A Novel Strategy for the Selection of Polysulfide Adsorbents Toward High‐Performance Lithium‐Sulfur Batteries

2019 ◽  
pp. 1900393 ◽  
Author(s):  
Xiaonan Shang ◽  
Tianfeng Qin ◽  
Pengqian Guo ◽  
Kai Sun ◽  
Hao Su ◽  
...  
Keyword(s):  
High Performance ◽  
Lithium Sulfur Batteries ◽  
Novel Strategy ◽  
Lithium Sulfur ◽  
Selection Of

Inhibiting the shuttle effect in lithium–sulfur batteries using a layer-by-layer assembled ion-permselective separator

RSC Advances ◽  
2014 ◽  
Vol 4 (87) ◽  
pp. 46940-46946 ◽  
Author(s):  
Minsu Gu ◽  
Jukyoung Lee ◽  
Yongil Kim ◽  
Joon Soo Kim ◽  
Bo Yun Jang ◽  
...  
Keyword(s):  
High Performance ◽  
Layer By Layer ◽  
Shuttle Effect ◽  
Lithium Sulfur Batteries ◽  
Novel Strategy ◽  
Lithium Sulfur

A novel strategy for introducing ion-permselective properties in a conventional polyethylene (PE) separator to inhibit the shuttle effect of polysulfides in high-performance lithium–sulfur batteries is reported.

scholarly journals Confined Polysulfides in N-Doped 3D-CNTs Network for High Performance Lithium-Sulfur Batteries

Materials ◽  
2021 ◽  
Vol 14 (20) ◽  
pp. 6131
Author(s):  
Donghuang Wang ◽  
Aijun Zhou ◽  
Zhujun Yao ◽  
Xinhui Xia ◽  
Yongqi Zhang
Keyword(s):  
Discharge Capacity ◽  
High Performance ◽  
Synergetic Effect ◽  
Three Dimensional ◽  
Utilization Efficiency ◽  
Lithium Sulfur Batteries ◽  
3D Architecture ◽  
Novel Strategy ◽  
Physical And Chemical ◽  
Lithium Sulfur

Improving the utilization efficiency of active materials and suppressing the dissolution of lithium polysulfides into the electrolyte are very critical for development of high-performance lithium-sulfur batteries. Herein, a novel strategy is proposed to construct a three-dimensional (3D) N-doped carbon nanotubes (CNTs) networks to support lithium polysulfides (3D-NCNT-Li2S6) as a binder-free cathode for high-performance lithium-sulfur batteries. The 3D N-doped CNTs networks not only provide a conductive porous 3D architecture for facilitating fast ion and electron transport but also create void spaces and porous channels for accommodating active sulfur. In addition, lithium polysulfides can be effectively confined among the networks through the chemical bond between Li and N. Owing to the synergetic effect of the physical and chemical confinement for the polysulfides dissolution, the 3D-NCNT-Li2S6 cathodes exhibit enhanced charge capacity and cyclic stability with lower polarization and faster redox reaction kinetics. With an initial discharge capacity of 924.8 mAh g−1 at 1 C, the discharge capacity can still maintain 525.1 mAh g−1 after 200 cycles, which is better than that of its counterparts.

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...

Three-in-one cathode host based on Nb3O8/graphene superlattice heterostructures for high-performance Li–S batteries

2021 ◽  
Author(s):  
Chenhui WANG ◽  
Nobuyuki Sakai ◽  
Yasuo Ebina ◽  
Takayuki KIKUCHI ◽  
Monika Snowdon ◽  
...  
Keyword(s):  
Energy Storage ◽  
High Performance ◽  
Next Generation ◽  
Shuttle Effect ◽  
Lithium Sulfur Batteries ◽  
Graphene Superlattice ◽  
Lithium Sulfur

Lithium-sulfur batteries have high promise for application in next-generation energy storage. However, further advances have been hindered by various intractable challenges, particularly three notorious problems: the “shuttle effect”, sluggish kinetics...

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