Three dimensional heteroatom-doped carbon composite film for flexible solid-state supercapacitors

RSC Advances ◽  
2016 ◽  
Vol 6 (6) ◽  
pp. 4483-4489 ◽  
Author(s):  
Ben-Xue Zou ◽  
You Gao ◽  
Bo Liu ◽  
Yongpeng Yu ◽  
Yanhua Lu
Keyword(s):  
Molecular Weight ◽  
Solid State ◽  
Composite Film ◽  
Active Carbon ◽  
Resin Composite ◽  
Three Dimensional ◽  
Carbon Composite ◽  
Low Molecular Weight ◽  
Supercapacitor Electrode ◽  
Flexible Supercapacitor

Three dimensional (3D) heteroatom-doped active carbon as a flexible supercapacitor electrode is explored with a starting material of silkworm fibers and low molecular weight phenol resin composite.

γ-Ray Irradiation Practical Conditions for Low Molecular Weight Chitosan Material Production

2003 ◽  
Vol 792 ◽  
Author(s):  
Rangrong Yoksan ◽  
Mitsuru Akashi ◽  
Mikiji Miyata ◽  
Siriratana Biramontri ◽  
Suwabun Chirachanchai
Keyword(s):  
Molecular Weight ◽  
Acetic Acid ◽  
Solid State ◽  
Primary Structure ◽  
Low Molecular Weight ◽  
Aqueous Acetic Acid ◽  
Low Molecular Weight Chitosan ◽  
Backbone Structure ◽  
Γ Ray ◽  
Terminal Chain

ABSTRACTThe present work focuses on the γ-ray irradiation doses and conditions (dry solid state, solid state dispersing in 0.5–2 % aqueous H2O2 solution, solid state dispersing in 1% aqueous acetic acid, and 2% aqueous K2S2O8) to determine the level that the molecular weight of chitosan is lowered significantly without changing its primary structure. Molecular weight of chitosan (105-106 Dalton) is reduced approximately 50% under the γ-ray dose of 20 kGy in the dry solid state. The decrease in molecular weight is enhanced up to 80% when chitosan is suspended in 0.5–2 % aqueous H2O2 solution during γ-ray irradiation. In either condition, the backbone structure of the irradiated product is maintained with little change in the terminal chain. In the cases of (i) chitosan suspended in 2% aqueous K2S2O8 and (ii) chitosan in 1% aqueous acetic acid, chitosans lose their primary structures and physical properties.

Three dimensional iron oxide/graphene aerogel hybrids as all-solid-state flexible supercapacitor electrodes

RSC Advances ◽  
2016 ◽  
Vol 6 (64) ◽  
pp. 58994-59000 ◽  
Author(s):  
Abdul Muqsit Khattak ◽  
Huajie Yin ◽  
Zahid Ali Ghazi ◽  
Bin Liang ◽  
Azhar Iqbal ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Solid State ◽  
Specific Capacitance ◽  
Electrode Materials ◽  
Three Dimensional ◽  
High Specific Capacitance ◽  
Graphene Aerogel ◽  
Flexible Supercapacitor

Three dimensional iron oxide/graphene aerogel hybrid (Fe2O3/GA) was synthesized and used as electrode materials in flexible supercapacitor devices, which show high specific capacitance of 440 F g−1 with 89% capacitance retention after 2200 cycles.

A diffusion wake model for tracer ultrastructure-permeability studies in microvessels

1995 ◽  
Vol 269 (6) ◽  
pp. H2124-H2140 ◽  
Author(s):  
B. M. Fu ◽  
F. E. Curry ◽  
S. Weinbaum
Keyword(s):  
Molecular Weight ◽  
Three Dimensional ◽  
Threshold Concentration ◽  
Time Dependent ◽  
Surrounding Tissue ◽  
Low Molecular Weight ◽  
Electron Microscopic ◽  
Small Pore ◽  
Tissue Space ◽  
Transvascular Exchange

We developed a time-dependent diffusion model for analyzing the concentration profiles of low-molecular-weight tracers in the interendothelial clefts of the capillary wall that takes into account the three-dimensional time-dependent filling of the surrounding tissue space. The model provides a connecting link between two methods to investigate transvascular exchange: electron-microscopic experiments to study the time-dependent wake formed by low-molecular-weight tracers (such as lanthanum nitrate) on the tissue side of the junction strand discontinuities in the interendothelial cleft of frog mesentery capillaries (R. H. Adamson and C. C. Michel. J. Physiol. Lond. 466: 303-327, 1993) and confocal-microscopic experiments to measure the spread of low-molecular-weight fluorescent tracers in the tissue space surrounding these microvessels (R. H. Adamson, J. F. Lenz, and F. E. Curry, Microcirculation 1: 251-265, 1994). We show that the interpretation of the presence of tracer as an all-or-none indication of a pathway across the junctional strand is likely to be incorrect for small solutes. Large-pore pathways, in which the local tracer flux densities are high, reach a threshold concentration for detection and are likely to be detected after relatively short perfusion times, whereas distributed small-pore pathways may not be detected until the tissue concentrations surrounding the entire vessel approach threshold concentrations. The analysis using this approach supports the hypothesis advanced by Fu et al. (J. Biomech. Eng. 116: 502-513, 1994) that the principal pathways for water and solutes of < 1.0 nm diameter across the interendothelial cleft may be different and suggests new experiments to test this hypothesis.

