Nanoporous carbon electrode from waste coffee beans for high performance supercapacitors

Rufford, Thomas E.; Hulicova‐Jurcakova, Denisa; Zhu, Zhonghua; Lu, Gao Qing

doi:10.1016/j.elecom.2008.08.022

Cited by 466 publications

(208 citation statements)

References 25 publications

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“…As mentioned above, for organic electrolyte the same value of 31 Whkg −1 has been reported in [38]. Energy density up to 20 Whkg -1 and specific capacitance as high as 368 Fg -1 in 1 M H 2 SO 4 has been reported in [45] due to distribution of nanopores of 2-4 nm and the presence of electrochemically active quinone oxygen groups and nitrogen functional groups. Remarkably stable operation of the cell at 1.2 V has been observed after 10000 cycles.…”

Section: Porous Carbon At Nanoscale Levelsupporting

confidence: 62%

Supercapacitors specialities - Materials review

Obreja

2014

AIP Conference Proceedings

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Section: Porous Carbon At Nanoscale Levelsupporting

confidence: 62%

Supercapacitors specialities - Materials review

Obreja

2014

AIP Conference Proceedings

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“…In recent studies, carbonaceous anode materials from biomass source, such as spongy pomelo peels [21], rice husk [22,23,24], rice straw [25], sugar cane bagasse [26], coffee beans [27], coconut shells [28], peanut shells [29], have become more and more attractive for their abundance, low cost, easy accessibility and environmental friendliness compared with other carbonaceous precursors. Given this, the application of biomass has received much attention in energy storage field.…”

Section: Introductionmentioning

confidence: 99%

Bean-dreg-derived carbon materials used as superior anode material for lithium-ion batteries

Xiang

Zhou

et al. 2016

Electrochimica Acta

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-dreg-derived carbon materials used as superior anode material for lithium-ion batteries, Electrochimica Acta http://dx.doi.org/10.1016/j.electacta. 2016.10.202 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. 3. The KOH-activated sample demonstrated enhanced electrochemical performance due to its high surface area and abundant mesoporous structure. Bean-dreg-derived carbon materials used as superior anode material for lithium-ion batteries AbstractThe structures of modified carbons from bean dregs were regulated via graphitization treatment and chemical activation. The microstructure and electrochemical performance were studied using X-ray diffraction, Raman spectrometer, SEM and TEM techniques. The electrochemical performance was investigated using electrochemical methods. After heat-treatment at 2800 O C, the obtained BDC-2800 possessed a high degree of graphitization and showed an outstanding cycling performance, delivering capacity decay from 423 to 396 mAh g -1 at 0.1 C after 100 cycles. The chemical-treated carbons also demonstrated enhanced electrochemical performance, especially for the KOH-treated sample. The BDC-K displayed superior specific charge capacity of 801 mAh g -1 at 0.1 C, and showed an impressive rate capability of 643 mAh g -1 at 1 C. In addition, this sample delivered capacity retention of 94%after 500 cycles at 1 C. This good electrochemical performance was mainly due to its high surface area and abundant mesoporous structure.

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“…Among the researches in EDLCs, it is an important field to develop electrode materials with large specific capacitance and high electrochemical stability [4]. Activated carbons (ACs) satisfy the basic requirements for the electrode materials of EDLCs due to its low cost, high surface area and large porosity [5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%