Ultra-High Sulfur-Doped Hierarchical Porous Hollow Carbon Sphere Anodes Enabling Unprecedented Durable Potassium-Ion Hybrid Capacitors

2021 ◽  
Author(s):  
Chuang Qiu ◽  
Min Li ◽  
Daping Qiu ◽  
Cheng Yue ◽  
Liying Xian ◽  
...  
Keyword(s):  
Potassium Ion ◽  
Carbon Sphere ◽  
Hollow Carbon Sphere ◽  
Hierarchical Porous ◽  
Hollow Carbon ◽  
Hybrid Capacitors

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.

scholarly journals Hollow Carbon Sphere

Kobunshi ◽  
1973 ◽  
Vol 22 (2) ◽  
pp. 87-91
Author(s):  
Kazuo KOBAYASHI
Keyword(s):  
Carbon Sphere ◽  
Hollow Carbon Sphere ◽  
Hollow Carbon

Effect of iron oxide impregnated in hollow carbon sphere as symmetric supercapacitors

2017 ◽  
Vol 726 ◽  
pp. 466-473 ◽  
Author(s):  
Xiaoze Shi ◽  
Shuai Zhang ◽  
Xuecheng Chen ◽  
Tao Tang ◽  
Ewa Mijowska
Keyword(s):  
Iron Oxide ◽  
Carbon Sphere ◽  
Hollow Carbon Sphere ◽  
Hollow Carbon
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