Self-assembled CdS quantum dots in carbon nanotubes: induced polysulfide trapping and redox kinetics enhancement for improved lithium–sulfur battery performance

2019 ◽  
Vol 7 (2) ◽  
pp. 806-815 ◽  
Author(s):  
Dong Cai ◽  
Lili Wang ◽  
La Li ◽  
Yupu Zhang ◽  
Junzhi Li ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Quantum Dots ◽  
Rate Performance ◽  
Cds Quantum Dots ◽  
Redox Kinetics ◽  
Lithium Sulfur Batteries ◽  
Cds Qds ◽  
Self Assembled ◽  
Sulfur Battery ◽  
Lithium Sulfur

Self-assembled CdS-QDs in carbon nanotubes are highly efficient cathode materials for lithium–sulfur batteries with improved rate performance and cycle life. The configuration suppresses polysulfide shuttling and enhances redox kinetics.

Incorporation ZnS quantum dots into carbon nanotubes for high-performance lithium–sulfur batteries

2020 ◽  
Vol 31 (49) ◽  
pp. 495406
Author(s):  
Tianyu Shi ◽  
Chenyuan Zhao ◽  
Chuan Yin ◽  
Haihong Yin ◽  
Changqing Song ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Quantum Dots ◽  
High Performance ◽  
Lithium Sulfur Batteries ◽  
Lithium Sulfur

Metallic C5N Monolayers as Efficient Catalysts for Accelerating Redox Kinetics of Sulfur in Lithium-Sulfur Batteries

2021 ◽  
Author(s):  
Zhihao Wang ◽  
zhihao zeng ◽  
Wei Nong ◽  
Zhen Yang ◽  
Chenze Qi ◽  
...  
Keyword(s):  
Energy Storage ◽  
Energy Storage Devices ◽  
Shuttle Effect ◽  
Storage Devices ◽  
Redox Kinetics ◽  
Lithium Sulfur Batteries ◽  
Commercial Applications ◽  
Sulfur Battery ◽  
Kinetics Of ◽  
Lithium Sulfur

Lithium sulfur battery is one of the most promising applicants for the next generation of energy storage devices whose commercial applications are impeded by the key issue of shuttle effect....

Graphene oxide wrapped hierarchical porous carbon–sulfur composite cathode with enhanced cycling and rate performance for lithium sulfur batteries

RSC Advances ◽  
2015 ◽  
Vol 5 (8) ◽  
pp. 5516-5522 ◽  
Author(s):  
Shuangke Liu ◽  
Kai Xie ◽  
Yujie Li ◽  
Zhongxue Chen ◽  
Xiaobin Hong ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Porous Carbon ◽  
Composite Cathode ◽  
Rate Performance ◽  
Hierarchical Porous Carbon ◽  
Step Method ◽  
Hierarchical Porous ◽  
Lithium Sulfur Batteries ◽  
Sulfur Battery ◽  
Lithium Sulfur

A graphene oxide sheet wrapped hierarchical porous carbon–sulfur (HPC–S@GO) composite was designed by a two-step method to improve the lithium sulfur battery performance.

Efficient Energy Transfer Between CdS Quantum Dots in Layer-by-layer Self-assembled Films

2009 ◽  
Vol 1208 ◽  
Author(s):  
Kunio Shimura ◽  
DaeGwi Kim ◽  
Masaaki Nakayama
Keyword(s):  
Quantum Dots ◽  
Energy Transfer ◽  
Dipole Interaction ◽  
Layer By Layer ◽  
Cds Quantum Dots ◽  
Efficient Energy Transfer ◽  
Efficient Energy ◽  
Donor And Acceptor ◽  
Cds Qds ◽  
Self Assembled

AbstractWe have investigated efficient energy transfer (ET) between CdS quantum dots (QDs) measuring photoluminescence dynamics in layer-by-layer (LBL) self-assembled films. The assembly of negatively charged colloidal QDs and positively charged polyelectrolytes results in QD/polymer multilayers. Furthermore, to reveal how the ET rate depends on the distance between CdS QDs, we fabricated bilayer structures consisting of differently sized CdS QDs. It is experimentally verified that ET between the donor and acceptor QDs is conclusively dominated by the dipole-dipole interaction.

Enhanced electrochemiluminescence of CdS quantum dots capped with mercaptopropionic acid activated by EDC for Zika virus detection

The Analyst ◽  
2021 ◽  
Author(s):  
Hui-Jun Zhang ◽  
Jin Zhu ◽  
Ning Bao ◽  
Shou-Nian Ding
Keyword(s):  
Quantum Dots ◽  
Zika Virus ◽  
Virus Detection ◽  
Cds Quantum Dots ◽  
Mercaptopropionic Acid ◽  
Sandwich Type ◽  
Cds Qds

The mechanism of enhanced ECL of MPA@CdS QDs by EDC activation was investigated, and a sandwich-type ECL immunosensor has been designed for Zika virus detection.

Sulfur vacancies in Co9S8-x/N-doped graphene enhancing electrochemical kinetics to high-performance lithium sulfur batteries

2021 ◽  
Author(s):  
Haojie Li ◽  
Yihua Song ◽  
Kai Xi ◽  
Wei Wang ◽  
Sheng Liu ◽  
...  
Keyword(s):  
Cathode Materials ◽  
High Performance ◽  
Catalytic Conversion ◽  
High Energy ◽  
Electrochemical Kinetics ◽  
Lithium Sulfur Batteries ◽  
Doped Graphene ◽  
Sulfur Battery ◽  
Areal Capacity ◽  
Lithium Sulfur

A sufficient areal capacity is necessary for achieving high-energy lithium sulfur battery, which requires high enough sulfur loading in cathode materials. Therefore, kinetically fast catalytic conversion of polysulfide intermediates is...

scholarly journals Confine sulfur in double-hollow carbon sphere integrated with carbon nanotubes for advanced lithium–sulfur batteries

2021 ◽  
Vol 10 (1) ◽  
Author(s):  
Maru Dessie Walle ◽  
You-Nian Liu
Keyword(s):  
Carbon Nanotubes ◽  
Coulombic Efficiency ◽  
Specific Capacity ◽  
High Energy ◽  
High Energy Density ◽  
Carbon Sphere ◽  
Hollow Carbon Sphere ◽  
Lithium Sulfur Batteries ◽  
Hollow Carbon ◽  
Lithium Sulfur

AbstractThe lithium–sulfur (Li–S) batteries are promising because of the high energy density, low cost, and natural abundance of sulfur material. Li–S batteries have suffered from severe capacity fading and poor cyclability, resulting in low sulfur utilization. Herein, S-DHCS/CNTs are synthesized by integration of a double-hollow carbon sphere (DHCS) with carbon nanotubes (CNTs), and the addition of sulfur in DHCS by melt impregnations. The proposed S-DHCS/CNTs can effectively confine sulfur and physically suppress the diffusion of polysulfides within the double-hollow structures. CNTs act as a conductive agent. S-DHCS/CNTs maintain the volume variations and accommodate high sulfur content 73 wt%. The designed S-DHCS/CNTs electrode with high sulfur loading (3.3 mg cm−2) and high areal capacity (5.6 mAh mg cm−2) shows a high initial specific capacity of 1709 mAh g−1 and maintains a reversible capacity of 730 mAh g−1 after 48 cycles at 0.2 C with high coulombic efficiency (100%). This work offers a fascinating strategy to design carbon-based material for high-performance lithium–sulfur batteries.

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