Electrostatic trapping of polysulfides enabled by imidazolium-based ionic polymers for high-energy-density lithium–sulfur batteries

2018 ◽  
Vol 6 (17) ◽  
pp. 7375-7381 ◽  
Author(s):  
Zhibin Cheng ◽  
Hui Pan ◽  
Zhubing Xiao ◽  
Dejian Chen ◽  
Xiaoju Li ◽  
...  
Keyword(s):  
Main Chain ◽  
High Energy ◽  
High Energy Density ◽  
Ionic Polymers ◽  
Shuttle Effect ◽  
Effective Suppression ◽  
Lithium Polysulfide ◽  
Lithium Sulfur Batteries ◽  
Sulfur Cathodes ◽  
Lithium Sulfur

A new lithium polysulfide (PS) trapping strategy based on electrostatic attraction between imidazolium groups and PSs has been demonstrated. Simple introduction of main-chain imidazolium-based ionic polymers into sulfur cathodes results in effective suppression of the PS shuttle effect, thus significantly improving cycling stability of lithium–sulfur batteries.

Fast Polysulfides Catalytic Conversion and Self-Repairing Ability for High Loading Lithium-Sulfur Batteries using a Permselective Coating Layer Modified Separator

Nanoscale ◽  
2021 ◽  
Author(s):  
Fanglei Zeng ◽  
Fang Wang ◽  
Ning Li ◽  
Ke Meng Song ◽  
Shi-Ye Chang ◽  
...  
Keyword(s):  
Energy Density ◽  
Coating Layer ◽  
High Energy ◽  
High Energy Density ◽  
High Loading ◽  
Battery System ◽  
Shuttle Effect ◽  
Lithium Sulfur Batteries ◽  
Lithium Sulfur ◽  
Modified Separator

Li-S battery is considered as one of the most promising battery system because of its large theoretical capacity and high energy density. However, the “shuttle effect” of soluble polysulfides and...

Cubic MnSe2 microcube enabling high-performance sulfur cathode for lithium-sulfur batteries

2021 ◽  
Author(s):  
Jian Bao ◽  
Xin-Yang Yue ◽  
Rui-Jie Luo ◽  
Yong-Ning Zhou
Keyword(s):  
Strong Interaction ◽  
High Performance ◽  
Sulfur Cathode ◽  
Shuttle Effect ◽  
Lithium Polysulfide ◽  
Lithium Sulfur Batteries ◽  
Sulfur Cathodes ◽  
Lithium Sulfur

Cubic MnSe2 microcubes are introduced into sulfur cathodes to prevent the shuttle effect of lithium polysulfide through binding with polysulfide via the strong interaction between Se and S, thus alleviate...

High Energy Density Lithium-Sulfur Batteries: Challenges of Thick Sulfur Cathodes

2015 ◽  
Vol 5 (16) ◽  
pp. 1402290 ◽  
Author(s):  
Dongping Lv ◽  
Jianming Zheng ◽  
Qiuyan Li ◽  
Xi Xie ◽  
Seth Ferrara ◽  
...  
Keyword(s):  
Energy Density ◽  
High Energy ◽  
High Energy Density ◽  
Lithium Sulfur Batteries ◽  
Sulfur Cathodes ◽  
Lithium Sulfur

scholarly journals Graphene-Based Nanomaterials as the Cathode for Lithium-Sulfur Batteries

Molecules ◽  
2021 ◽  
Vol 26 (9) ◽  
pp. 2507
Author(s):  
Jingkun Tian ◽  
Fei Xing ◽  
Qiqian Gao
Keyword(s):  
Energy Storage ◽  
Storage System ◽  
Chemical Properties ◽  
Clean Energy ◽  
High Energy ◽  
High Energy Density ◽  
Discharge Process ◽  
Lithium Sulfur Batteries ◽  
Sulfur Cathodes ◽  
Lithium Sulfur

