Ultrastable lithium–sulfur batteries with outstanding rate capability boosted by NiAs-type vanadium sulfides

2020 ◽  
Vol 8 (35) ◽  
pp. 18358-18366
Author(s):  
Chao Yue Zhang ◽  
Guo Wen Sun ◽  
Yun Fei Bai ◽  
Zhe Dai ◽  
Yi Rong Zhao ◽  
...  
Keyword(s):  
High Performance ◽  
Rate Capability ◽  
Lithium Sulfur Batteries ◽  
Vanadium Sulfide ◽  
New Type ◽  
Nias Type ◽  
Lithium Sulfur

A new type of vanadium sulfide (V2S3) was used for high-performance lithium–sulfur batteries.

Vanadium Sulfide@Sulfur Composites as High‐Performance Cathode for Advanced Lithium–Sulfur Batteries

2019 ◽  
Vol 8 (3) ◽  
pp. 1901163 ◽  
Author(s):  
Xiaojuan Chen ◽  
Gaohui Du ◽  
Miao Zhang ◽  
Abul Kalam ◽  
Shukai Ding ◽  
...  
Keyword(s):  
High Performance ◽  
Sulfide Sulfur ◽  
Lithium Sulfur Batteries ◽  
Vanadium Sulfide ◽  
Lithium Sulfur

Cellulose-Derived Carbon Microfiber Mesh for Binder-Free Lithium—Sulfur Batteries

2020 ◽  
Vol 20 (9) ◽  
pp. 5629-5635
Author(s):  
Shiqi Li ◽  
Zhiqun Cheng ◽  
Tian Xie ◽  
Zhihua Dong ◽  
Guohua Liu
Keyword(s):  
High Performance ◽  
Carbon Materials ◽  
Electronic Conductivity ◽  
Specific Capacity ◽  
Rate Capability ◽  
Lithium Sulfide ◽  
Lithium Sulfur Batteries ◽  
Binder Free ◽  
Carbon Microfiber ◽  
Lithium Sulfur

The practical application of lithium–sulfur batteries (LSBs) has been impeded by several chronic problems related to the insulating nature of sulfur and lithium sulfide, in addition to the dissolution and diffusion of lithium polysulfides. In view of these problems, a large variety of carbonaceous materials have been employed to enhance the electronic conductivity of the cathode and/or sequester lithium polysulfides within conductive matrixes. Although they may exhibit impressive electrochemical performance, the fabrication of most carbon materials involves costly precursors and complicated procedures. Waste paper—the main constituent of municipal waste—is composed of carbohydrates, and can be an ideal precursor for carbon materials. Herein, carbon microfiber meshes (CMFMs) obtained by the pyrolysis of common filter paper in argon (A-CMFM) or ammonia (N-CMFM) were used to form sulfur cathodes. Compared with LSBs based on A-CMFM, those based on N-CMFM demonstrated higher specific capacity and better rate capability, with a capacity of 650 mA h g−1 at 0.2 C and 550 mA h g−1 at 0.5 C. This was owing to the strong immobilization of lithium polysulfides resulting from the heteroatom doping and hydrophilicity of N-CMFM. The results indicate that cellulose paper-derived carbon is a promising candidate for application in high-performance LSBs.

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.

Heteroatom dopings and hierarchical pores of graphene for synergistic improvement of lithium–sulfur battery performance

2018 ◽  
Vol 5 (5) ◽  
pp. 1053-1061 ◽  
Author(s):  
Jiahui Li ◽  
Caining Xue ◽  
Baojuan Xi ◽  
Hongzhi Mao ◽  
Yitai Qian ◽  
...  
Keyword(s):  
Synergistic Effect ◽  
High Performance ◽  
Rate Capability ◽  
Carbon Matrix ◽  
Cycling Stability ◽  
Lithium Sulfur Battery ◽  
Hierarchical Pores ◽  
Lithium Sulfur Batteries ◽  
Sulfur Battery ◽  
Lithium Sulfur

Lithium–sulfur batteries: Both the cycling stability and rate capability are adequately enhanced due to the synergistic effect of heteroatom dopings and hierarchical pores of carbon matrix, guiding the design of advanced scaffolds towards high-performance lithium–sulfur batteries.

Super-aligned carbon nanotube/graphene hybrid materials as a framework for sulfur cathodes in high performance lithium sulfur batteries

2015 ◽  
Vol 3 (10) ◽  
pp. 5305-5312 ◽  
Author(s):  
Li Sun ◽  
Weibang Kong ◽  
Ying Jiang ◽  
Hengcai Wu ◽  
Kaili Jiang ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
High Performance ◽  
Composite Electrode ◽  
High Capacity ◽  
Rate Capability ◽  
Graphene Composite ◽  
Lithium Sulfur Batteries ◽  
Binder Free ◽  
Sulfur Cathodes ◽  
Lithium Sulfur

A binder-free sulfur–carbon nanotube/graphene composite electrode is fabricated by a scalable ultrasonication-assisted method, demonstrating high capacity, reversibility, and rate capability.

Atomic layer deposited TiO2on a nitrogen-doped graphene/sulfur electrode for high performance lithium–sulfur batteries

2016 ◽  
Vol 9 (4) ◽  
pp. 1495-1503 ◽  
Author(s):  
Mingpeng Yu ◽  
Junsheng Ma ◽  
Hongquan Song ◽  
Aiji Wang ◽  
Fuyang Tian ◽  
...  
Keyword(s):  
High Performance ◽  
Coulombic Efficiency ◽  
Rate Capability ◽  
Atomic Layer ◽  
Nitrogen Doped ◽  
Lithium Sulfur Batteries ◽  
Nitrogen Doped Graphene ◽  
Doped Graphene ◽  
Superior Cycling Stability ◽  
Lithium Sulfur

A nitrogen-doped graphene/sulfur composite was further modified with atomic layers of TiO2and used as the cathode of lithium–sulfur batteries, exhibiting superior cycling stability, good rate capability and high coulombic efficiency.

Sulfur vacancies in Co9S8-x/N-doped graphene enhancing electrochemical kinetics to high-performance lithium sulfur batteries

2021 ◽  
Author(s):  
Haojie Li ◽  
Yihua Song ◽  
Kai Xi ◽  
Wei Wang ◽  
Sheng Liu ◽  
...  
Keyword(s):  
Cathode Materials ◽  
High Performance ◽  
Catalytic Conversion ◽  
High Energy ◽  
Electrochemical Kinetics ◽  
Lithium Sulfur Batteries ◽  
Doped Graphene ◽  
Sulfur Battery ◽  
Areal Capacity ◽  
Lithium Sulfur

A sufficient areal capacity is necessary for achieving high-energy lithium sulfur battery, which requires high enough sulfur loading in cathode materials. Therefore, kinetically fast catalytic conversion of polysulfide intermediates is...

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