Multi-shelled hollow carbon nanospheres for lithium–sulfur batteries with superior performances

2014 ◽  
Vol 2 (38) ◽  
pp. 16199-16207 ◽  
Author(s):  
Shuangqiang Chen ◽  
Xiaodan Huang ◽  
Bing Sun ◽  
Jinqiang Zhang ◽  
Hao Liu ◽  
...  
Keyword(s):  
Specific Capacity ◽  
High Specific Surface Area ◽  
High Rate ◽  
Carbon Nanospheres ◽  
Aqueous Emulsion ◽  
High Specific Capacity ◽  
Lithium Sulfur Batteries ◽  
Hollow Carbon ◽  
High Rate Performance ◽  
Lithium Sulfur

Multi-shelled hollow carbon nanospheres with a high specific surface area of 1050 m2g−1were prepared by an aqueous emulsion approach, which achieved a high percentage of sulfur loading (86 wt%). When applied as cathodes in lithium–sulfur batteries, the composites delivered a high specific capacity of 1350 mA h g−1at a current rate of 0.1 C, significantly enhanced cyclability and high rate performance.

Porous hollow carbon nanospheres embedded with well-dispersed cobalt monoxide nanocrystals as effective polysulfide reservoirs for high-rate and long-cycle lithium–sulfur batteries

2017 ◽  
Vol 5 (33) ◽  
pp. 17352-17359 ◽  
Author(s):  
Shikui Wu ◽  
Yingze Wang ◽  
Shengsang Na ◽  
Chaojun Chen ◽  
Tengfei Yu ◽  
...  
Keyword(s):  
Energy Storage ◽  
Energy Density ◽  
Storage Systems ◽  
High Rate ◽  
Energy Storage Systems ◽  
Carbon Nanospheres ◽  
Lithium Sulfur Batteries ◽  
Low Costs ◽  
Hollow Carbon ◽  
Lithium Sulfur

Lithium–sulfur (Li–S) batteries are promising energy storage systems owing to their high theoretical energy density and low costs due to the abundant reserves of sulfur.

Gas Pickering Emulsion Templated Hollow Carbon for High Rate Performance Lithium Sulfur Batteries

2016 ◽  
Vol 26 (46) ◽  
pp. 8408-8417 ◽  
Author(s):  
Matthew Li ◽  
Yining Zhang ◽  
Xiaolei Wang ◽  
Wook Ahn ◽  
Gaopeng Jiang ◽  
...  
Keyword(s):  
Pickering Emulsion ◽  
High Rate ◽  
Rate Performance ◽  
Lithium Sulfur Batteries ◽  
Hollow Carbon ◽  
High Rate Performance ◽  
Lithium Sulfur

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.

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...

Hollow C@TiO2 array nanospheres as efficient sulfur hosts for lithium–sulfur batteries

2020 ◽  
Vol 4 (11) ◽  
pp. 5493-5497
Author(s):  
Sheng-You Qiu ◽  
Chuang Wang ◽  
Li-Su Zhang ◽  
Liang-Liang Gu ◽  
Zai-Xing Jiang ◽  
...  
Keyword(s):  
Carbon Nanospheres ◽  
Lithium Sulfur Batteries ◽  
Hollow Carbon ◽  
Sulfur Hosts ◽  
Lithium Sulfur

The organized TiO2 nanosheets nanoarray grown on the hollow carbon nanospheres fundamentally restricts polysulfides dissolution by polar–polar chemisorption capability of trap polysulfides.

Rational Design of Cathode Structure for High Rate Performance Lithium–Sulfur Batteries

Nano Letters ◽  
2015 ◽  
Vol 15 (8) ◽  
pp. 5443-5448 ◽  
Author(s):  
Hongwei Chen ◽  
Changhong Wang ◽  
Yafei Dai ◽  
Shengqiang Qiu ◽  
Jinlong Yang ◽  
...  
Keyword(s):  
Rational Design ◽  
High Rate ◽  
Rate Performance ◽  
Lithium Sulfur Batteries ◽  
Cathode Structure ◽  
High Rate Performance ◽  
Lithium Sulfur

Preparation of a graphitic N-doped multi-walled carbon nanotube composite for lithium–sulfur batteries with long-life and high specific capacity

RSC Advances ◽  
2016 ◽  
Vol 6 (80) ◽  
pp. 76568-76574 ◽  
Author(s):  
Chunli Wang ◽  
Feifei Zhang ◽  
Xuxu Wang ◽  
Gang Huang ◽  
Dongxia Yuan ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Specific Capacity ◽  
Capacity Fading ◽  
High Specific Capacity ◽  
Multi Walled Carbon Nanotube ◽  
Lithium Sulfur Batteries ◽  
Long Life ◽  
Carbon Nanotube Composite ◽  
Lithium Sulfur

One of the challenges for lithium–sulfur batteries is a rapid capacity fading owing to the insulating of sulfur and Li2S2/Li2S compounds, the dissolving and consequent shuttling of polysulfide.

scholarly journals Encapsulating Sulfur Into Nickel Decorated Hollow Carbon Fibers for High-Performance Lithium-Sulfur Batteries

2021 ◽  
Vol 8 ◽  
Author(s):  
Dongdong Yu ◽  
Zhihong Tang ◽  
Haiyong He
Keyword(s):  
Carbon Fibers ◽  
Current Density ◽  
Specific Capacity ◽  
Energy Storage Devices ◽  
Transport Channel ◽  
Nickel Particles ◽  
Study Results ◽  
Lithium Sulfur Batteries ◽  
Hollow Carbon ◽  
Lithium Sulfur

Due to the high specific energy density, lithium-sulfur batteries (LSBs) have great potential in energy storage devices for electric vehicle and electronic equipment. However, poor conductivity of sulfur, large volume expansion, and lithium polysulfide dissolution limit LSBs application and promotion. In this work, graphitic hollow carbon fibers (HCF) were fabricated as a matrix to encapsulate sulfur. And nickel particles were introduced into fibers (Ni@HCF) to improve the cycle stability of sulfur cathode. On one hand, hollow structures can encapsulate sulfur and limit lithium polysulfides dissolution, and the graphitic carbon walls can provide a fast electron transport channel. On the other hand, nickel particles can accelerate the conversion of lithium polysulfides. The study results show that the initial discharge specific capacity of Ni@HCF/S cathodes reaches 1,252 mAh g−1 at the current density of 0.1C. And the capacity can be maintained at 558 mAh g−1 after 200 cycles at the current density of 1C.

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