In Situ Polymerization Synthesis of Ternary Sulfur/Polypyrrole/Graphene Nanosheet Cathode for Lithium/Sulfur Batteries

2016 ◽  
Vol 847 ◽  
pp. 8-13 ◽  
Author(s):  
Xin Yi Liu ◽  
Yue Li ◽  
Yan Zhao ◽  
Hai Peng Li ◽  
Fu Xing Yin ◽  
...  

A novel sulfur/polypyrrole/graphene nanosheet composite (S/PPy/GNS) was synthesized and investigated as a promising cathode material. This ternary composite was prepared via in situ polymerization of pyrrole monomer with nanosulfur and GNS aqueous suspension followed by heat-treatment. Scanning electronic microscopy observation revealed the formation of a highly porous structure consisting sulfur and polypyrrole coating on the GNS surface. In this composite, GNS works as nanocurrent collector and enhances the conductivity of the composite, and polypyrrole with its high adhesion ability to GNS could act as a binder to connect sulfur and GNS. The resulting S/PPy/GNS composite cathode exhibits high and stable specific discharge capacities of 991 mAh g-1 after 50 cycles at 0.1 C and good rate capability.

2020 ◽  
Vol 8 (14) ◽  
pp. 6902-6907 ◽  
Author(s):  
Y. X. Ren ◽  
H. R. Jiang ◽  
C. Xiong ◽  
C. Zhao ◽  
T. S. Zhao

An in situ encapsulation strategy is adopted for protecting sulfur/carbon composite cathodes, extending the cycle life with a minor sacrifice in the rate capability.


2014 ◽  
Vol 2 (14) ◽  
pp. 5018-5023 ◽  
Author(s):  
Chao Wang ◽  
Kai Su ◽  
Wang Wan ◽  
Hua Guo ◽  
Henghui Zhou ◽  
...  

A sulfur composite cathode material based on 3D N-doped graphene has a high sulfur content of 87.6 wt% and shows an excellent rate capability and cyclability.


Author(s):  
Maryam Nojabaee ◽  
Brigitta Sievert ◽  
Marina Schwan ◽  
Jessica Schettler ◽  
Frieder Warth ◽  
...  

In the presented study, a sulfur infiltrated ultra-microporous carbon aerogel as a composite cathode for lithium sulfur batteries is developed and investigated.


Author(s):  
Chenbo Zhu ◽  
Chenghao Fan ◽  
Emiliano Cortes ◽  
Wei Xie

We report on the mechanism of rhodamine B (RhB) acting as an electrolyte additive in Li/graphite cells. We show that cycle performance and rate capability of graphite is enhanced in...


2009 ◽  
Vol 100 (8) ◽  
pp. 1397-1402 ◽  
Author(s):  
Takafumi Nishii ◽  
Masakazu Yashiro ◽  
Osamu Shinto ◽  
Tetsuji Sawada ◽  
Masaichi Ohira ◽  
...  

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