Investigation of the structural effect of the carbon coated separator towards to the properties of Li-S batteries

2021 ◽  
Vol 290 ◽  
pp. 129512
Author(s):  
Xuejian Zhang ◽  
Linlin Chen ◽  
Zhen Yang ◽  
Xiangyun Qiu ◽  
Zongmin Zheng
Keyword(s):  
Structural Effect ◽  
Carbon Coated ◽  
Coated Separator

scholarly journals Enhanced polysulphide redox reaction using a RuO2 nanoparticle-decorated mesoporous carbon as functional separator coating for advanced lithium–sulphur batteries

2016 ◽  
Vol 52 (52) ◽  
pp. 8134-8137 ◽  
Author(s):  
J. Balach ◽  
T. Jaumann ◽  
S. Mühlenhoff ◽  
J. Eckert ◽  
L. Giebeler
Keyword(s):  
Redox Reaction ◽  
Mesoporous Carbon ◽  
Carbon Coated ◽  
Coated Separator

A multi-functional RuO2 nanoparticle-embedded mesoporous carbon-coated separator is used as an electrocatalytic and adsorbing polysulphide-net to enhance the redox reaction of migrating polysulphides.

Functional Mesoporous Carbon-Coated Separator for Long-Life, High-Energy Lithium-Sulfur Batteries

2015 ◽  
Vol 25 (33) ◽  
pp. 5285-5291 ◽  
Author(s):  
Juan Balach ◽  
Tony Jaumann ◽  
Markus Klose ◽  
Steffen Oswald ◽  
Jürgen Eckert ◽  
...  
Keyword(s):  
Mesoporous Carbon ◽  
High Energy ◽  
Lithium Sulfur Batteries ◽  
Carbon Coated ◽  
Long Life ◽  
Coated Separator ◽  
Lithium Sulfur

scholarly journals Effect of Varying the Ratio of Carbon Black to Vapor-Grown Carbon Fibers in the Separator on the Performance of Li–S Batteries

Nanomaterials ◽  
2019 ◽  
Vol 9 (3) ◽  
pp. 436 ◽  
Author(s):  
Hearin Jo ◽  
Jeonghun Oh ◽  
Yong Lee ◽  
Myung-Hyun Ryou
Keyword(s):  
Carbon Black ◽  
Electrochemical Performance ◽  
Carbon Fibers ◽  
Coulombic Efficiency ◽  
Active Material ◽  
High Energy ◽  
High Energy Density ◽  
Lithium Polysulfide ◽  
Carbon Coated ◽  
Coated Separator

Lithium–sulfur (Li–S) batteries are expected to be very useful for next-generation transportation and grid storage because of their high energy density and low cost. However, their low active material utilization and poor cycle life limit their practical application. The use of a carbon-coated separator in these batteries serves to inhibit the migration of the lithium polysulfide intermediate and increases the recyclability. We report the extent to which the electrochemical performance of Li–S battery systems depends on the characteristics of the carbon coating of the separator. Carbon-coated separators containing different ratios of carbon black (Super-P) and vapor-grown carbon fibers (VGCFs) were prepared and evaluated in Li–S batteries. The results showed that larger amounts of Super-P on the carbon-coated separator enhanced the electrochemical performance of Li–S batteries; for instance, the pure Super-P coating exhibited the highest discharge capacity (602.1 mAh g−1 at 150 cycles) with a Coulombic efficiency exceeding 95%. Furthermore, the separators with the pure Super-P coating had a smaller pore structure, and hence, limited polysulfide migration, compared to separators containing Super-P/VGCF mixtures. These results indicate that it is necessary to control the porosity of the porous membrane to control the movement of the lithium polysulfide.

Enhanced Li–S battery performance based on solution-impregnation-assisted sulfur/mesoporous carbon cathodes and a carbon-coated separator

2017 ◽  
Vol 5 (12) ◽  
pp. 5750-5760 ◽  
Author(s):  
Changil Oh ◽  
Naeun Yoon ◽  
Jaeho Choi ◽  
Yeseul Choi ◽  
Seonghyeon Ahn ◽  
...  
Keyword(s):  
Mesoporous Carbon ◽  
Loading Method ◽  
Carbon Coated ◽  
New Type ◽  
Coated Separator

A new sulfur-loading method for S/mesoporous carbon cathodes coupled with a new type of carbon-coated separator is successfully demonstrated to enhance Li–S battery performances.

scholarly journals Effect of Varying the Ratio of Carbon Black to Vapor-Grown-Carbon-Fibers in the Separator on the Performance of Li–S Batteries

