Rational design of free-standing 3D porous MXene/rGO hybrid aerogels as polysulfide reservoirs for high-energy lithium–sulfur batteries

2019 ◽  
Vol 7 (11) ◽  
pp. 6507-6513 ◽  
Author(s):  
Jianjun Song ◽  
Xin Guo ◽  
Jinqiang Zhang ◽  
Yi Chen ◽  
Chaoyue Zhang ◽  
...  
Keyword(s):  
Rational Design ◽  
High Energy ◽  
Free Standing ◽  
Shuttle Effect ◽  
Lithium Sulfur Batteries ◽  
Overall Performance ◽  
Hybrid Aerogels ◽  
First Time ◽  
Lithium Sulfur ◽  
Hybrid Aerogel

A Ti3C2Tx MXene/rGO hybrid aerogel is applied for the first time as a free-standing polysulfide reservoir to inhibit the shuttle effect and improve the overall performance of Li–S 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...

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.

Porous hybrid aerogels with ultrahigh sulfur loading for lithium–sulfur batteries

2018 ◽  
Vol 6 (19) ◽  
pp. 9032-9040 ◽  
Author(s):  
Yibo He ◽  
Songyan Bai ◽  
Zhi Chang ◽  
Qi Li ◽  
Yu Qiao ◽  
...  
Keyword(s):  
High Performance ◽  
Electrode Materials ◽  
Lithium Sulfur Batteries ◽  
Hybrid Aerogels ◽  
Lithium Sulfur ◽  
Hybrid Aerogel

Porous hybrid aerogel electrode materials with ultrahigh sulfur-loading were designed and fabricated for high performance Li–S batteries.

Sulfur-infiltrated three-dimensional graphene-like material with hierarchical pores for highly stable lithium–sulfur batteries

2014 ◽  
Vol 2 (13) ◽  
pp. 4528-4533 ◽  
Author(s):  
Yunyong Li ◽  
Zesheng Li ◽  
Qinwei Zhang ◽  
Pei Kang Shen
Keyword(s):  
Rational Design ◽  
Discharge Rate ◽  
Three Dimensional ◽  
Rate Performance ◽  
3D Graphene ◽  
Design And Synthesis ◽  
Hierarchical Pores ◽  
Lithium Sulfur Batteries ◽  
First Time ◽  
Lithium Sulfur

A rational design and synthesis of sulphur–carbon nanocomposites by infiltrating into 3D graphene-like material with hierarchical pores has been achieved for the first time; the nanocomposite shows a highly stable capacity and reversible high charge/discharge rate performance.

scholarly journals Rational design of zwitterionic porous organic framework loading Co (II) ions to host sulfur and synergistically boost polysulfides redox kinetics for lithium sulfur batteries

2022 ◽  
Author(s):  
Miao Sun ◽  
Gaojie Yan ◽  
Haifeng Ji ◽  
Yi Feng ◽  
Xiaojie Zhang ◽  
...  
Keyword(s):  
Rational Design ◽  
Volume Changes ◽  
Shuttle Effect ◽  
Redox Kinetics ◽  
Lithium Sulfur Batteries ◽  
Kinetics Of ◽  
Porous Organic Framework ◽  
Lithium Sulfur ◽  
Organic Framework

In the development of lithium-sulfur batteries (LiSBs), the irreversible volume changes, annoying shuttle effect and slow conversion kinetics of lithium polysulfides (LiPSs) are main obstacles for further commercialization. Therefore, a...

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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