scholarly journals Li2S encapsulated by nitrogen-doped carbon for lithium sulfur batteries

2014 ◽  
Vol 2 (42) ◽  
pp. 18026-18032 ◽  
Author(s):  
Lin Chen ◽  
Yuzi Liu ◽  
Maziar Ashuri ◽  
Caihong Liu ◽  
Leon L. Shaw
Keyword(s):  
Specific Capacity ◽  
Carbon Shell ◽  
Composite Particles ◽  
Nitrogen Doped ◽  
Discharge Specific Capacity ◽  
Initial Discharge ◽  
Lithium Sulfur Batteries ◽  
Nitrogen Doped Carbon ◽  
Lithium Sulfur

The procedure for the synthesis of Li2S/C composite particles encapsulated by a nitrogen-doped carbon shell, which exhibit the highest initial discharge specific capacity ever reported in the literature.

scholarly journals Lotus Root-Like Nitrogen-Doped Carbon Nanofiber Structure Assembled with VN Catalysts as a Multifunctional Host for Superior Lithium–Sulfur Batteries

Nanomaterials ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 1724 ◽  
Author(s):  
Benben Wei ◽  
Chaoqun Shang ◽  
Xiaoying Pan ◽  
Zhihong Chen ◽  
Lingling Shui ◽  
...  
Keyword(s):  
Carbon Nanofiber ◽  
Specific Capacity ◽  
High Energy ◽  
High Energy Density ◽  
Vanadium Nitride ◽  
Nitrogen Doped ◽  
Lotus Root ◽  
Lithium Sulfur Batteries ◽  
Nitrogen Doped Carbon ◽  
Lithium Sulfur

Lithium–sulfur batteries (LSBs) are regarded as one of the most promising energy-recycling storage systems due to their high energy density (up to 2600 Wh kg−1), high theoretical specific capacity (as much as 1672 mAh g−1), environmental friendliness, and low cost. Originating from the complicated redox of lithium polysulfide intermediates, Li–S batteries suffer from several problems, restricting their application and commercialization. Such problems include the shuttle effect of polysulfides (Li2Sx (2 < x ≤ 8)), low electronic conductivity of S/Li2S/Li2S2, and large volumetric expansion of S upon lithiation. In this study, a lotus root-like nitrogen-doped carbon nanofiber (NCNF) structure, assembled with vanadium nitride (VN) catalysts, was fabricated as a 3D freestanding current collector for high performance LSBs. The lotus root-like NCNF structure, which had a multichannel porous nanostructure, was able to provide excellent (ionically/electronically) conductive networks, which promoted ion transport and physical confinement of lithium polysulfides. Further, the structure provided good electrolyte penetration, thereby enhancing the interface contact with active S. VN, with its narrow resolved band gap, showed high electrical conductivity, high catalytic effect and polar chemical adsorption of lithium polysulfides, which is ideal for accelerating the reversible redox kinetics of intermediate polysulfides to improve the utilization of S. Tests showed that the VN-decorated multichannel porous carbon nanofiber structure retained a high specific capacity of 1325 mAh g−1 after 100 cycles at 0.1 C, with a low capacity decay of 0.05% per cycle, and demonstrated excellent rate capability.

Nitrogen-Doped Multi-Channel Carbon Nanofibers Incorporated with Nickel Nanoparticles as Multifunctional Modification of Separator for Ultra Stable Li-S Batteries

2021 ◽  
Author(s):  
Zhikang Wang ◽  
Guiqiang Cao ◽  
Da Bi ◽  
Tian-Xiong Tan ◽  
Qingxue Lai ◽  
...  
Keyword(s):  
Nickel Nanoparticles ◽  
Specific Capacity ◽  
High Energy ◽  
High Energy Density ◽  
Storage Device ◽  
Energy Storage Device ◽  
High Specific Capacity ◽  
Nitrogen Doped ◽  
Lithium Sulfur Batteries ◽  
Lithium Sulfur

Lithium-Sulfur batteries have been regarded as the most promising electrochemical energy storage device in consideration of their satisfactory high specific capacity and high energy density. However, the inferior conversion efficiency...

Intertwined Nitrogen‐Doped Carbon Nanotube Microsphere as Polysulfide Grappler for High‐Performance Lithium‐Sulfur Batteries

2019 ◽  
Vol 6 (5) ◽  
pp. 1466-1474 ◽  
Author(s):  
Kaixiong Xiang ◽  
Manfang Chen ◽  
Jun Hu ◽  
Sicheng Wang ◽  
Xiaoyu Wen ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
High Performance ◽  
Nitrogen Doped ◽  
Lithium Sulfur Batteries ◽  
Nitrogen Doped Carbon ◽  
Lithium Sulfur

Honeycomb-Like Nitrogen-Doped Carbon 3D Nanoweb@Li2 S Cathode Material for Use in Lithium Sulfur Batteries

ChemSusChem ◽  
2019 ◽  
Vol 12 (4) ◽  
pp. 824-829 ◽  
Author(s):  
Yoongon Kim ◽  
Hyunsu Han ◽  
Yuseong Noh ◽  
Jaejin Bae ◽  
Moon-Ho Ham ◽  
...  
Keyword(s):  
Cathode Material ◽  
Nitrogen Doped ◽  
Lithium Sulfur Batteries ◽  
Nitrogen Doped Carbon ◽  
Lithium Sulfur
Sign in / Sign up

Export Citation Format

Share Document