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

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

Chemical Communications ◽

10.1039/c6cc03743g ◽

2016 ◽

Vol 52 (52) ◽

pp. 8134-8137 ◽

Cited By ~ 55

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.

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

Advanced Functional Materials ◽

10.1002/adfm.201502251 ◽

2015 ◽

Vol 25 (33) ◽

pp. 5285-5291 ◽

Cited By ~ 250

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

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Carbon-coated Na3V2(PO4)2F3 nanoparticles embedded in a mesoporous carbon matrix as a potential cathode material for sodium-ion batteries with superior rate capability and long-term cycle life

Journal of Materials Chemistry A ◽

10.1039/c5ta05939a ◽

2015 ◽

Vol 3 (43) ◽

pp. 21478-21485 ◽

Cited By ~ 96

Author(s):

Qiang Liu ◽

Dongxue Wang ◽

Xu Yang ◽

Nan Chen ◽

Chunzhong Wang ◽

...

Keyword(s):

Cathode Material ◽

Mesoporous Carbon ◽

Rate Capability ◽

Carbon Matrix ◽

Cycle Life ◽

Sodium Ion ◽

Sodium Ion Batteries ◽

Hrtem Image ◽

Carbon Coated

The HRTEM image and long-term cycle life with capacity retentions of 70% and 50% over 1000 and 3000 cycles at 10C and 30C rates, respectively.

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Iron Nanoparticles Coated with Nanostructured Carbon: Synthesis and Application in Glucose Biosensors

Materials Science Forum ◽

10.4028/www.scientific.net/msf.899.216 ◽

2017 ◽

Vol 899 ◽

pp. 216-220

Author(s):

R.L. Roman ◽

J.P.Z. Gonçalves ◽

S.C. Fernandes ◽

Lucinao Luiz Silva ◽

J. Dal Magro ◽

...

Keyword(s):

Glucose Biosensor ◽

Performance Evaluations ◽

Carbon Paste ◽

Hydrothermal Route ◽

Sensor Performance ◽

Carbon Coated ◽

New Type ◽

Co Precipitation ◽

Paste Electrode ◽

Oxidation Of Glucose

Nanowires of carbon coated ferric oxide (Fe2O3/C) have been studied to be applied at an electrochemical glucose biosensor as a new type of carbon paste electrode (CPE) modifier. The Fe2O3/C was synthesized by adapting co-precipitation hydrothermal route. Firstly, amperometric sensor based on a modified CPE doped with Fe2O3 has been developed and compared with CPE doped with Fe2O3/C for hydrogen peroxide (H2O2) determination. The performance evaluations for the modified materials and sensors were studied in detail through cyclic voltammetry (CV) method. After, the electrochemical sensor performance was also evaluated for glucose oxidase (GOx) response biosensor due to considerable interest in the blood sugar control. The results demonstrate that the GOx retains its biocatalytic activity toward the oxidation of glucose and that the bioelectrode modified by the Fe2O3/C matrix has potential for use in biosensors and other bioelectronics devices.

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Mesoporous Carbon‐Coated Bismuth Nanorods as Anode for Potassium‐Ion Batteries

physica status solidi (RRL) - Rapid Research Letters ◽

10.1002/pssr.201900209 ◽

2019 ◽

Vol 13 (10) ◽

pp. 1900209 ◽

Cited By ~ 20

Author(s):

Shihan Qi ◽

Xuan Xie ◽

Xinwen Peng ◽

Dickon H. L. Ng ◽

Mingguang Wu ◽

...

Keyword(s):

Mesoporous Carbon ◽

Potassium Ion ◽

Carbon Coated

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Functional mesoporous carbon-coated CNT network for high-performance supercapacitors

New Journal of Chemistry ◽

10.1039/c3nj00159h ◽

2013 ◽

Vol 37 (5) ◽

pp. 1294 ◽

Cited By ~ 10

Author(s):

Tao Tao ◽

Ling Zhang ◽

Hao Jiang ◽

Chunzhong Li

Keyword(s):

Mesoporous Carbon ◽

High Performance ◽

Carbon Coated

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

Nanomaterials ◽

10.3390/nano9030436 ◽

2019 ◽

Vol 9 (3) ◽

pp. 436 ◽

Cited By ~ 5

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.

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Beyond Backslip: Improvement of Earthquake Simulators from New Hybrid Loading Conditions

Bulletin of the Seismological Society of America ◽

10.1785/0120180128 ◽

2019 ◽

Vol 109 (6) ◽

pp. 2159-2167 ◽

Cited By ~ 1

Author(s):

Bruce E. Shaw

Keyword(s):

Fault System ◽

Slip Rates ◽

Depth Dependence ◽

Loading Method ◽

Fault Slip Rates ◽

Complex Fault ◽

New Type ◽

Ability To Drive ◽

Natural Way ◽

Stressing Rate

Abstract A standard approach to loading earthquake simulators involving complex fault system geometries is the backslip method, by which fault‐slip rates are specified and stressing rates giving the specified slip rates are calculated and imposed on the system. This often results in singularities in stressing rate at fault boundaries, and unrealistic hypocenters of events associated with these singularities. We present a new generalized hybrid loading method that combines the ability to drive faults at desired slip rates while loading with more regularized stressing rates, allowing faults to slip in a more natural way. The resulting behavior shows improvement in the depth dependence of seismicity, the distribution of sizes of events, and the depth dependence of slip. We discuss as well the physical implications of the new type of loading.

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