Dual Core–Shell-Structured S@C@MnO2 Nanocomposite for Highly Stable Lithium–Sulfur Batteries

2017 ◽  
Vol 9 (40) ◽  
pp. 34793-34803 ◽  
Author(s):  
Lubin Ni ◽  
Gangjin Zhao ◽  
Guang Yang ◽  
Guosheng Niu ◽  
Ming Chen ◽  
...  
Keyword(s):  
Core Shell ◽  
Lithium Sulfur Batteries ◽  
Dual Core ◽  
Lithium Sulfur

scholarly journals MnO2-Coated Dual Core–Shell Spindle-Like Nanorods for Improved Capacity Retention of Lithium–Sulfur Batteries

2020 ◽  
Vol 4 (2) ◽  
pp. 42 ◽  
Author(s):  
Hamza Dunya ◽  
Maziar Ashuri ◽  
Dana Alramahi ◽  
Zheng Yue ◽  
Kamil Kucuk ◽  
...  
Keyword(s):  
High Performance ◽  
Synergistic Effects ◽  
Coulombic Efficiency ◽  
Rate Capability ◽  
Core Shell ◽  
Shuttle Effect ◽  
Lithium Sulfur Batteries ◽  
Hollow Carbon ◽  
Dual Core ◽  
Lithium Sulfur

The emerging need for high-performance lithium–sulfur batteries has motivated many researchers to investigate different designs. However, the polysulfide shuttle effect, which is the result of dissolution of many intermediate polysulfides in electrolyte, has still remained unsolved. In this study, we have designed a sulfur-filled dual core–shell spindle-like nanorod structure coated with manganese oxide (S@HCNR@MnO2) to achieve a high-performance cathode for lithium–sulfur batteries. The cathode showed an initial discharge capacity of 1661 mA h g−1 with 80% retention of capacity over 70 cycles at a 0.2C rate. Furthermore, compared with the nanorods without any coating (S@HCNR), the MnO2-coated material displayed superior rate capability, cycling stability, and Coulombic efficiency. The synergistic effects of the nitrogen-doped hollow carbon host and the MnO2 second shell are responsible for the improved electrochemical performance of this nanostructure.

Dual core–shell structured sulfur cathode composite synthesized by a one-pot route for lithium sulfur batteries

2013 ◽  
Vol 1 (5) ◽  
pp. 1716-1723 ◽  
Author(s):  
Chao Wang ◽  
Wang Wan ◽  
Ji-Tao Chen ◽  
Heng-Hui Zhou ◽  
Xin-Xiang Zhang ◽  
...  
Keyword(s):  
Core Shell ◽  
Sulfur Cathode ◽  
One Pot ◽  
Lithium Sulfur Batteries ◽  
Dual Core ◽  
Lithium Sulfur

Core-shell structured S@CuO/δ-MnO2 composites as cathodes for lithium-sulfur batteries

CrystEngComm ◽  
2021 ◽  
Author(s):  
Guiying Xu ◽  
Yongying Li ◽  
Hui Cheng ◽  
Guan Liu ◽  
Ziyang Yang ◽  
...  
Keyword(s):  
Coulombic Efficiency ◽  
Cycle Life ◽  
Core Shell ◽  
Practical Application ◽  
Short Cycle ◽  
Lithium Sulfur Batteries ◽  
Lithium Sulfur ◽  
Capacity Decay

The dissolution of polysulfides (LiPSs) always leads to low Coulombic efficiency, dramatic capacity decay, and short cycle life, which hinders the practical application of lithium-sulfur (Li-S) batteries. In this study,...

Fast electrochemical kinetics and strong polysulfide adsorption by a highly oriented MoS2 nanosheet@N-doped carbon interlayer for lithium–sulfur batteries

2019 ◽  
Vol 7 (13) ◽  
pp. 7897-7906 ◽  
Author(s):  
Jingyi Wu ◽  
Xiongwei Li ◽  
Hongxia Zeng ◽  
Yang Xue ◽  
Fangyan Chen ◽  
...  
Keyword(s):  
Electrochemical Kinetics ◽  
Core Shell ◽  
Lithium Sulfur Batteries ◽  
Shell Design ◽  
Mos2 Nanosheet ◽  
Lithium Sulfur

Integrating polysulfide catalyst MoS2 nanosheets and conductive N-doped carbon in a core–shell design as an interlayer for lithium–sulfur batteries.

Facile dry synthesis of sulfur-LiFePO4 core–shell composite for the scalable fabrication of lithium/sulfur batteries

2013 ◽  
Vol 32 ◽  
pp. 35-38 ◽  
Author(s):  
C.-S. Kim ◽  
A. Guerfi ◽  
P. Hovington ◽  
J. Trottier ◽  
C. Gagnon ◽  
...  
Keyword(s):  
Core Shell ◽  
Lithium Sulfur Batteries ◽  
Shell Composite ◽  
Lithium Sulfur

Core-Shell Structure and Interaction Mechanism of γ-MnO2Coated Sulfur for Improved Lithium-Sulfur Batteries

Small ◽  
2017 ◽  
Vol 13 (14) ◽  
pp. 1603466 ◽  
Author(s):  
Lubin Ni ◽  
Zhen Wu ◽  
Gangjin Zhao ◽  
Chunyu Sun ◽  
Chuanqiang Zhou ◽  
...  
Keyword(s):  
Shell Structure ◽  
Interaction Mechanism ◽  
Core Shell ◽  
Lithium Sulfur Batteries ◽  
Core Shell Structure ◽  
Lithium Sulfur
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