2019 ◽  
Author(s):  
Hearin Jo ◽  
Jeonghun Oh ◽  
Yong Min Lee ◽  
Myung-Hyun Ryou
Keyword(s):  
Carbon Black ◽  
Electrochemical Performance ◽  
Carbon Fibers ◽  
Coulombic Efficiency ◽  
Active Material ◽  
High Energy ◽  
High Energy Density ◽  
Lithium Polysulfide ◽  
Carbon Coated ◽  
Coated Separator

Lithium sulfur (Li–S) batteries are expected to be very useful for next-generation transportation and grid storage because of their high energy density and low cost. However, their low active material utilization and poor cycle life limit their practical application. The use of a carbon-coated separator in these batteries serves to inhibit the migration of the lithium polysulfide intermediate and increases the recyclability. We report the extent to which the electrochemical performance of Li–S battery systems depends on the characteristics of the carbon coating of the separator. Carbon-coated separators containing different ratios of carbon black (Super-P) and vapor-grown-carbon-fibers (VGCF) were prepared and evaluated in Li–S batteries. The results showed that larger amounts of Super-P on the carbon-coated separator enhanced the electrochemical performance of Li–S batteries; for instance, the pure Super-P coating exhibited the highest discharge capacity (602.1 mAh g-1 at 150 cycles) with a Coulombic efficiency exceeding 95%. Furthermore, the separators with the pure Super-P coating had a smaller pore structure, and hence limited polysulfide migration, compared to separators containing Super-P/VGCF mixtures. These results indicate that it is necessary to control the porosity of the porous membrane to control the movement of the lithium polysulfide.

High performance lithium–sulfur batteries with a permselective sulfonated acetylene black modified separator

2016 ◽  
Vol 4 (31) ◽  
pp. 12319-12327 ◽  
Author(s):  
Fanglei Zeng ◽  
Zhaoqing Jin ◽  
Keguo Yuan ◽  
Shuai Liu ◽  
Xing Cheng ◽  
...  
Keyword(s):  
High Performance ◽  
Acetylene Black ◽  
Lithium Ions ◽  
Lithium Sulfur Batteries ◽  
Carbon Coated ◽  
Overall Performance ◽  
Coated Separator ◽  
Lithium Sulfur ◽  
Modified Separator

In this paper, a sulfonated carbon coated separator is proposed with high permselectivity to lithium ions against polysulfide anions for improving the overall performance of Li–S batteries.

Biophysical Measurement of Molecular Weight of Foot-and-Mouth Disease RNA Fragments

1974 ◽  
Vol 32 ◽  
pp. 262-263
Author(s):  
Sydney S. Breese ◽  
Howard L. Bachrach
Keyword(s):  
Chemical Properties ◽  
Foot And Mouth Disease ◽  
Mouth Disease ◽  
Distilled Water ◽  
Bovine Plasma ◽  
Mouth Disease Virus ◽  
Foot And Mouth ◽  
Carbon Coated ◽  
Rna Fragments ◽  
Physical And Chemical

Continuing studies on the physical and chemical properties of foot-and-mouth disease virus (FMDV) have included electron microscopy of RNA strands released when highly purified virus (1) was dialyzed against demlneralized distilled water. The RNA strands were dried on formvar-carbon coated electron microscope screens pretreated with 0.1% bovine plasma albumin in distilled water. At this low salt concentration the RNA strands were extended and were stained with 1% phosphotungstic acid. Random dispersions of strands were recorded on electron micrographs, enlarged to 30,000 or 40,000 X and the lengths measured with a map-measuring wheel. Figure 1 is a typical micrograph and Fig. 2 shows the distributions of strand lengths for the three major types of FMDV (A119 of 6/9/72; C3-Rezende of 1/5/73; and O1-Brugge of 8/24/73.

The Application of Ultracryotomy to Immunocytochemistry

1973 ◽  
Vol 31 ◽  
pp. 704-709
Author(s):  
R. G. Painter ◽  
K. T. Tokuyasu ◽  
S. J. Singer
Keyword(s):  
Frozen Sections ◽  
Protein Antigens ◽  
Carbon Coated ◽  
Antibody Conjugates ◽  
Ultrathin Frozen Sections

A technique for localizing intracellular antigens with immunoferritin conjugates directly on ultrathin frozen sections of glutaraldehyde-fixed tissues has been developed. This method overcomes some of the limitations of previously described procedures, since it avoids drastic fixation, dehydration and embedding procedures which could denature many protein antigens.Briefly cells or tissues were fixed with glutaraldehyde (0.5 to 2% for 1 hr), and ultrathin frozen sections were cut and mounted on grids covered with carbon-coated Formvar film by the procedure described previously. Such sections were stained with ferritin-antibody conjugates by methods described elsewhere.

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