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231225s2020 xx |||||o 00| ||eng c |
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|a 10.1016/j.wasman.2020.03.032
|2 doi
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|a pubmed24n1027.xml
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|a (DE-627)NLM308264169
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|a (NLM)32240941
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|a (PII)S0956-053X(20)30143-4
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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| 100 |
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|a Zhang, YanLei
|e verfasserin
|4 aut
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|a Porous carbon derived from herbal plant waste for supercapacitor electrodes with ultrahigh specific capacitance and excellent energy density
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|c 2020
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 14.04.2020
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|a Date Revised 14.04.2020
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Copyright © 2020 Elsevier Ltd. All rights reserved.
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|a Here in this work, porous carbon is prepared from waste of a traditional Chinese medicine Salvia miltiorrhiza flowers. Structures of the porous carbons are regulated by simply regulating of activation temperatures and dosages of activator. The optimized porous carbon owns a high specific surface area of 1715.3 m2 g-1 and total pore volume of 0.6392 cm3 g-1, together with a unique hierarchical architecture and ultrahigh content of 45.97 at% self-doped O and 0.49 at% of N. When used as electrode materials for supercapacitors, the prepared porous carbon exhibited excellent specific capacitance and energy density as well as fantastic cycle stability. Under a current density of 0.5 A/g, the electrode based on this material showed high specific capacitance of 530 F/g, with fantastic rate performance of 258 F/g at 20 A/g and excellent cycle stability of 91% capacitance retention for 10,000 cycles at 10 A/g in a three-electrode system in 6 M KOH. In assembled supercapacitors, the SF-PC700-3 based electrode worked under potential of 1 V and exhibited 222 F/g of specific capacitance at a current density of 0.5 A/g, and even when the current density was increased up to 30 A/g, the specific capacitance can still as high as 168 F/g, verified the excellent performance of SF-PC700-3. Symmetric supercapacitors in Na2SO4 and TEABF4/AN electrolyte showed voltage ranges of 1.8 V and 3 V respectively, and high energy density of 22.2 Wh Kg-1 at 448. W Kg-1 and 40.6 Wh Kg-1 at 755.8 W Kg-1 are obtained
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|a Journal Article
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|a High energy density
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|a Porous carbon
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|a Salvia miltiorrhiza flowers
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|a Supercapacitors
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|a Electrolytes
|2 NLM
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|a Carbon
|2 NLM
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|a 7440-44-0
|2 NLM
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|a Tang, ZhiShu
|e verfasserin
|4 aut
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|i Enthalten in
|t Waste management (New York, N.Y.)
|d 1999
|g 106(2020) vom: 01. Apr., Seite 250-260
|w (DE-627)NLM098197061
|x 1879-2456
|7 nnns
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|g volume:106
|g year:2020
|g day:01
|g month:04
|g pages:250-260
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|u http://dx.doi.org/10.1016/j.wasman.2020.03.032
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