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Lignite-derived mesoporous N- and O-enriched carbon sheet: a low-cost promising electrode for high-performance electrochemical capacitors
Zhu S.2; Chen Q.2; Shi Y.2; Chen Z.2; Bao R.2; Zhou L.2; Hou L.2; Hui K.N.1; Yuan C.2
2016-03-01
Source PublicationJournal of Solid State Electrochemistry
ISSN14328488
Volume20Issue:3Pages:713-723
AbstractIn the work, we successfully fabricate mesoporous N- and O-enriched carbon (NOC) with adjustable porosity and specific surface area (SSA) by using low-cost lignite as a precursor coupled with general KOH or ZnCl activation for electrochemical capacitors (ECs). Physicochemical and electrochemical characterizations reveal that chemical activating agents influence significantly upon the specific morphology, pore structure, and electrochemical performance of the resultant products. Strikingly, KOH-activated NOC (NOC-K) sheets are endowed with high SSA of ∼1257 m g, large pore volume of 1.3 cm g, and optimized pore size of ∼3 nm, rendering its electrochemical capacitance superior to those of NOC and ZnCl-activated NOC (NOC-Z) in 6 M KOH. Thanks to its rich mesoporosity coupled with large electroactive SSA and heteroatom doping (N of ∼4.8 at.% and O of ∼23.3 at.%) effect, the NOC-K electrode yields even better electrochemical behaviors in 1 M HSO than those in 6 M KOH.
KeywordElectrochemical capacitors Faradaic contribution Hierarchical porosity N- and O-enriched carbon sheet
DOI10.1007/s10008-015-3100-8
URLView the original
Language英語
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Cited Times [WOS]:8   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionUniversity of Macau
Affiliation1.Universidade de Macau
2.Anhui University of Technology
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GB/T 7714
Zhu S.,Chen Q.,Shi Y.,et al. Lignite-derived mesoporous N- and O-enriched carbon sheet: a low-cost promising electrode for high-performance electrochemical capacitors[J]. Journal of Solid State Electrochemistry,2016,20(3):713-723.
APA Zhu S..,Chen Q..,Shi Y..,Chen Z..,Bao R..,...&Yuan C..(2016).Lignite-derived mesoporous N- and O-enriched carbon sheet: a low-cost promising electrode for high-performance electrochemical capacitors.Journal of Solid State Electrochemistry,20(3),713-723.
MLA Zhu S.,et al."Lignite-derived mesoporous N- and O-enriched carbon sheet: a low-cost promising electrode for high-performance electrochemical capacitors".Journal of Solid State Electrochemistry 20.3(2016):713-723.
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