Dual-protection of a graphene-sulfur composite by a compact graphene skin and an atomic layer deposited oxide coating for a lithium-sulfur battery

Nanoscale ◽  
2015 ◽  
Vol 7 (12) ◽  
pp. 5292-5298 ◽  
Author(s):  
Mingpeng Yu ◽  
Aiji Wang ◽  
Fuyang Tian ◽  
Hongquan Song ◽  
Yinshu Wang ◽  
...  
Keyword(s):  
Oxide Coating ◽  
Atomic Layer ◽  
Lithium Sulfur Battery ◽  
Dual Protection ◽  
Sulfur Battery ◽  
Lithium Sulfur

scholarly journals Long-life lithium-sulfur batteries with high areal capacity based on coaxial CNTs@TiN-TiO2 sponge

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Hui Zhang ◽  
Luis K. Ono ◽  
Guoqing Tong ◽  
Yuqiang Liu ◽  
Yabing Qi
Keyword(s):  
Rational Design ◽  
Specific Capacity ◽  
Three Dimensional ◽  
Atomic Layer ◽  
Catalyst System ◽  
Lithium Sulfur Battery ◽  
Layer Deposition ◽  
Sulfur Battery ◽  
Areal Capacity ◽  
Lithium Sulfur

AbstractRational design of heterostructures opens up new opportunities as an ideal catalyst system for lithium polysulfides conversion in lithium-sulfur battery. However, its traditional fabrication process is complex, which makes it difficult to reasonably control the content and distribution of each component. In this work, to rationally design the heterostructure, the atomic layer deposition is utilized to hybridize the TiO2-TiN heterostructure with the three-dimensional carbon nanotube sponge. Through optimizing the deposited thickness of TiO2 and TiN layers and adopting the annealing post-treatment, the derived coaxial sponge with uniform TiN-TiO2 heterostructure exhibits the best catalytic ability. The corresponding lithium-sulfur battery shows enhanced electrochemical performance with high specific capacity of 1289 mAh g−1 at 1 C and capacity retention of 85% after 500 cycles at 2 C. Furthermore, benefiting from the highly porous structure and interconnected conductive pathways from the sponge, its areal capacity reaches up to 21.5 mAh cm−2.

Enhanced Performance of Lithium Sulfur Battery with a Reduced Graphene Oxide Coating Separator

2015 ◽  
Vol 162 (8) ◽  
pp. A1624-A1629 ◽  
Author(s):  
Wei Lin ◽  
Yuanfu Chen ◽  
Pingjian Li ◽  
Jiarui He ◽  
Yan Zhao ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Oxide Coating ◽  
Lithium Sulfur Battery ◽  
Reduced Graphene ◽  
Sulfur Battery ◽  
Lithium Sulfur
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