface increases the polar component of the surface energy [34] .…”

Section: Resultsmentioning

confidence: 99%

“…By contrast, in the process of forming NA7, NA9, and NA11 according to the heat treatment, CÀ O bonding at 286 eV, C=O at 287 eV, and OÀ C=O bonding at 288.8 eV continue to increase. [31][32][33] Increasing the number of oxygen functional groups on the NA surface increases the polar component of the surface energy. [34] Therefore, it plays an important role in lowering the interfacial energy with lithium polysulfide, which is friendly to polar conductors.…”

Section: Resultsmentioning

confidence: 99%

Nano‐Conductive Additive with Low Interfacial Energy Confining the Movement of Lithium Polysulfide Solution Enables Stable Reaction of Sulfur Electrode in Lithium‐Sulfur Batteries

Won

Lee

Kwon

et al. 2022

Batteries & Supercaps

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With the increasing demand for green energy vehicles, lithiumsulfur batteries are drawing attention as new energy storage devices. This is because the theoretical capacity of sulfur cathodes is least five times higher that of conventional cathodes. However, in combination with lithium, sulfur cathodes diffuse to all parts of the cell through an uncontrolled and irreversible shuttle effect. Various studies have attempted to confine sulfur in a particular structure while it is dissolved in electrolytes. Unfortunately, this approach is ineffective because of the mobility and corrosive properties of lithium polysulfide. In this study, we present nano-conductive additives with minimized interfacial energy to lithium polysulfide that controls the shuttle effect by confining the movement of the lithium polysulfide solution within the cathodes. The nano-conductive additive was synthesized to form low interfacial energy through surface modification and used in lithium-sulfur batteries to enable a capacity of approximately 600 mAh g À 1 for 1000 repeated charge/discharge cycles.

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“…(Campbell, Ionescu et al 2015). Bir karbon malzemedeki gözenek boyutları ve gözenek dağılımı, iyi kapasitif performans elde edilmesi için hayati bir rol oynamaktadır (Abouelamaiem, Mostazo-López et al 2018, Raman, Mohan et al 2020. Ayrıca, mantarlardaki yüksek potasyum tuzu konsantrasyonu, gözenekleri daha fazla etkinleştirerek ve elektrotun enerji depolama kapasitesini kademeli olarak artırır ve zamanla elektrolit-aktif malzemenin artmasına sebep olur (Campbell, Ionescu et al 2015).…”

Section: 3elektrokimyasal çAlışmalarunclassified

Molibden Oksit, Pluronic®F127 ve Mantarın Lityum tetraborat/ITO Elektrotların Kapasitif Özelliklerine Etkilerinin İncelenmesi

Gür¹,

Ayhan²

2021

Afyon Kocatepe University Journal of Sciences and Engineering

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Günümüzde alternatif enerji üretim süreçleri, üretilen enerjinin verimli bir şekilde depolanması ve enerji kaynaklarının çevre dostu malzemelerden üretilmesi önemli araştırma konularıdır. Bu amaçla enerji depolamada kullanılacak süper kapasitörlerde elektrot materyali olarak iletken polimerler, grafite alternatif mantar gibi biyokütle katkıları ve geçiş metal oksitleri (GMO) elektrokimyasal olarak araştırılmıştır. Elektrot hazırlarken lityum tetraborat (LTB) doping tuzu olarak tercih edilmiştir. LTB'ye sırasıyla molibden oksit (MoO3), Pluronic®F127 ve mantar katkılanarak elektrotlar hazırlanmıştır. Hazırlanan elektrotların elektrokimyasal özellikleri uygulanan potansiyel aralığındaki akım yoğunluğu değişimi dikkate alınarak araştırılmış ve elde edilen bulgular LTB-MoO3-F127-Mantar/ITO elektrotun daha iyi elektrokimyasal enerji depolama kapasitesine sahip olduğunu göstermiştir. Elektrokimyasal çalışmalarda LTB-MoO3-F127-Mantar/ITO elektrotta LTB/ITO elektrota kıyasla yaklaşık 3,5 kat kapasitif etkinin artırıldığı ve elektrot çevrim ömrünün 20 çevrim sonrası %86 (anodik) ve %87 (katodik) oranlarında korunduğu gösterilmiştir. Bu çalışma ile süper kapasitör uygulamaları için uygun maliyetli, yüksek performanslı ve çevre dostu teknoloji olarak grafite alternatif önerilen mantar-karbon tabanlı anot teknolojisi geliştirmek amacıyla GMO, iletken polimer ve mantar katkılamasının optimize edilerek grafit anotların yerini alabileceği önerilmiştir.

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New insights into the electrochemical behaviour of porous carbon electrodes for supercapacitors

Cited by 50 publications

References 49 publications

Regeneration of Activated Carbons Spent by Waste Water Treatment Using KOH Chemical Activation

Regeneration of Activated Carbons Spent by Waste Water Treatment Using KOH Chemical Activation

Nano‐Conductive Additive with Low Interfacial Energy Confining the Movement of Lithium Polysulfide Solution Enables Stable Reaction of Sulfur Electrode in Lithium‐Sulfur Batteries

Molibden Oksit, Pluronic®F127 ve Mantarın Lityum tetraborat/ITO Elektrotların Kapasitif Özelliklerine Etkilerinin İncelenmesi

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