The global energy crisis and environmental problems are becoming increasingly serious. It is now urgent to vigorously develop an efficient energy storage system. Lithium-sulfur batteries (LSBs) are considered to be one of the most promising candidates for next-generation energy storage systems due to their high energy density. Sulfur is abundant on Earth, low-cost, and environmentally friendly, which is consistent with the characteristics of new clean energy. Although LSBs possess numerous advantages, they still suffer from numerous problems such as the dissolution and diffusion of sulfur intermediate products during the discharge process, the expansion of the electrode volume, and so on, which severely limit their further development. Graphene is a two-dimensional crystal material with a single atomic layer thickness and honeycomb bonding structure formed by sp2 hybridization of carbon atoms. Since its discovery in 2004, graphene has attracted worldwide attention due to its excellent physical and chemical properties. Herein, this review summarizes the latest developments in graphene frameworks, heteroatom-modified graphene, and graphene composite frameworks in sulfur cathodes. Moreover, the challenges and future development of graphene-based sulfur cathodes are also discussed.

Uniform Li2S precipitation on N,O-codoped porous hollow carbon fibers for high-energy-density lithium–sulfur batteries with superior stability

2016 ◽  
Vol 52 (73) ◽  
pp. 10964-10967 ◽  
Author(s):  
Long Qie ◽  
Arumugam Manthiram
Keyword(s):  
Carbon Fibers ◽  
Active Material ◽  
Current Collector ◽  
High Energy ◽  
High Energy Density ◽  
Lithium Sulfur Batteries ◽  
Hollow Carbon ◽  
Sulfur Cathodes ◽  
Lithium Sulfur

Long-term cycling stability with high-loading sulfur cathodes has been achieved using N,O-codoped carbon hollow fibers as the current collector and Li2S6 as the starting active material.

Facile and scalable fabrication of high-energy-density sulfur cathodes for pragmatic lithium-sulfur batteries

2019 ◽  
Vol 422 ◽  
pp. 104-112 ◽  
Author(s):  
Min-Seop Kim ◽  
Mun Sek Kim ◽  
Vandung Do ◽  
Yongyao Xia ◽  
Woong Kim ◽  
...  
Keyword(s):  
Energy Density ◽  
High Energy ◽  
High Energy Density ◽  
Lithium Sulfur Batteries ◽  
Sulfur Cathodes ◽  
Lithium Sulfur

scholarly journals Amorphization-induced surface electronic states modulation of cobaltous oxide nanosheets for lithium-sulfur batteries

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Ruilong Li ◽  
Dewei Rao ◽  
Jianbin Zhou ◽  
Geng Wu ◽  
Guanzhong Wang ◽  
...  
Keyword(s):  
Rate Capability ◽  
Electronic States ◽  
High Energy ◽  
High Energy Density ◽  
Ligand Field ◽  
Shuttle Effect ◽  
High Energy Level ◽  
Long Term Stability ◽  
Lithium Sulfur Batteries ◽  
Lithium Sulfur

AbstractLithium-sulfur batteries show great potential to achieve high-energy-density storage, but their long-term stability is still limited due to the shuttle effect caused by the dissolution of polysulfides into electrolyte. Herein, we report a strategy of significantly improving the polysulfides adsorption capability of cobaltous oxide by amorphization-induced surface electronic states modulation. The amorphous cobaltous oxide nanosheets as the cathode additives for lithium-sulfur batteries demonstrates the rate capability and cycling stability with an initial capacity of 1248.2 mAh g-1 at 1 C and a substantial capacity retention of 1037.3 mAh g-1 after 500 cycles. X-ray absorption spectroscopy analysis reveal that the coordination structures and symmetry of ligand field around Co atoms of cobaltous oxide nanosheets are notably changed after amorphization. Moreover, DFT studies further indicate that amorphization-induced re-distribution of d orbital makes more electrons occupy high energy level, thereby resulting in a high binding energy with polysulfides for favorable adsorption.

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