2019
DOI: 10.1002/er.4973
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A two‐dimensional material for high capacity supercapacitors: S‐doped graphene

Abstract: Summary In this work, sulfur‐doped graphene‐coated electrodes are prepared by cyclic voltammetry in different potential ranges and different cycles (from 10 to 50) for selective modification of electrodes by different functional groups. The prepared electrodes are characterized by spectroscopic, microscopic and electrochemical methods. In scanning electron microscopic analysis, formation of graphene layers and their porous structure have been determined. Electrochemical impedance spectroscopic and cyclic volta… Show more

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Cited by 66 publications
(47 citation statements)
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“…As concluded from Raman and XPS results, there is abundant graphitic and N, S co-doped carbon, which owns high electrical conductivity and can improve the charge transfer efficiency of electrocatalysts. 45,46 The contents of highly-conductive carbon species in the prepared samples follow a similar trend to that of charge transfer efficiency. It indicates that the highest degree of graphitization and content of N, S co-doped carbon in Ni60Fe40 S/NSC contributes much to its superior charge transfer efficiency during OER.…”
Section: Resultssupporting
confidence: 54%
See 1 more Smart Citation
“…As concluded from Raman and XPS results, there is abundant graphitic and N, S co-doped carbon, which owns high electrical conductivity and can improve the charge transfer efficiency of electrocatalysts. 45,46 The contents of highly-conductive carbon species in the prepared samples follow a similar trend to that of charge transfer efficiency. It indicates that the highest degree of graphitization and content of N, S co-doped carbon in Ni60Fe40 S/NSC contributes much to its superior charge transfer efficiency during OER.…”
Section: Resultssupporting
confidence: 54%
“…The R ct values increase with the Ni/Fe feeding molar ratio further decreasing from 60/40 to 40/60 (Figure S10B), indicating the decrease of charge transfer efficiency. As concluded from Raman and XPS results, there is abundant graphitic and N, S co‐doped carbon, which owns high electrical conductivity and can improve the charge transfer efficiency of electrocatalysts 45,46 . The contents of highly‐conductive carbon species in the prepared samples follow a similar trend to that of charge transfer efficiency.…”
Section: Resultssupporting
confidence: 53%
“…In our previous works, sulfur, chlorine and nitrogendoped binder-free graphene electrodes and graphenemodified pencil electrodes were prepared via Yucel's method and used in VRBs as positive electrodes. 22,[27][28][29][30] In the present study, simplified (one-pot), quick (within minutes) and environmentally friendly (sulphuric acid/water) electrochemical method was used to prepare binder-free covalently bonded sulfur-doped GO. Furthermore, a new functional group controllable GO production approach was represented by electrochemical treatment without destroying the graphite framework in this study.…”
Section: Introductionmentioning
confidence: 99%
“…Therefore, related equivalents for these electrodes were different (equivalent circuit "a" was proposed for the G and equivalent circuit "b" was proposed for the G/Ni and G/Ni/Ag). The equivalent circuits for the electrochemical impedance measurements were given in Figure 7 [76][77][78][79][80] and related values were presented in Table 2.…”
Section: Experimental Analysismentioning
confidence: 99%