Electrochemical characterization of activated carbon-sulfur composite electrode in organic electrolyte solution

Kim, Dong‐Young; Park, Soo‐Jin; Jung, Yongju; Kim, Seok

doi:10.5714/cl.2013.14.2.126

Cited by 2 publications

(2 citation statements)

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“…These carbons are prepared by physical activation (gasification of a char in oxidizing gases), or by chemical activation (carbonization of carbonaceous materials impregnated with chemical reagents). In addition to serving as an adsorbent, high porosity carbons have recently been used in the manufacture of high-performance double layer capacitors and lithium-ion batteries [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Comparative studies of porous carbon nanofibers by various activation methods

Lee¹,

Kang²,

An³

et al. 2013

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In this study, activated carbons nanofibers (ACNFs) were prepared from polyacrylonitrilebased nanofibers by physical (H 2 O and CO 2 ) and chemical (KOH) activation. The surface and structural characteristics of the porous carbon were observed by scanning electron microscopy and X-ray diffraction, respectively. Pore characteristics were investigated by N 2 /77K adsorption isotherms. The specific surface area of the physically ACNFs was increased up to 2400 m 2 /g and the ACNFs were found to be mainly composed of micropore structures. Chemical activation using KOH produced ACNFs with high specific surface area (up to 2500 m 2 /g), and the micropores were mainly found in the ACNFs. The physically and chemically ACNFs showed both mainly type I from the International Union of Pure and Applied Chemistry classification.

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Section: Introductionmentioning

confidence: 99%

Comparative studies of porous carbon nanofibers by various activation methods

Lee¹,

Kang²,

An³

et al. 2013

Carbon letters

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“…Among these carbon materials, GNS can open new possibilities because of their high electrical conductivity, superior mechanical flexibility, high chemical and thermal stability, high surface functionality, and large surface area [13][14][15][16][17][18][19]. to dimethylformaide solution [21]. The mixture was stirred until the salt was dissolved completely.…”

Section: Introductionmentioning

confidence: 99%

Study on electrochemical performances of sulfur-containing graphene nanosheets electrodes for lithium-sulfur cells

Son¹,

Kim

2014

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Due to their morphology, electrochemical stability, and function as a conducting carbon matrix, graphene nanosheets (GNS) have been studied for their potential roles in improving the performance of sulfur cathodes. In this study, a GNS/sulfur (GNS/S) composite was prepared using the infiltration method with organic solvent. The structure, morphology and crystallinity of the composites were examined using scanning electron microscopy, transmission electron microscopy, and X-ray diffraction. The electrochemical properties were also characterized using cyclic voltammetry (CV). The CV data revealed that the GNS/S composites exhibited enhanced specific-current density and ~10% higher capacity, in comparison with the S-containing, activated-carbon samples. The composite electrode also showed better cycling performance for multiple charge/discharge cycles. The improvement in the capacity and cycling stability of the GNS/S composite electrode is probably related to the fact that the graphene in the composite improves conductivity and that the graphene is well dispersed in the composites.

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Electrochemical characterization of activated carbon-sulfur composite electrode in organic electrolyte solution

Cited by 2 publications

References 20 publications

Comparative studies of porous carbon nanofibers by various activation methods

Comparative studies of porous carbon nanofibers by various activation methods

Study on electrochemical performances of sulfur-containing graphene nanosheets electrodes for lithium-sulfur cells

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