A ternary MnO2-deposited RGO/lignin-based porous carbon composite electrode for flexible supercapacitor applications

2019 ◽  
Vol 43 (35) ◽  
pp. 14084-14092 ◽  
Author(s):  
Linlin Cui ◽  
Chen Cheng ◽  
Feng Peng ◽  
Yupeng Yang ◽  
Yue Li ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Composite Film ◽  
Reduced Graphene Oxide ◽  
Porous Carbon ◽  
Composite Electrode ◽  
Carbon Composite ◽  
Flexible Supercapacitor ◽  
Reduced Graphene ◽  
Carbon Composite Electrode ◽  
Supercapacitor Applications

MnO2 nanoparticles were successfully synthesized on a reduced graphene oxide/lignin-based porous carbon (RGO/PC) composite film by a simple electrodeposition method, and a ternary RGO/PC/MnO2 composite electrode for flexible supercapacitors was prepared.

scholarly journals An all solid-state Li ion battery composed of low molecular weight crystalline electrolyte

RSC Advances ◽  
2020 ◽  
Vol 10 (15) ◽  
pp. 8780-8789 ◽  
Author(s):  
Prerna Joshi ◽  
Raman Vedarajan ◽  
Anjaiah Sheelam ◽  
Kothandaraman Ramanujam ◽  
Bernard Malaman ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Solid State ◽  
Lewis Acid ◽  
Low Molecular Weight ◽  
Li Ion Battery ◽  
Acid Base ◽  
Base Interaction ◽  
Li Ion ◽  
Acid Base Interaction

A non-polymer crystalline organoboron electrolyte results in the formation of nano-channels for directional conduction of Li ions, owing to presence of boron, allowing Lewis acid–base interaction.

A stable and efficient quasi-solid-state dye-sensitized solar cell with a low molecular weight organic gelator

2012 ◽  
Vol 5 (3) ◽  
pp. 6151 ◽  
Author(s):  
Qingjiang Yu ◽  
Cuiling Yu ◽  
Fengyun Guo ◽  
Jinzhong Wang ◽  
Shujie Jiao ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Solar Cell ◽  
Solid State ◽  
Dye Sensitized Solar Cell ◽  
Low Molecular Weight ◽  
Dye Sensitized

Chromatographic Fractionation of Some Synthetic Elastomers

1948 ◽  
Vol 21 (3) ◽  
pp. 682-683 ◽  
Author(s):  
Ivan Landler
Keyword(s):  
Molecular Weight ◽  
Cellulose Acetate ◽  
Active Carbon ◽  
Low Molecular Weight ◽  
High Polymer ◽  
Acrylonitrile Copolymer ◽  
Molecular Weights ◽  
The Mean ◽  
Mean Molecular Weight ◽  
Poor Solvent

Abstract Mark and Saito were the first to fractionate a high polymer (cellulose acetate) by chromatographic adsorption on blood carbon. They found that molecules of low molecular weight were adsorbed first, and that the mean molecular weight of the product which remained unadsorbed was higher than the original molecular weight. Levi and Giera confirmed this result, but did not succeed in fractionating Buna-S or polyisoprene, for these polymers were eluted by the solvent during the washing operation in the column. The present authors have carried out further experiments in this field with a study of three commercial synthetic elastomers, viz., GR-S (butadienestyrene copolymer), Perbunan-N (butadiene-acrylonitrile copolymer), and Visitanex (polyisobutylene). The polymer was adsorbed by starting with a poor solvent composed of a mixture of toluene and methanol ; the quantity of alcohol added was just below the threshold of precipitation. The adsorbent used was a mixture of 75 per cent of lamp black (80 square meters per gram) and 25 per cent of coarse active carbon. The latter served to prevent agglomeration of the lamp black. The adsorbent was divided into three layers, of 10 grams each. At the end of the tube was a filter of fritted glass. Filtration was carried out under pressure, the rate of flow thereby being maintained constant, The polymers were characterized by their intrinsic viscosities. The molecular weights which were estimated by means of the relation, found experimentally between the molecular weight and viscosity, are only approximate, for this relation holds true only for narrow fractions.

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